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		<id>https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=3071%3A_Decay_Chain</id>
		<title>3071: Decay Chain - Revision history</title>
		<link rel="self" type="application/atom+xml" href="https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=3071%3A_Decay_Chain"/>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;action=history"/>
		<updated>2026-04-08T02:57:43Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
		<generator>MediaWiki 1.30.0</generator>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=373716&amp;oldid=prev</id>
		<title>BobcatInABox at 14:28, 19 April 2025</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=373716&amp;oldid=prev"/>
				<updated>2025-04-19T14:28:35Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 14:28, 19 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l10&quot; &gt;Line 10:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 10:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{incomplete|Created by an iPhone 6 that used to be an iPhone 13 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This comic is a play on nuclear {{w|decay chains}}, the series of radioactive disintegrations that the nuclei of unstable atoms undergo. Example diagrams of such nuclear decay chains can be seen {{w|Decay_chain#Thorium_series|here}}. This comic suggests that as iPhone model iterations get higher (and typically, though not entirely, larger and [https://www.plug.tech/blogs/news/how-much-does-iphone-weigh heavier]), they, similarly to heavier chemical elements, become unstable and susceptible to decay into lesser models. Some isotopes of atoms decay into other isotopes, releasing particles in the process. This process is generally dictated by the number of the positively charged protons in an atomic nucleus, which dictate its chemical identity, and the neutrons, which keep the protons in as stable a clump as possible. Particular isotopes, increasingly so for heavier atoms, are known to be subject to one or more modes of {{w|nuclear decay}} in order to attain a more stable and simpler form, including by several such steps. This comic humorously explores how it would work if iPhones decayed similarly. This is absurd, as iPhones are large objects that do not suddenly and drastically change form.{{Citation needed}} (Although, almost all matter on Earth, including iPhones, contain ''some'' atoms that are radioactive and exhibit nuclear decay, mixed with a non-radioactive majority.)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This comic is a play on nuclear {{w|decay chains}}, the series of radioactive disintegrations that the nuclei of unstable atoms undergo. Example diagrams of such nuclear decay chains can be seen {{w|Decay_chain#Thorium_series|here}}. This comic suggests that as iPhone model iterations get higher (and typically, though not entirely, larger and [https://www.plug.tech/blogs/news/how-much-does-iphone-weigh heavier]), they, similarly to heavier chemical elements, become unstable and susceptible to decay into lesser models. Some isotopes of atoms decay into other isotopes, releasing particles in the process. This process is generally dictated by the number of the positively charged protons in an atomic nucleus, which dictate its chemical identity, and the neutrons, which keep the protons in as stable a clump as possible. Particular isotopes, increasingly so for heavier atoms, are known to be subject to one or more modes of {{w|nuclear decay}} in order to attain a more stable and simpler form, including by several such steps. This comic humorously explores how it would work if iPhones decayed similarly. This is absurd, as iPhones are large objects that do not suddenly and drastically change form.{{Citation needed}} (Although, almost all matter on Earth, including iPhones, contain ''some'' atoms that are radioactive and exhibit nuclear decay, mixed with a non-radioactive majority.)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l26&quot; &gt;Line 26:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 25:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[A flowchart with arrows leading from a circle with the words &amp;quot;iPhone 16 Pro Max&amp;quot;, to circles with other iPhone names, eventually leading to a circle with the words &amp;quot;iPhone 7&amp;quot;. All of one iPhone number are on the same level (e.g. iPhone 16 Pro Max is on the same level as iPhone 16 Plus, and iPhone 15 Pro is on the same level as iPhone 15).]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[A flowchart with arrows leading from a circle with the words &amp;quot;iPhone 16 Pro Max&amp;quot;, to circles with other iPhone names, eventually leading to a circle with the words &amp;quot;iPhone 7&amp;quot;. All of one iPhone number are on the same level (e.g. iPhone 16 Pro Max is on the same level as iPhone 16 Plus, and iPhone 15 Pro is on the same level as iPhone 15).]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>BobcatInABox</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=373713&amp;oldid=prev</id>
		<title>BobcatInABox at 14:18, 19 April 2025</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=373713&amp;oldid=prev"/>
				<updated>2025-04-19T14:18:28Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 14:18, 19 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l28&quot; &gt;Line 28:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 28:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[A flowchart with arrows leading from a circle with the words &amp;quot;iPhone 16 Pro Max&amp;quot;, to circles with other iPhone names, eventually leading to a circle with the words &amp;quot;iPhone 7&amp;quot;]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[A flowchart with arrows leading from a circle with the words &amp;quot;iPhone 16 Pro Max&amp;quot;, to circles with other iPhone names, eventually leading to a circle with the words &amp;quot;iPhone 7&amp;quot;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. All of one iPhone number are on the same level (e.g. iPhone 16 Pro Max is on the same level as iPhone 16 Plus, and iPhone 15 Pro is on the same level as iPhone 15).&lt;/ins&gt;]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone 16 Pro Max alpha decays to iPhone 14 Pro Max.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone 14 Pro Max alpha decays to iPhone 12 Pro Max '''''OR''''' beta decays to iPhone 15 Pro.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone 12 Pro Max beta decays to iPhone 13 Pro.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone 15 Pro alpha decays to iPhone 13 Pro '''''OR''''' beta decays to iPhone 16 Plus.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone 13 Pro beta decays to iPhone 14 Plus.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone 16 Plus alpha decays to iPhone 14 Plus.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone 14 Plus beta decays to iPhone 15.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone 15 alpha decays to iPhone 13.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone 13 alpha decays to iPhone 11.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone 11 alpha decays to iPhone X.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone X alpha decays to iPhone 7.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;:iPhone 7 does not decay.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:[Caption below the panel:]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:[Caption below the panel:]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>BobcatInABox</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371309&amp;oldid=prev</id>
		<title>172.70.85.48: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371309&amp;oldid=prev"/>
				<updated>2025-04-04T16:08:59Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 16:08, 4 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot; &gt;Line 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by an iPhone 6 that used to be an iPhone 13 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by an iPhone 6 that used to be an iPhone 13 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This comic is a play on nuclear {{w|decay chains}}, the series of radioactive disintegrations that the nuclei of unstable atoms undergo. Example diagrams of such nuclear decay chains can be seen {{w|Decay_chain#Thorium_series|here}}. This comic suggests that as &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;iPhones &lt;/del&gt;model iterations get higher (and typically, though not entirely, larger and [https://www.plug.tech/blogs/news/how-much-does-iphone-weigh heavier]), they, similarly to heavier chemical elements, become unstable and susceptible to decay into lesser models. Some isotopes of atoms decay into other isotopes, releasing particles in the process. This process is generally dictated by the number of the positively charged protons in an atomic nucleus, which dictate its chemical identity, and the neutrons, which keep the protons in as stable a clump as possible. Particular isotopes, increasingly so for heavier atoms, are known to be subject to one or more modes of {{w|nuclear decay}} in order to attain a more stable and simpler form, including by several such steps. This comic humorously explores how &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;an iPhone &lt;/del&gt;would &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;decay &lt;/del&gt;if &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;decaying worked &lt;/del&gt;similarly&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;, which &lt;/del&gt;is absurd as iPhones are large objects that do not suddenly and drastically change form.{{Citation needed}} (Although, almost all matter on Earth, including iPhones, contain ''some'' atoms that are radioactive and exhibit nuclear decay, mixed with a non-radioactive majority.)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This comic is a play on nuclear {{w|decay chains}}, the series of radioactive disintegrations that the nuclei of unstable atoms undergo. Example diagrams of such nuclear decay chains can be seen {{w|Decay_chain#Thorium_series|here}}. This comic suggests that as &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;iPhone &lt;/ins&gt;model iterations get higher (and typically, though not entirely, larger and [https://www.plug.tech/blogs/news/how-much-does-iphone-weigh heavier]), they, similarly to heavier chemical elements, become unstable and susceptible to decay into lesser models. Some isotopes of atoms decay into other isotopes, releasing particles in the process. This process is generally dictated by the number of the positively charged protons in an atomic nucleus, which dictate its chemical identity, and the neutrons, which keep the protons in as stable a clump as possible. Particular isotopes, increasingly so for heavier atoms, are known to be subject to one or more modes of {{w|nuclear decay}} in order to attain a more stable and simpler form, including by several such steps. This comic humorously explores how &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;it &lt;/ins&gt;would &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;work &lt;/ins&gt;if &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;iPhones decayed &lt;/ins&gt;similarly&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. This &lt;/ins&gt;is absurd&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/ins&gt;as iPhones are large objects that do not suddenly and drastically change form.{{Citation needed}} (Although, almost all matter on Earth, including iPhones, contain ''some'' atoms that are radioactive and exhibit nuclear decay, mixed with a non-radioactive majority.)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>172.70.85.48</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371292&amp;oldid=prev</id>
		<title>162.158.216.201: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371292&amp;oldid=prev"/>
				<updated>2025-04-04T08:42:54Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 08:42, 4 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l15&quot; &gt;Line 15:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 15:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|alpha decay|alpha (''α'') decay}} (vertically downwards, in the diagram) the model number changes from a higher one to a model two steps lower, except for the step involving the iPhone X which apparently exists instead of a &amp;quot;9&amp;quot; model. This is equivalent to the change in {{w|atomic number}} when two protons, together with two neutrons, leave the nucleus in the form of a helium ion (He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;), known as an alpha particle. The atomic number of such atoms reduces by two and the {{w|mass number}} reduces by four (that held by the departing He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;). No evidence is given as to how the respective masses of the phones ''actually'' changes in this analogy.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|alpha decay|alpha (''α'') decay}} (vertically downwards, in the diagram) the model number changes from a higher one to a model two steps lower, except for the step involving the iPhone X which apparently exists instead of a &amp;quot;9&amp;quot; model. This is equivalent to the change in {{w|atomic number}} when two protons, together with two neutrons, leave the nucleus in the form of a helium ion (He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;), known as an alpha particle. The atomic number of such atoms reduces by two and the {{w|mass number}} reduces by four (that held by the departing He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;). No evidence is given as to how the respective masses of the phones ''actually'' changes in this analogy.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;https://en.wikipedia.org/wiki/&lt;/del&gt;Beta_decay|beta minus (''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt;) decay}} (a rightward-and-upward step) the iPhones undergo a version upgrade, but also the removal of a brand name modifier (usually denoting additional features included within the same model range), leaving them closer to that new range's most basic model. In elements, the effective conversion of a neutron into a proton and a free electron raises the atomic number by one by transforming a neutral particle to a positive one via emission of a small negatively charged {{w|beta particle}} (an electron), leaving the mass only slightly decreased. The decay step from the iPhone 13 Pro to the iPhone 14 Plus, which is missing a symbol, is clearly one of the ''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt; decay steps.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|Beta_decay&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;#β−_decay&lt;/ins&gt;|beta minus (''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt;) decay}} (a rightward-and-upward step) the iPhones undergo a version upgrade, but also the removal of a brand name modifier (usually denoting additional features included within the same model range), leaving them closer to that new range's most basic model. In elements, the effective conversion of a neutron into a proton and a free electron raises the atomic number by one by transforming a neutral particle to a positive one via emission of a small negatively charged {{w|beta particle}} (an electron), leaving the mass only slightly decreased. The decay step from the iPhone 13 Pro to the iPhone 14 Plus, which is missing a symbol, is clearly one of the ''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt; decay steps.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The specific reason for the decay chain stopping at iPhone '''7''' is unknown. A possible reason for this is because lithium, which is often used in phone batteries, has the stable isotope lithium-7. &amp;quot;Stable&amp;quot; may refer to the usability of the device in terms of whether or not it still receives security updates, but the iPhone 6s also received the [https://support.apple.com/en-us/100100 latest security patch] as of the time this comic was published. Apple has [https://www.bbc.com/news/technology-67911517 paid significant compensation] regarding one of their business practices of intentional obsolescence. Alternatively, [[Randall]] may be suggesting that models up to iPhone 7 were highly reliable, but that models beyond that have become ever more problematic - this would mirror the case of radioactive decay, where it is the higher numbered elements that are unstable.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The specific reason for the decay chain stopping at iPhone '''7''' is unknown. A possible reason for this is because lithium, which is often used in phone batteries, has the stable isotope lithium-7. &amp;quot;Stable&amp;quot; may refer to the usability of the device in terms of whether or not it still receives security updates, but the iPhone 6s also received the [https://support.apple.com/en-us/100100 latest security patch] as of the time this comic was published. Apple has [https://www.bbc.com/news/technology-67911517 paid significant compensation] regarding one of their business practices of intentional obsolescence. Alternatively, [[Randall]] may be suggesting that models up to iPhone 7 were highly reliable, but that models beyond that have become ever more problematic - this would mirror the case of radioactive decay, where it is the higher numbered elements that are unstable.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>162.158.216.201</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371291&amp;oldid=prev</id>
		<title>162.158.216.200: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371291&amp;oldid=prev"/>
				<updated>2025-04-04T08:41:59Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 08:41, 4 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l15&quot; &gt;Line 15:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 15:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|alpha decay|alpha (''α'') decay}} (vertically downwards, in the diagram) the model number changes from a higher one to a model two steps lower, except for the step involving the iPhone X which apparently exists instead of a &amp;quot;9&amp;quot; model. This is equivalent to the change in {{w|atomic number}} when two protons, together with two neutrons, leave the nucleus in the form of a helium ion (He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;), known as an alpha particle. The atomic number of such atoms reduces by two and the {{w|mass number}} reduces by four (that held by the departing He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;). No evidence is given as to how the respective masses of the phones ''actually'' changes in this analogy.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|alpha decay|alpha (''α'') decay}} (vertically downwards, in the diagram) the model number changes from a higher one to a model two steps lower, except for the step involving the iPhone X which apparently exists instead of a &amp;quot;9&amp;quot; model. This is equivalent to the change in {{w|atomic number}} when two protons, together with two neutrons, leave the nucleus in the form of a helium ion (He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;), known as an alpha particle. The atomic number of such atoms reduces by two and the {{w|mass number}} reduces by four (that held by the departing He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;). No evidence is given as to how the respective masses of the phones ''actually'' changes in this analogy.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|https://en.wikipedia.org/wiki/Beta_decay&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;#%c3%9f−_decay&lt;/del&gt;|beta minus (''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt;) decay}} (a rightward-and-upward step) the iPhones undergo a version upgrade, but also the removal of a brand name modifier (usually denoting additional features included within the same model range), leaving them closer to that new range's most basic model. In elements, the effective conversion of a neutron into a proton and a free electron raises the atomic number by one by transforming a neutral particle to a positive one via emission of a small negatively charged {{w|beta particle}} (an electron), leaving the mass only slightly decreased. The decay step from the iPhone 13 Pro to the iPhone 14 Plus, which is missing a symbol, is clearly one of the ''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt; decay steps.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|https://en.wikipedia.org/wiki/Beta_decay|beta minus (''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt;) decay}} (a rightward-and-upward step) the iPhones undergo a version upgrade, but also the removal of a brand name modifier (usually denoting additional features included within the same model range), leaving them closer to that new range's most basic model. In elements, the effective conversion of a neutron into a proton and a free electron raises the atomic number by one by transforming a neutral particle to a positive one via emission of a small negatively charged {{w|beta particle}} (an electron), leaving the mass only slightly decreased. The decay step from the iPhone 13 Pro to the iPhone 14 Plus, which is missing a symbol, is clearly one of the ''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt; decay steps.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The specific reason for the decay chain stopping at iPhone '''7''' is unknown. A possible reason for this is because lithium, which is often used in phone batteries, has the stable isotope lithium-7. &amp;quot;Stable&amp;quot; may refer to the usability of the device in terms of whether or not it still receives security updates, but the iPhone 6s also received the [https://support.apple.com/en-us/100100 latest security patch] as of the time this comic was published. Apple has [https://www.bbc.com/news/technology-67911517 paid significant compensation] regarding one of their business practices of intentional obsolescence. Alternatively, [[Randall]] may be suggesting that models up to iPhone 7 were highly reliable, but that models beyond that have become ever more problematic - this would mirror the case of radioactive decay, where it is the higher numbered elements that are unstable.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The specific reason for the decay chain stopping at iPhone '''7''' is unknown. A possible reason for this is because lithium, which is often used in phone batteries, has the stable isotope lithium-7. &amp;quot;Stable&amp;quot; may refer to the usability of the device in terms of whether or not it still receives security updates, but the iPhone 6s also received the [https://support.apple.com/en-us/100100 latest security patch] as of the time this comic was published. Apple has [https://www.bbc.com/news/technology-67911517 paid significant compensation] regarding one of their business practices of intentional obsolescence. Alternatively, [[Randall]] may be suggesting that models up to iPhone 7 were highly reliable, but that models beyond that have become ever more problematic - this would mirror the case of radioactive decay, where it is the higher numbered elements that are unstable.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>162.158.216.200</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371290&amp;oldid=prev</id>
		<title>162.158.216.201: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371290&amp;oldid=prev"/>
				<updated>2025-04-04T08:41:04Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 08:41, 4 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l15&quot; &gt;Line 15:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 15:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|alpha decay|alpha (''α'') decay}} (vertically downwards, in the diagram) the model number changes from a higher one to a model two steps lower, except for the step involving the iPhone X which apparently exists instead of a &amp;quot;9&amp;quot; model. This is equivalent to the change in {{w|atomic number}} when two protons, together with two neutrons, leave the nucleus in the form of a helium ion (He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;), known as an alpha particle. The atomic number of such atoms reduces by two and the {{w|mass number}} reduces by four (that held by the departing He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;). No evidence is given as to how the respective masses of the phones ''actually'' changes in this analogy.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|alpha decay|alpha (''α'') decay}} (vertically downwards, in the diagram) the model number changes from a higher one to a model two steps lower, except for the step involving the iPhone X which apparently exists instead of a &amp;quot;9&amp;quot; model. This is equivalent to the change in {{w|atomic number}} when two protons, together with two neutrons, leave the nucleus in the form of a helium ion (He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;), known as an alpha particle. The atomic number of such atoms reduces by two and the {{w|mass number}} reduces by four (that held by the departing He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;). No evidence is given as to how the respective masses of the phones ''actually'' changes in this analogy.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|https://en.wikipedia.org/wiki/Beta_decay#&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;β−_decay&lt;/del&gt;|beta minus (''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt;) decay}} (a rightward-and-upward step) the iPhones undergo a version upgrade, but also the removal of a brand name modifier (usually denoting additional features included within the same model range), leaving them closer to that new range's most basic model. In elements, the effective conversion of a neutron into a proton and a free electron raises the atomic number by one by transforming a neutral particle to a positive one via emission of a small negatively charged {{w|beta particle}} (an electron), leaving the mass only slightly decreased. The decay step from the iPhone 13 Pro to the iPhone 14 Plus, which is missing a symbol, is clearly one of the ''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt; decay steps.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|https://en.wikipedia.org/wiki/Beta_decay#&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;%c3%9f−_decay&lt;/ins&gt;|beta minus (''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt;) decay}} (a rightward-and-upward step) the iPhones undergo a version upgrade, but also the removal of a brand name modifier (usually denoting additional features included within the same model range), leaving them closer to that new range's most basic model. In elements, the effective conversion of a neutron into a proton and a free electron raises the atomic number by one by transforming a neutral particle to a positive one via emission of a small negatively charged {{w|beta particle}} (an electron), leaving the mass only slightly decreased. The decay step from the iPhone 13 Pro to the iPhone 14 Plus, which is missing a symbol, is clearly one of the ''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt; decay steps.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The specific reason for the decay chain stopping at iPhone '''7''' is unknown. A possible reason for this is because lithium, which is often used in phone batteries, has the stable isotope lithium-7. &amp;quot;Stable&amp;quot; may refer to the usability of the device in terms of whether or not it still receives security updates, but the iPhone 6s also received the [https://support.apple.com/en-us/100100 latest security patch] as of the time this comic was published. Apple has [https://www.bbc.com/news/technology-67911517 paid significant compensation] regarding one of their business practices of intentional obsolescence. Alternatively, [[Randall]] may be suggesting that models up to iPhone 7 were highly reliable, but that models beyond that have become ever more problematic - this would mirror the case of radioactive decay, where it is the higher numbered elements that are unstable.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The specific reason for the decay chain stopping at iPhone '''7''' is unknown. A possible reason for this is because lithium, which is often used in phone batteries, has the stable isotope lithium-7. &amp;quot;Stable&amp;quot; may refer to the usability of the device in terms of whether or not it still receives security updates, but the iPhone 6s also received the [https://support.apple.com/en-us/100100 latest security patch] as of the time this comic was published. Apple has [https://www.bbc.com/news/technology-67911517 paid significant compensation] regarding one of their business practices of intentional obsolescence. Alternatively, [[Randall]] may be suggesting that models up to iPhone 7 were highly reliable, but that models beyond that have become ever more problematic - this would mirror the case of radioactive decay, where it is the higher numbered elements that are unstable.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>162.158.216.201</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371289&amp;oldid=prev</id>
		<title>162.158.216.200: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371289&amp;oldid=prev"/>
				<updated>2025-04-04T08:39:34Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 08:39, 4 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l15&quot; &gt;Line 15:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 15:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|alpha decay|alpha (''α'') decay}} (vertically downwards, in the diagram) the model number changes from a higher one to a model two steps lower, except for the step involving the iPhone X which apparently exists instead of a &amp;quot;9&amp;quot; model. This is equivalent to the change in {{w|atomic number}} when two protons, together with two neutrons, leave the nucleus in the form of a helium ion (He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;), known as an alpha particle. The atomic number of such atoms reduces by two and the {{w|mass number}} reduces by four (that held by the departing He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;). No evidence is given as to how the respective masses of the phones ''actually'' changes in this analogy.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|alpha decay|alpha (''α'') decay}} (vertically downwards, in the diagram) the model number changes from a higher one to a model two steps lower, except for the step involving the iPhone X which apparently exists instead of a &amp;quot;9&amp;quot; model. This is equivalent to the change in {{w|atomic number}} when two protons, together with two neutrons, leave the nucleus in the form of a helium ion (He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;), known as an alpha particle. The atomic number of such atoms reduces by two and the {{w|mass number}} reduces by four (that held by the departing He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;). No evidence is given as to how the respective masses of the phones ''actually'' changes in this analogy.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|https://en.wikipedia.org/wiki/Beta_decay#&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;%CE%B2%E2%88%92_decay&lt;/del&gt;|beta minus (''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt;) decay}} (a rightward-and-upward step) the iPhones undergo a version upgrade, but also the removal of a brand name modifier (usually denoting additional features included within the same model range), leaving them closer to that new range's most basic model. In elements, the effective conversion of a neutron into a proton and a free electron raises the atomic number by one by transforming a neutral particle to a positive one via emission of a small negatively charged {{w|beta particle}} (an electron), leaving the mass only slightly decreased. The decay step from the iPhone 13 Pro to the iPhone 14 Plus, which is missing a symbol, is clearly one of the ''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt; decay steps.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|https://en.wikipedia.org/wiki/Beta_decay#&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;β−_decay&lt;/ins&gt;|beta minus (''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt;) decay}} (a rightward-and-upward step) the iPhones undergo a version upgrade, but also the removal of a brand name modifier (usually denoting additional features included within the same model range), leaving them closer to that new range's most basic model. In elements, the effective conversion of a neutron into a proton and a free electron raises the atomic number by one by transforming a neutral particle to a positive one via emission of a small negatively charged {{w|beta particle}} (an electron), leaving the mass only slightly decreased. The decay step from the iPhone 13 Pro to the iPhone 14 Plus, which is missing a symbol, is clearly one of the ''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt; decay steps.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The specific reason for the decay chain stopping at iPhone '''7''' is unknown. A possible reason for this is because lithium, which is often used in phone batteries, has the stable isotope lithium-7. &amp;quot;Stable&amp;quot; may refer to the usability of the device in terms of whether or not it still receives security updates, but the iPhone 6s also received the [https://support.apple.com/en-us/100100 latest security patch] as of the time this comic was published. Apple has [https://www.bbc.com/news/technology-67911517 paid significant compensation] regarding one of their business practices of intentional obsolescence. Alternatively, [[Randall]] may be suggesting that models up to iPhone 7 were highly reliable, but that models beyond that have become ever more problematic - this would mirror the case of radioactive decay, where it is the higher numbered elements that are unstable.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The specific reason for the decay chain stopping at iPhone '''7''' is unknown. A possible reason for this is because lithium, which is often used in phone batteries, has the stable isotope lithium-7. &amp;quot;Stable&amp;quot; may refer to the usability of the device in terms of whether or not it still receives security updates, but the iPhone 6s also received the [https://support.apple.com/en-us/100100 latest security patch] as of the time this comic was published. Apple has [https://www.bbc.com/news/technology-67911517 paid significant compensation] regarding one of their business practices of intentional obsolescence. Alternatively, [[Randall]] may be suggesting that models up to iPhone 7 were highly reliable, but that models beyond that have become ever more problematic - this would mirror the case of radioactive decay, where it is the higher numbered elements that are unstable.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>162.158.216.200</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371288&amp;oldid=prev</id>
		<title>172.70.90.4: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371288&amp;oldid=prev"/>
				<updated>2025-04-04T08:38:40Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 08:38, 4 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l15&quot; &gt;Line 15:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 15:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|alpha decay|alpha (''α'') decay}} (vertically downwards, in the diagram) the model number changes from a higher one to a model two steps lower, except for the step involving the iPhone X which apparently exists instead of a &amp;quot;9&amp;quot; model. This is equivalent to the change in {{w|atomic number}} when two protons, together with two neutrons, leave the nucleus in the form of a helium ion (He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;), known as an alpha particle. The atomic number of such atoms reduces by two and the {{w|mass number}} reduces by four (that held by the departing He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;). No evidence is given as to how the respective masses of the phones ''actually'' changes in this analogy.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In {{w|alpha decay|alpha (''α'') decay}} (vertically downwards, in the diagram) the model number changes from a higher one to a model two steps lower, except for the step involving the iPhone X which apparently exists instead of a &amp;quot;9&amp;quot; model. This is equivalent to the change in {{w|atomic number}} when two protons, together with two neutrons, leave the nucleus in the form of a helium ion (He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;), known as an alpha particle. The atomic number of such atoms reduces by two and the {{w|mass number}} reduces by four (that held by the departing He&amp;lt;sup&amp;gt;2+&amp;lt;/sup&amp;gt;). No evidence is given as to how the respective masses of the phones ''actually'' changes in this analogy.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In beta minus (''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt;) decay (a rightward-and-upward step) the iPhones undergo a version upgrade, but also the removal of a brand name modifier (usually denoting additional features included within the same model range), leaving them closer to that new range's most basic model. In elements, the effective conversion of a neutron into a proton and a free electron raises the atomic number by one by transforming a neutral particle to a positive one via emission of a small negatively charged {{w|beta particle}} (an electron), leaving the mass only slightly decreased. The decay step from the iPhone 13 Pro to the iPhone 14 Plus, which is missing a symbol, is clearly one of the ''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt; decay steps.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* In &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;{{w|https://en.wikipedia.org/wiki/Beta_decay#%CE%B2%E2%88%92_decay|&lt;/ins&gt;beta minus (''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt;) decay&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;}} &lt;/ins&gt;(a rightward-and-upward step) the iPhones undergo a version upgrade, but also the removal of a brand name modifier (usually denoting additional features included within the same model range), leaving them closer to that new range's most basic model. In elements, the effective conversion of a neutron into a proton and a free electron raises the atomic number by one by transforming a neutral particle to a positive one via emission of a small negatively charged {{w|beta particle}} (an electron), leaving the mass only slightly decreased. The decay step from the iPhone 13 Pro to the iPhone 14 Plus, which is missing a symbol, is clearly one of the ''β''&amp;lt;sup&amp;gt;-&amp;lt;/sup&amp;gt; decay steps.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The specific reason for the decay chain stopping at iPhone '''7''' is unknown. A possible reason for this is because lithium, which is often used in phone batteries, has the stable isotope lithium-7. &amp;quot;Stable&amp;quot; may refer to the usability of the device in terms of whether or not it still receives security updates, but the iPhone 6s also received the [https://support.apple.com/en-us/100100 latest security patch] as of the time this comic was published. Apple has [https://www.bbc.com/news/technology-67911517 paid significant compensation] regarding one of their business practices of intentional obsolescence. Alternatively, [[Randall]] may be suggesting that models up to iPhone 7 were highly reliable, but that models beyond that have become ever more problematic - this would mirror the case of radioactive decay, where it is the higher numbered elements that are unstable.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The specific reason for the decay chain stopping at iPhone '''7''' is unknown. A possible reason for this is because lithium, which is often used in phone batteries, has the stable isotope lithium-7. &amp;quot;Stable&amp;quot; may refer to the usability of the device in terms of whether or not it still receives security updates, but the iPhone 6s also received the [https://support.apple.com/en-us/100100 latest security patch] as of the time this comic was published. Apple has [https://www.bbc.com/news/technology-67911517 paid significant compensation] regarding one of their business practices of intentional obsolescence. Alternatively, [[Randall]] may be suggesting that models up to iPhone 7 were highly reliable, but that models beyond that have become ever more problematic - this would mirror the case of radioactive decay, where it is the higher numbered elements that are unstable.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>172.70.90.4</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371287&amp;oldid=prev</id>
		<title>162.158.216.41: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371287&amp;oldid=prev"/>
				<updated>2025-04-04T08:37:02Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 08:37, 4 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot; &gt;Line 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by an iPhone 6 that used to be an iPhone 13 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by an iPhone 6 that used to be an iPhone 13 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This comic is a play on nuclear {{w|decay chains}}, the series of radioactive disintegrations that the nuclei of unstable atoms undergo. Example diagrams of such nuclear decay chains can be seen {{w|Decay_chain#Thorium_series|here}}. This comic suggests that as iPhones model iterations get higher (and typically, though not entirely, larger and [https://www.plug.tech/blogs/news/how-much-does-iphone-weigh heavier], they, similarly to heavier chemical elements, become unstable and susceptible to decay into lesser models. Some isotopes of atoms decay into other isotopes, releasing particles in the process. This process is generally dictated by the number of the positively charged protons in an atomic nucleus, which dictate its chemical identity, and the neutrons, which keep the protons in as stable a clump as possible. Particular isotopes, increasingly so for heavier atoms, are known to be subject to one or more modes of {{w|nuclear decay}} in order to attain a more stable and simpler form, including by several such steps. This comic humorously explores how an iPhone would decay if decaying worked similarly, which is absurd as iPhones are large objects that do not suddenly and drastically change form.{{Citation needed}} (Although, almost all matter on Earth, including iPhones, contain ''some'' atoms that are radioactive and exhibit nuclear decay, mixed with a non-radioactive majority.)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This comic is a play on nuclear {{w|decay chains}}, the series of radioactive disintegrations that the nuclei of unstable atoms undergo. Example diagrams of such nuclear decay chains can be seen {{w|Decay_chain#Thorium_series|here}}. This comic suggests that as iPhones model iterations get higher (and typically, though not entirely, larger and [https://www.plug.tech/blogs/news/how-much-does-iphone-weigh heavier]&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;)&lt;/ins&gt;, they, similarly to heavier chemical elements, become unstable and susceptible to decay into lesser models. Some isotopes of atoms decay into other isotopes, releasing particles in the process. This process is generally dictated by the number of the positively charged protons in an atomic nucleus, which dictate its chemical identity, and the neutrons, which keep the protons in as stable a clump as possible. Particular isotopes, increasingly so for heavier atoms, are known to be subject to one or more modes of {{w|nuclear decay}} in order to attain a more stable and simpler form, including by several such steps. This comic humorously explores how an iPhone would decay if decaying worked similarly, which is absurd as iPhones are large objects that do not suddenly and drastically change form.{{Citation needed}} (Although, almost all matter on Earth, including iPhones, contain ''some'' atoms that are radioactive and exhibit nuclear decay, mixed with a non-radioactive majority.)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>162.158.216.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371286&amp;oldid=prev</id>
		<title>162.158.216.158: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3071:_Decay_Chain&amp;diff=371286&amp;oldid=prev"/>
				<updated>2025-04-04T08:36:39Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 08:36, 4 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot; &gt;Line 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by an iPhone 6 that used to be an iPhone 13 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by an iPhone 6 that used to be an iPhone 13 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This comic is a play on nuclear {{w|decay chains}}, the series of radioactive disintegrations that the nuclei of unstable atoms undergo. Example diagrams of such nuclear decay chains can be seen {{w|Decay_chain#Thorium_series|here}}. This comic suggests that as iPhones model iterations get higher, they, similarly to heavier chemical elements, become unstable and susceptible to decay into lesser models. Some isotopes of atoms decay into other isotopes, releasing particles in the process. This process is generally dictated by the number of the positively charged protons in an atomic nucleus, which dictate its chemical identity, and the neutrons, which keep the protons in as stable a clump as possible. Particular isotopes, increasingly so for heavier atoms, are known to be subject to one or more modes of {{w|nuclear decay}} in order to attain a more stable and simpler form, including by several such steps. This comic humorously explores how an iPhone would decay if decaying worked similarly, which is absurd as iPhones are large objects that do not suddenly and drastically change form.{{Citation needed}} (Although, almost all matter on Earth, including iPhones, contain ''some'' atoms that are radioactive and exhibit nuclear decay, mixed with a non-radioactive majority.)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This comic is a play on nuclear {{w|decay chains}}, the series of radioactive disintegrations that the nuclei of unstable atoms undergo. Example diagrams of such nuclear decay chains can be seen {{w|Decay_chain#Thorium_series|here}}. This comic suggests that as iPhones model iterations get higher &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;(and typically, though not entirely, larger and [https://www.plug.tech/blogs/news/how-much-does-iphone-weigh heavier]&lt;/ins&gt;, they, similarly to heavier chemical elements, become unstable and susceptible to decay into lesser models. Some isotopes of atoms decay into other isotopes, releasing particles in the process. This process is generally dictated by the number of the positively charged protons in an atomic nucleus, which dictate its chemical identity, and the neutrons, which keep the protons in as stable a clump as possible. Particular isotopes, increasingly so for heavier atoms, are known to be subject to one or more modes of {{w|nuclear decay}} in order to attain a more stable and simpler form, including by several such steps. This comic humorously explores how an iPhone would decay if decaying worked similarly, which is absurd as iPhones are large objects that do not suddenly and drastically change form.{{Citation needed}} (Although, almost all matter on Earth, including iPhones, contain ''some'' atoms that are radioactive and exhibit nuclear decay, mixed with a non-radioactive majority.)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The iPhones in the comic undergo two different types of decay, which mirror two types of nuclear decay:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>162.158.216.158</name></author>	</entry>

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