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		<id>https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=172.68.35.119</id>
		<title>explain xkcd - User contributions [en]</title>
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		<updated>2026-04-16T06:14:56Z</updated>
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	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1824:_Identification_Chart&amp;diff=372928</id>
		<title>1824: Identification Chart</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1824:_Identification_Chart&amp;diff=372928"/>
				<updated>2025-04-14T16:35:43Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.35.119: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1824&lt;br /&gt;
| date      = April 14, 2017&lt;br /&gt;
| title     = Identification Chart&lt;br /&gt;
| image     = identification_chart.png&lt;br /&gt;
| titletext = Be careful-it's breeding season, and some of these can be *extremely* defensive of their nests.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
Some aircraft are named after creatures of flight, including {{w|bird of prey|birds of prey}}, other birds, and insects. This comic spoofs an &amp;quot;identification guide&amp;quot; of bird silhouettes, each with the {{w|fuselage}} of an aircraft and the wings of the flying animal from which the aircraft gets its name. All are birds with the exception of the {{w|hornet|hornet}} which is an insect, see the [[#Table|table]] below for individual explanations. This idea of having feathered wings on a plane is absurd, as bird wings (for birds that can fly) are made to support the lightweight structure of a bird. Supporting the metal parts of a plane along with its human pilot would be impossible.{{Citation needed}}&lt;br /&gt;
&lt;br /&gt;
General military training often includes aircraft identification. {{w|Aircraft_recognition|Silhouette charts}} are given to ground observers for memorization and reference so that friend or foe can be determined in the field. Conversely, many bird watching books will carry pictures of avian silhouettes from below, as often key details like tail and wing shape are the easiest way to determine the species of a high soaring bird, especially birds of prey. (Two comics later [[Cueball]] is out birdwatching with his friend in [[1826: Birdwatching]] and could need such a chart, if he could spot any birds that is. A hawk, that is actually a drone, was spotted in [[1910: Sky Spotters]].). The pseudo-confusion between birds and planes here could be a reference to the &amp;quot;It's a bird! It's a plane! It's Superman&amp;quot; quote often used in, naturally, {{w|Superman}}-related entertainment. A similar joke was used in [[1792: Bird/Plane/Superman]]. The comic highlights not only the various designs of aircraft tails, but also bird wings. Some wings are highly adapted for soaring (eagle), speed (falcon), as well as rapid acceleration and short flights (blackbird).&lt;br /&gt;
&lt;br /&gt;
The title text is juxtaposing military air bases with breeding nests of the animals, both of which might earn a hostile response to approach at the wrong time, but in wildly different measure. Encroaching on breeding territory of some of the birds being referenced may result in getting dived at or chased, so the comparison invites the reader to imagine what might happen if the analogous creatures in the comic were defending their nest with aircraft ordnance. And if the birds were armed, with the missiles normally found on a military aircraft then imagine what would happen... This is also the second comic to refer to the military in less than two months, the first being [[1803: Location Reviews]] reviewing a Nuclear Launch Facility.&lt;br /&gt;
&lt;br /&gt;
The idea of a bird with plane engines was first used in [[1729: Migrating Geese]], which also shows birds in silhouette. The third last bird in the right arm of the V-formation has twin engines.&lt;br /&gt;
&lt;br /&gt;
===Table===&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
!Animal&lt;br /&gt;
! style=&amp;quot;width: 8em&amp;quot; | Plane&lt;br /&gt;
!Description&lt;br /&gt;
|-&lt;br /&gt;
|{{w|Osprey|Osprey}}&lt;br /&gt;
|{{w|Bell_Boeing_V-22_Osprey|V-22 Osprey}}&lt;br /&gt;
|The osprey (Pandion haliaetus) is a raptor with distinctive white and brown coloring. It's also sometimes referred to as a sea hawk or fish eagle due to its virtually all fish diet.&lt;br /&gt;
The V-22 Osprey is a tilt-rotor aircraft that has been in development since the 1980s, and was introduced to the U.S. Armed Forces in 2007. It's a troop carrier aircraft that combines the vertical take-off ability of a helicopter with the high cruising speed of an airplane. (''{{w|Bell Helicopter}}'' and {{w|Boeing Rotorcraft Systems|''Boeing''}})&amp;lt;!--Is this a style violation to pipe Boeing Rotorcraft as plain &amp;quot;Boeing&amp;quot;?--&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|{{w|Hornet|Hornet}}&lt;br /&gt;
|{{w|McDonnell_Douglas_F/A-18_Hornet|F/A-18 Hornet}}&lt;br /&gt;
|Hornets are a type of wasp of the genera vespa or provespa. They're known to be highly territorial and aggressive.&lt;br /&gt;
The F-18 Hornet is a fighter developed for the Navy in the 1970s. It's been deployed by air forces around the world in both air-to-air and air-to-ground roles, and is flown by the US Navy demonstration team, the Blue Angels. The airplane is still being produced in an updated and larger version, the {{w|F/A-18E/F Super Hornet}}. (''{{w|McDonnell Douglas}}'')&lt;br /&gt;
|-&lt;br /&gt;
|{{w|Falcon|Falcon}}&lt;br /&gt;
|{{w|General Dynamics F-16 Fighting Falcon}}&lt;br /&gt;
|A falcon is a bird of prey known for its tapered wings that allow for high speed flight and high maneuverability.&lt;br /&gt;
The F-16 Fighting Falcon is a light single-engine fighter. It's flown by the USAF demonstration team, the Thunderbirds. (''{{w|General Dynamics}}'')&lt;br /&gt;
|-&lt;br /&gt;
|{{w|Harrier (bird)|Harrier}}&lt;br /&gt;
|{{w|Harrier_Jump_Jet|AV-8B Harrier}}&lt;br /&gt;
|A harrier is a hawk that hunts by flying low over open ground.&lt;br /&gt;
The first operational {{w|STOL}}/{{w|VTOL}} fighter. They are known for their use in the {{w|Falklands War}} (1982), where they operated from converted cargo ships as well as aircraft carriers. (''{{w|Hawker Siddeley}}'')&lt;br /&gt;
|-&lt;br /&gt;
|{{w|Eagle|Eagle}}&lt;br /&gt;
|{{w|McDonnell_Douglas_F-15_Eagle|F-15 Eagle}}&lt;br /&gt;
|Eagle is a common name for many large birds of prey of the family Accipitridae.&lt;br /&gt;
Introduced in 1976, other jets like the F-16 have filled its role. The U.S. Air National Guard is the largest operator as of now. (''{{w|McDonnell Douglas}}'')&lt;br /&gt;
|-&lt;br /&gt;
|{{w|Kestrel|Kestrel}}&lt;br /&gt;
|{{w|Kestrel_K-350|Kestrel K-350}}&lt;br /&gt;
|A bird of prey that can hover before swooping in on its prey.&lt;br /&gt;
The Kestrel is a single-engine, proof-of-concept aircraft, similar to the {{w|Pilatus PC-12}}. (''{{w|Kestrel Aircraft}}'')&lt;br /&gt;
|-&lt;br /&gt;
|{{w|Hawk|Hawk}}&lt;br /&gt;
|{{w|BAE_Systems_Hawk|Hawk T1}}&lt;br /&gt;
|A hawk is a large bird of prey with a heavy head and beak. They have very acute vision.&lt;br /&gt;
A trainer aircraft. It is flown by the Royal Air Force display team, the ''{{w|Red Arrows}}''. {{w|T-45 Goshawk}} is the U.S. designation of a variant of this aircraft. The fuselage silhouette is of a BAE Hawk, although other aircraft have also had Hawk-related names, for example the Hawker [https://en.wikipedia.org/wiki/Hawker_Sea_Hawk Sea Hawk] and the Douglas [https://en.wikipedia.org/wiki/Douglas_A-4_Skyhawk A-4 Skyhawk]. (''{{w|BAE Systems}}'')&lt;br /&gt;
|-&lt;br /&gt;
|{{w|Common blackbird|Blackbird}}&lt;br /&gt;
|{{w|Lockheed_SR-71_Blackbird|SR-71 Blackbird}}&lt;br /&gt;
|There are many birds that go under the {{w|Blackbird#Birds|name blackbird}} but the common blackbird is a species of {{w|true thrush}}.&lt;br /&gt;
A Mach 3+ spy aircraft, known for its speed and engine design (which allowed them to work both as turbines and ramjets). Imagine a bird flying at supersonic speeds, if anything, it would be disastrous at the least.{{Citation needed}} (''{{w|Lockheed Martin}}'')&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[A silhouette identification guide chart shows eight silhouettes in two rows. The silhouettes are a combination of the fuselage of an aircraft and the wings of birds, or in the second case an insect. Below each silhouette is a label:]&lt;br /&gt;
:Osprey  Hornet  Falcon  Harrier&lt;br /&gt;
:Eagle  Kestrel  Hawk  Blackbird&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Charts]]&lt;br /&gt;
[[Category:Animals]]&lt;br /&gt;
[[Category:Aviation]]&lt;/div&gt;</summary>
		<author><name>172.68.35.119</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:3074:_Push_Notifications&amp;diff=372019</id>
		<title>Talk:3074: Push Notifications</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3074:_Push_Notifications&amp;diff=372019"/>
				<updated>2025-04-09T23:24:02Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.35.119: Forgot to sign&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&amp;lt;!--Please sign your posts with ~~~~ and don't delete this text. New comments should be added at the bottom.--&amp;gt;&lt;br /&gt;
So...this is the April Fool's comic, if I'm not mistaken... Oh ye of little faith! [[Special:Contributions/172.71.26.106|172.71.26.106]] 20:00, 9 April 2025 (UTC)&lt;br /&gt;
&lt;br /&gt;
I turned this on thinking it would just be a few every so often but I quickly realized how this is xkcd and it doesn't &amp;quot;joke&amp;quot;. I had to turn this off because it disrupted my schoolwork by popping up every fricking 5 minutes&lt;br /&gt;
&lt;br /&gt;
Apparently my employer (or ublock) is keeping me from experiencing the full effect of any notifications. All I get is &amp;quot;An *actual* error has occurred. [[Special:Contributions/162.158.91.173|162.158.91.173]] 20:52, 9 April 2025 (UTC)&lt;br /&gt;
&lt;br /&gt;
What the heck are the &amp;quot;Zoom Notification&amp;quot; ones, with just a pair of numbers? Now that I've been sitting with this for a little bit, they're by far the most common notifications, and the most mysterious. What is &amp;quot;zoom&amp;quot;ing or should be zoomed-in-on or whatever, and what do the two numbers signify? [[Special:Contributions/172.68.22.75|172.68.22.75]] 20:35, 9 April 2025 (UTC)&lt;br /&gt;
:I think they're coordinates. So far (x,y) has had x from 4 fo 73 (that I've seen) and y from 2 to 28. That gives a tad over 2000 possible combinations, but omething tells me there won't be more than 500 or so in total. Quite a few y=24 (not yet adjacent by x), and any given x has 0 to 3 different y partners (so far). They ''do'' repeat (I'm not recording how many times, but I'm scatterplotting what I get). The ones prefixed with &amp;quot;oh look!&amp;quot; are tightly clustered in x=6..13 and y=4..11, so far, with no non-&amp;quot;oh look!&amp;quot; ones there, so I'm plotting them in a different marker. I ''suspect'', after many many more Zoom Notifications, I'll be left with (enough of) a pixelated image's pixels (of two types, background colour excluded), or else I'm doing it wrong and I should be drawing lines between the dots, but I never managed to grab them all, so I'm relying on it being a random &amp;quot;spraygun droplets&amp;quot; sort of image-reveal. (Still some way to go...) [[Special:Contributions/172.71.241.66|172.71.241.66]] 23:08, 9 April 2025 (UTC)&lt;br /&gt;
&lt;br /&gt;
Made a new page called [[3074: Push Notifications/Table of Notifications]], much like [[1506: xkbutt/List of Permalinks]]. I’m hoping that we can put all of the possible notifications into the table, along with any possible images that go along with it and an explanation (if necessary). '''[[User:42.book.addict|&amp;lt;span style=&amp;quot;font-family:Cormorant Garamond;font-size:9pt;color:pink&amp;quot;&amp;gt;42.book.addict&amp;lt;/span&amp;gt;]]&amp;lt;sup&amp;gt;[[User talk:42.book.addict|&amp;lt;span style=&amp;quot;font-family:Cormorant Garamond;font-size:6pt;color:#B1E4E3&amp;quot;&amp;gt;Talk to me!&amp;lt;/span&amp;gt;]]&amp;lt;/sup&amp;gt;''' 21:26, 9 April 2025 (UTC)&lt;br /&gt;
:I think it might be a good idea to make the table something more like source/name/notification, because there are chains of notifications where the name changes, like the How Many Times Can You Click This? notification. --[[User:Magicalus|Magicalus]] ([[User talk:Magicalus|talk]]) 23:19, 9 April 2025 (UTC)&lt;br /&gt;
&lt;br /&gt;
I clicked on the silence notifications at a cost button a lot and it set Cueball's PC on fire?&lt;br /&gt;
&lt;br /&gt;
I found what is presumably the source code (?) of the comic through the transcript. It’s all JS pages. No idea what they mean (I’m not good with code), but I’m sure that there are some on here that can help dissect it. '''[[User:42.book.addict|&amp;lt;span style=&amp;quot;font-family:Cormorant Garamond;font-size:9pt;color:pink&amp;quot;&amp;gt;42.book.addict&amp;lt;/span&amp;gt;]]&amp;lt;sup&amp;gt;[[User talk:42.book.addict|&amp;lt;span style=&amp;quot;font-family:Cormorant Garamond;font-size:6pt;color:#B1E4E3&amp;quot;&amp;gt;Talk to me!&amp;lt;/span&amp;gt;]]&amp;lt;/sup&amp;gt;''' 21:50, 9 April 2025 (UTC)&lt;br /&gt;
:https://xkcd.com/3074/marconi/manifest.json &lt;br /&gt;
:https://xkcd.com/3074/marconi/static/js/42.4f5b21b3.js&lt;br /&gt;
:https://xkcd.com/3074/marconi/static/js/index.js?v=1&lt;br /&gt;
&lt;br /&gt;
I have a sneaking suspicion the Zoom Notifications are sketching out an image of some sort &lt;br /&gt;
(Update: after plotting like 60 of them no apparent pattern is to be found)  [[User:SkiesShaper|SkiesShaper]] ([[User talk:SkiesShaper|talk]]) 22:24, 9 April 2025 (UTC)&lt;br /&gt;
: I've plotted 397 and it seems to be forming some kind of animal. Maybe a cat, given the comic theme? [[Special:Contributions/172.68.35.119|172.68.35.119]] 23:24, 9 April 2025 (UTC)&lt;br /&gt;
&lt;br /&gt;
Apparently one of the notifications is: &amp;quot;The Earth is spinning at a rate of 1 rpd&amp;quot; This is true if you round it, but not exact. The time it takes to rotate is called a sidereal day, and there's one extra sidereal day a year. Basically, there's one solar day removed in a year, because the Earth's motion around the sun cancels it out. Think of it with a tidally locked planet. It spins around once a year, but the sun never moves. Really there's 1.0027379 rotations per day. [[User:DanielLC|DanielLC]] ([[User talk:DanielLC|talk]]) 23:02, 9 April 2025 (UTC)&lt;/div&gt;</summary>
		<author><name>172.68.35.119</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3061:_Water_Balloons&amp;diff=368598</id>
		<title>3061: Water Balloons</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3061:_Water_Balloons&amp;diff=368598"/>
				<updated>2025-03-11T04:32:18Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.35.119: /* Transcript */ cats&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 3061&lt;br /&gt;
| date      = March 10, 2025&lt;br /&gt;
| title     = Water Balloons&lt;br /&gt;
| image     = water_balloons_2x.png&lt;br /&gt;
| imagesize = 578x713px&lt;br /&gt;
| noexpand  = true&lt;br /&gt;
| titletext = Update: The physics department has recruited an astronomer who studies meteor fireballs.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a BOT - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Astronomy]]&lt;br /&gt;
[[Category:Physics]]&lt;br /&gt;
[[Category:Games]]&lt;/div&gt;</summary>
		<author><name>172.68.35.119</name></author>	</entry>

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