Editing Talk:3086: Globe Safety

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Hey, I thought we could revamp the old [[April Fools' Day comics]] page. I proposed a table or a list, and it would be nice if you commented. It should be a small project. '''You are welcome to [[Talk:April Fools' Day comics#Restructuring as a table or a nice list|comment here]]'''. Thanks!--[[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 18:02, 9 May 2025 (UTC)

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Hello! First time i got to a comic first --[[Special:Contributions/172.69.176.76|172.69.176.76]] 06:17, 8 May 2025 (UTC){{unsigned ip|104.23.175.202}}
:Well [[269: TCM|first of all]] remember to sign your comments :-). But congratz... --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 05:42, 8 May 2025 (UTC)
::Sorry. I now realize that that was an extremely trollish thing to do. --[[Special:Contributions/172.70.92.140|172.70.92.140]] 07:09, 8 May 2025 (UTC) ٠ـ٠
:: Also i MAY OR MAY NOT have permanently altered the editing process of this talk by including arabic numbers in an emoticon.{{unsigned ip|172.70.92.140|07:09, 8 May 2025 (UTC)}}

I believe he indicates that a globe is made by making a copy of the Earth, and then compressing it until it fits on a desktop. Hence having the same mass and thus the same Schwarzschild radius as Earth. I have changed the explanation a bit because of this observation.--[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 05:42, 8 May 2025 (UTC)

Gotta wonder what kind of a desk could support a desktop globe that weighs as much as the Earth --[[User:StumbleRunner|StumbleRunner]]
:[...] desk? Convince me that such a globe wouldn't plunge straight through the Earth's crust and into the mantle. I sense a marketing problem. [[Special:Contributions/172.71.147.69|172.71.147.69]] 07:07, 8 May 2025 (UTC) 

Radius. <s>Is there a typo in the comic where 7/10" should be 7/20", i.e., 0.35" as later written? Or would a 7/10" Earth collapse into a black hole nonetheless?</s>[[Special:Contributions/172.71.154.129|172.71.154.129]] 06:40, 8 May 2025 (UTC)
:Nope… the Schwarzchild radius is 0.35", which is indeed 7/20", but the measurement shown on the globe is the diameter, not the radius, so 7/10" is correct. [[Special:Contributions/172.71.178.143|172.71.178.143]] 06:49, 8 May 2025 (UTC)

Isn't there also a jab at the weird way USsians use power-of-two fractions for inch measurements? I've never seen something like 7/10" before, it would be approximated as 11/16".[[Special:Contributions/172.71.95.69|172.71.95.69]] 09:18, 8 May 2025 (UTC)
: It isn't a weird USian thing - it's just the historical way that inches (being a non-metric unit) were divided. The same way that an inch is a 1/12 division of a foot, which is a 1/3 division of a yard, etc. [[Special:Contributions/141.101.98.83|141.101.98.83]] 10:23, 8 May 2025 (UTC)

I think we have a bigger problem: there are millions of globes on Earth! I haven't done the calculations, but that might be enough to turn Earth into a black hole already; if not, I expect at least it would turn it into a star. --[[Special:Contributions/104.23.190.34|104.23.190.34]] 11:44, 8 May 2025 (UTC)

BTW. what would be a 12-inch object with a mass of Earth? Neutron star? Neutron planet? Neutron meteoroid? -- 12:46, 8 May 2025 (UTC)
: Crunching the numbers (thanks to Copilot.microsoft.com): 
:* A sphere with a 30 cm radius has a volume of about 1.13×10<sup>-2</sup> m³.   
:* Compressing Earth's mass into that volume gives a density of roughly 5.3×10<sup>28</sup> g/cm³. 
: That is way way denser than a neutron star. It's doubtful that such a sphere would remain at that density; it would likely explode immediately, or if prevented from doing so, continue to shrink down past 9mm and become a black hole. {{unsigned ip|172.70.110.59|13:26, 8 May 2025 (UTC)}}

'''False precision: .889 cm?''' Could someone please check "0.35 inches (0.889 cm)"? I'm concerned that this is a matter of {{w|false precision}}, with two significant digits for the customary / imperial system precisely converting to three significant digits in SI (similar to the way people obsess over 98'''.6'''F, which is a precise conversion of the estimate of 37C.). Also, I'd suggest that millimeters are preferable to centimeters. [[Special:Contributions/104.23.170.118|104.23.170.118]] 14:11, 8 May 2025 (UTC)
: 2 × 6.6738×10^−11 m^3⋅kg^−1⋅s^−2 × 5.972168×10^24 kg /  (299792458 m⋅s^−1)2 = 0.00887 m , so the current 8.9mm looks good. [[User:Nosh|Nosh]] ([[User talk:Nosh|talk]]) 19:16, 8 May 2025 (UTC)

Why are globes over 12 inches safer than those less than 12 inches?  The density calculation above seems to indicate that an earth mass object of 12 inch diameter is much denser than a neutron star.  (Of course that calculation was done with an AI - so may not be right.)  I did a little searching for things denser than neutron stars - didn't find much.  So what is special about 12 inches that makes earth mass things of that size change in safety regime  [[Special:Contributions/172.68.22.75|172.68.22.75]]
:I'm pretty sure there aren't any things denser than a neutron stars. (There are black holes, of course, but those are not really things and may not actually HAVE a meaningful density.) -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 05:07, 9 May 2025 (UTC)
::')DROP TABLE Talk:3086: Globe Safety; {{unsigned ip|162.158.108.51|07:22, 9 May 2025 (UTC)}}
:I think that's part of the joke. There's no safe cut-off at which globes made in this fashion would be OK - placing an Earth-sized Earth-mass object immediately adjacent to the Earth would be utterly catastrophic, never mind anything smaller.[[Special:Contributions/172.71.26.107|172.71.26.107]] 08:32, 9 May 2025 (UTC)