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xkcd #3033: Origami Black Hole (xkcd.com)

submitted 1 month ago by schnurrito@discuss.tchncs.de to c/xkcd@lemmy.world

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You may notice the first half of these instructions are similar to the instructions for a working nuclear fusion device. After the first few dozen steps, be sure to press down firmly and fold quickly to overcome fusion pressure.

https://explainxkcd.com/3033/

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[–] kbal@fedia.io 45 points 1 month ago (14 children)

They can be any mass, it's density that matters. The smaller ones will not do much damage before they evaporate.

[–] sheepy@lemm.ee 30 points 1 month ago (7 children)

Well, a black hole with the mass of an A4 page is gonna evaporate almost instantly, turning all of that mass into energy. Those 5 grams will give you about a 100 kT explosion.

[–] gregor@gregtech.eu 5 points 1 month ago (5 children)

That's...... a lot of energy from so little mass

[–] sheepy@lemm.ee 4 points 1 month ago

AFAIR it follows E = mc^2, so even 5 grams will give you quite a boom.

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