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Cake day: June 16th, 2023

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  • ryven@lemmy.dbzer0.comtoxkcd@lemmy.worldxkcd #3033: Origami Black Hole
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    7 months ago

    I think that might be an underestimate. Mass and energy should be conserved, so if the entire black hole evaporates the total energy output should be E = mc2. An A4 page has a mass of 6.25g. c is the speed of light, 299,792,458m/s.

    0.00625kg * (299,792,458m/s)2 = 561,721,986,710,511.025J

    The explosion of 1 metric ton (1000kg) of TNT is considered to be equivalent to 4,184 Joules. So 100KT = 418,400,000J. That’s not close at all, we’re gonna need more TNT:

    561,721,986,710,511.025J / 4,184J/ton of TNT = ~134,254,776,938 tons of TNT.

    Rounding off to significant figures, we’re looking at 134 gigatons of TNT. For comparison, the Tsar Bomba, the most powerful nuclear weapon ever tested, had a yield of 50-58 megatons. That’s somewhere in the neighborhood of 2,500 Tsar Bombas!

    Maybe this paper folding experiment should be performed away from anything that might be damaged by the explosion. Like, uh, inhabited continents.

    As pointed out below, I biffed the joules-per-ton-of-TNT thing, sorry!



  • So what are we expecting to see in June?

    This seems like the last chance to announce a Switch release for Metroid Prime 4. If we don’t see it, I’ll assume it was pushed to the next console.

    I thought the rumors of a remake for Fire Emblem: Genealogy of the Holy War sounded likely. FE 4 and 5 have both never been remade and never officially been made available in English, but 4 is popular in Japan and Sigurd had a relatively prominent role in Engage compared to most of the other Emblems. However, we haven’t heard anything about it, so if we don’t hear about it in June I’ll assume they aren’t doing it.