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Cake day: June 16th, 2023

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  • Smoking proves that you officially Don’t Give a Shit about your long-term health, and Not Giving a Shit is the essence of being cool. I mean, I guess for a long time now “cool” has just meant “good,” but the original “cool” aesthetic was all about acting like you were probably going to die young and looking sexy doing it.

    Edit: And smoking definitely contributes to the sexy part. Smoldering embers. Oral fixation. Taking a long drag and letting it out slowly. Maybe it’s not for you, but it sure pushes my buttons, and I know it’s not just me.




  • Oh phonics is the old one (although it’s making a comeback). The “new” one that they’ve been promoting for a couple decades (and have recently realized isn’t very good) is cueing, the one where you just show kids words and encourage them to use context clues to guess what they mean, and hope that they eventually learn to read by doing that. Phonics is the one where you start with letter (and letter group) sounds and learn to sound out words by reading out loud.






  • ryven@lemmy.dbzer0.comtoxkcd@lemmy.worldxkcd #3033: Origami Black Hole
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    6 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!