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[–] 10 points 2 years ago (1 child)

Ok, so each person is a little less than 20% carbon, so a pile of 177 bodies would contain about 2000 kilos of carbon.

A 1 carat round cut diamond has 0.2 grams of carbon and is about 5mm in diameter.

So what is that, 2 million diamonds? It would be a pile about the size of a car?

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  • [–] 13 points 2 years ago (1 child)

    There's some weird assumptions being made here--for example, a cremated body would not end up as a 13kg pile of carbon, almost all of it would be lost--but most of your basic facts are correct. The number of humans is actually 200 (there were 177 cars).

    If you did somehow extract all ~13kg of carbon from each of the 200 passengers pictured, you'd end up with 2,590,000 grams of pure carbon dust. If you then formed that into a single diamond, you'd get an object quite a lot smaller than a car. I couldn't find a way to calculate the size of a diamond from a known mass (apart from doing a bunch of algebra, and I didn't want to), so I used https://www.omnicalculator.com/other/diamond-carat and put in some ballpark numbers for diameter and depth until I got close to the target mass.

    I ended up at a sphere of diamond about 128cm in diameter. Still a big fuckin diamond, but you could put a bunch of those into one car, and it would be a lot smaller than the satirical pile of cremains in the meme.

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  • [–] 6 points 2 years ago (1 child)

    Ok, so each person is a little less than 20% carbon, so a pile of 177 bodies would contain about 2000 kilos of carbon.

    Dont forget that almost all of that carbon will be lost as CO2 during oxidation.

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