Science Memes

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submitted 7 months ago by [email protected] to c/[email protected]

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[–] [email protected] 4 points 7 months ago* (last edited 7 months ago) (1 children)

The numbers don't add up. If you can get 21 billion US food calories from total annihilation (which I checked is right), you'd get nowhere near 18 billion food calories from a fusion reaction. Maybe it works if you assume "calories" for the fission reaction means metric calories, since US food calories are metric kilocalories.

I hate the way the word "calorie" ended up with two wildly different definitions.

[–] [email protected] 5 points 7 months ago (1 children)

Yeah, I looked up energy density assuming fast neutron reactor, and it's "only" 7 million US food calories.

[–] [email protected] 3 points 7 months ago

US calories are equal to the real metric unit of kilocalories. Maybe the meme above used real calories