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submitted 7 months ago by fossilesque@mander.xyz to c/science_memes@mander.xyz
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[-] lolcatnip@reddthat.com 4 points 7 months ago* (last edited 7 months ago)

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.

[-] qjkxbmwvz@startrek.website 5 points 7 months ago

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

[-] TonyTonyChopper@mander.xyz 3 points 7 months ago

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

this post was submitted on 03 Apr 2024
705 points (98.1% liked)

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