[braingenious]

This is hilarious. U-238 is not fissionable so ChatGPT just hallucinated that it is and then used Wolfram as a simple calculator.

Whoa man, it’s like, the future dude!

[causi]

It's using the energy of radioactive decay, not of a fission chain reaction. Where ChatGPT actually made a mistake was in ignoring the fact you can't get that energy out quickly enough. 1 gram of u-238 will release 19 million Calories of heat over the course of its existence but that will take many billions of years.

[braingenious]

From the screenshot:

“The energy content of uranium-238 can be calculated based on its energy release per fission event. The energy release per fission event of uranium-238 is approximately 200 MeV (million electronvolts”

[mdanger007]

It's implied that the uranium sandwich comes with two slices of boron and mayo.

[rhn_mk1]

Nice try, ChatGPT's evil twin. U-238 is fissionable according to this

https://books.google.de/books?id=b5OsewV7smEC&pg=PA473&lpg=P...

"Such reactions produce fast neutrons which cause fission in uranium-238, which is not fissile by slower neutrons below energies of 1MeV."

[akiselev]

Nitpick: fast neutrons don't cause fission in uranium-238, they cause it to transmute into uranium-239 [1] which is a much less stable isotope with a half life of less than 30 minutes before it decays into neptunium-239.

[1] https://en.wikipedia.org/wiki/Isotopes_of_uranium#Uranium-23...