5 ms·

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 futu

• causi 4y ago
  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.
  • mdanger007 4y ago
    It's implied that the uranium sandwich comes with two slices of boron and mayo.
  • braingenious 4y ago
    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”
• rhn_mk1 4y ago
  Nice try, ChatGPT's evil twin. U-238 is fissionable according to this https://books.google.de/books?id=b5OsewV7smEC&pg=PA473&lpg=PA473&focus=viewport 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 4y ago
    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-239 https://en.wikipedia.org/wiki/Isotopes_of_uranium#Uranium-23...