Girish Mahajan (Editor)

Bethe–Feynman formula

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The Bethe–Feynman efficiency formula, a simple method for calculating the yield of a fission bomb, was first derived in 1943 after development in 1942. Aspects of the formula are speculated to be secret restricted data.

  • a = internal energy per gram
  • b = growth rate
  • c = sphere radius

    • a ≈ ( b c ) 2 f

    A numerical coefficient would then be included to create the Bethe–Feynman formula—increasing accuracy more than an order of magnitude.

    References

    Bethe–Feynman formula Wikipedia
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