Am 23.04.2018 um 20:43 schrieb Henry Spencer:
The most interesting difference is that the original says how big the
world-wrecking worst-case explosion would be: 100 million tons of
conventional explosive. He presumably calculated that from the
published information on fission. It's roughly a factor of 2 too high
for his mass of U-235 -- he may have confused total energy release with
energy per fission fragment, or worked from a source which did -- but
that aside,