"Hans Franke" <Hans.Franke(a)mch20.sbs.de> wrote:
Ridicoulous to think that there has never in this Universe
been a critical gathering of fissionable material big enough
to start a reaction. But we don't need the universe it has
hapened on earth - there are several natural uranium deposits
that tell stories that there must have been a moderate fission
process within in the past.
Hi
It isn't just the quantity of fissionable material that
makes a bomb work, you also need a way to increase
the number of neutrons quickly. This material is sometimes
called a trigger. The idea is a fast bomb, not a slowwww one.
Dwight