William "Chops" Westfield <westfw <at> mac.com> writes:
> Right.  A "detonation" is the supersonic reaction, and a "deflagration"
> is subsonic.  

Funny that deflagration seems to have the root from 'Phlogiston'. I guess that
the word deflagration suggests that the Phlogiston is being let out. Or, iow,
smoke let-out in 17th (?) century PhDspeak ? See more here:

  http://en.wikipedia.org/wiki/Phlogiston_theory

Peter P.


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