Art Unwin wrote:

...
John, the danger in using mc squared is that it has not stood the test
of time. I have difficulty with it as the motion of an observer
acheiving the speed of light seems like standing on a sand spar
waiting for the tide to come in. Same goes with Feynman diagrams
as it just replaces an unknown with another unknown! Are these both
emporers with no clothes surrounded by Lemmings?
Art

Well, darn Art, those nuclear explosions, yanno', like the ones "we"
used to do in Nevada ... those flying particles, the heat, the light,
the radiation, the sand blast, the wind!, etc., it is hard enough to
keep track of all that c*rp flying about, at those speeds (not to
mention the amount of sun screen a guy needs just to be in vicinity!),
it is hard to arrive at an exact tally when, it is all over--yanno' what
I mean, Vern? ;-)

Regards,
JS