"Pentcho Valev" wrote in message ...
http://rockpile.phys.virginia.edu/mod04/mod34.pdf

So we have:

(A) f'/f = (c+v)/c
================================================== ====
If you are chasing the ambulance with velocity u then
f’/f = (c+v)/(c+u)
where v and u are relative to air.
sonic boom when u = –c, division by zero.
Look, 1 = c/c, Valev.
If you insist on writing 1+v/c instead of c/c + v/c = (c+v)/c then you’ll
never consider u at all, psychologically.
Sonic Boom, Valev. wavelength = 0, frequency infinite. Sound arrives
as the air ambulance arrives. Experimentally verified.
Air is a medium for sound, there is no medium for light.
FOR PSYCHOLOGY’S SAKE CHANGE 1+V/C to (C+V)/C !!!!
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