On Aug 28, 12:06*pm, Mike wrote:
On Aug 28, 7:23*am, Zinnic wrote:





On Aug 28, 12:29*am, Pentcho Valev wrote:

More REDUCTIO AD ABSURDUM. The problem: Initially the observer is at
rest relative to the light source but then starts moving towards the
source. The frequency (measured by the observer) increases. Does the
speed of light (relative to the observer) increase as well or does it
remain constant?

SNIP

*(3) Premise: (frequency)=(speed of light)/(wavelength)

(4) Premise: The wavelength is determined by the light source and is
independent of the movements of the observer

(1) Premise: (frequency)=(speed of sound in air)/(wavelength)
(2) Premise: The wavelength is determined by the sound source.

If you accept these premises then here are three questions from an
admittedly *physics 'ignoramus':

(a) Air is the vehicle for sound, but is space a vehicle for light?
(b) Is the speed of sound in air (V) *actually effected by the *speed
in air (v) of its source? * That is, does *the speed of sound in air
become (V + v)?
(c) If so, how is it possible to break the sound barrier. Would not
the sound always stay ahead of its source?

I need to know the answers before starting to doubt the dogma (?) that
"the speed of light in space is constant".

The speed of light in a vacuum is not dogma, it is a measured fact.
And, so far, no evidence has been found that contradicts Special
Relativity.- Hide quoted text -

- Show quoted text -

I agree! That is the reason for my questions to Pentcho Valev. He
probably will not answer so will anyone else (you?) care to?