🚀 go-pugleaf

rotchm wrote:
> On Aug 10, 3:14 am, Pentcho Valev <pva...@yahoo.com> wrote:
>> If the observer suddenly starts moving towards the light source, the
>> frequency of light increases (Doppler effect). This has a SIMPLE
>> IMPLICATION: the wavecrests are now bumping more frequently into the
>> observer, that is, THE SPEED OF LIGHT RELATIVE TO THE OBSERVER HAS
>> INCREASED. "But this is fatal for Divine Albert's Divine Theory" - say
>> to themselves Einsteiniana's teachers and replace the SIMPLE
>> IMPLICATION with an IDIOTIC ONE:
> <SNIP>
> 
> 
> 
> If the observer suddenly starts moving towards the light source, he
> will observe the source to emit at a *lower* frequency and he will
> observe the reception of the crest at a greater frequency. Confusing
> huh ?

           λ/λo = sqrt [(c+v)/(c-v)]

   The mathematics of the phenomenon often clarifies a concept, as you
   have done toward the end of your posting. I often refer people to
   online references such as these, as they go into greater depth.

   See: http://scienceworld.wolfram.com/physics/DopplerEffect.html  (3)
        http://en.wikipedia.org/wiki/Relativistic_Doppler_effect


> 
> Is the observer observing the frequency of the source or the frequency
> of the received signal?
> 
> And realize that there are two factors involved in the Doppler effect:
> Time dilation which changes the frequency of the source ( wrt
> observer) and the classical effect of the source "catching up" ( or
> receeding) to the wavecrest.  The first tends to reduce the received
> frequency of the crests and the latter tends to increase the received
> frequency of the crests. The net effect is an increased in the freq.
> of the received crests ( for an approaching observer/source) and the
> value is given by the relativistic formula for "Doppler effect":
> f_received = f_proper * s(1+b)/s(1-b).
> 
> 
> 
>