Waves: Frequency and speed vary proportionally for a moving observer.

Particles: Frequency and speed vary proportionally for a moving observer.

Light in Einstein's relativity: Frequency varies but speed gloriously remains constant for a moving observer.

Einstein wrestled with his conscience "over a lengthy period of time, to the point of despair" before introducing the nonsense:

John Stachel: "But this seems to be nonsense. How can it happen that the speed of light relative to an observer cannot be increased or decreased if that observer moves towards or away from a light beam? Einstein states that he wrestled with this problem over a lengthy period of time, to the point of despair." http://www.aip.org/history/exhibits/einstein/essay-einstein-relativity.htm

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Pentcho Valev

On 2022-03-02 11:23:57 +0000, Pentcho Valev said:

> Waves: Frequency and speed vary proportionally for a moving observer.
>
> Particles: Frequency and speed vary proportionally for a moving observer.
>
> Light in Einstein's relativity: Frequency varies but speed gloriously
> remains constant for a moving observer.
>
> Einstein wrestled with his conscience "over a lengthy period of time,
> to the point of despair" before introducing the nonsense:
>
> John Stachel: "But this seems to be nonsense. How can it happen that
> the speed of light relative to an observer cannot be increased or
> decreased if that observer moves towards or away from a light beam?
> Einstein states that he wrestled with this problem over a lengthy
> period of time, to the point of despair."
> http://www.aip.org/history/exhibits/einstein/essay-einstein-relativity.htm
>

With typical quote-mining dishonesty Pentcho doesn't bother to tell us
what John Stachel had to say in the paragraph that immediately follows
the mining.

--
Athel -- French and British, living mainly in England until 1987.

Athel Cornish-Bowden <acornish@imm.cnrs.fr> wrote:

> On 2022-03-02 11:23:57 +0000, Pentcho Valev said:
>
> > Waves: Frequency and speed vary proportionally for a moving observer.
> >
> > Particles: Frequency and speed vary proportionally for a moving observer.
> >
> > Light in Einstein's relativity: Frequency varies but speed gloriously
> > remains constant for a moving observer.
> >
> > Einstein wrestled with his conscience "over a lengthy period of time,
> > to the point of despair" before introducing the nonsense:
> >
> > John Stachel: "But this seems to be nonsense. How can it happen that
> > the speed of light relative to an observer cannot be increased or
> > decreased if that observer moves towards or away from a light beam?
> > Einstein states that he wrestled with this problem over a lengthy
> > period of time, to the point of despair."
> > http://www.aip.org/history/exhibits/einstein/essay-einstein-relativity.htm
> >
>
> With typical quote-mining dishonesty Pentcho doesn't bother to tell us
> what John Stachel had to say in the paragraph that immediately follows
> the mining.

Yes, and we know what happened
(flash of insight after endless worrying)
because Einstein himself said so to Abraham Pais
in their many personal conversations.

Pais went to Princeton in 1947, and became friends with Einstein.
They talked a lot, and the gist of those conversations
was captured in Pais' book: 'Subtle is the Lord',

Jan

A light source emits equidistant pulses and an observer/receiver starts moving towards the source with speed v:

https://www.einstein-online.info/wp-content/uploads/SRT_Dopplereffekt_Pulse_4_%C2%A9_Daniela_Leitner_Markus_Poessel_Einstein-Online.gif

The speed of the light pulses relative to the observer shifts from c to c'=c+v, in violation of Einstein's relativity, and the frequency at the observer shifts from f=c/d to f'=c'/d.

The speed of the pulses relative to the observer will remain constant, c'=c, and Einstein's relativity will be saved, if the motion of the observer somehow shifts the distance between the pulses from d to d'=dc/(c+v). This is the ONLY way to save relativity, in accordance with the formula

(frequency) = (speed of light)/(distance between pulses)

The problem is that the shift from d to d'=dc/(c+v) is just as obviously idiotic as Big Brother's 2+2=5.

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Pentcho Valev