Re: the notion of counter-intuitiveness in relativistic physics

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Sujet : Re: the notion of counter-intuitiveness in relativistic physics
De : ttt_heg (at) *nospam* web.de (Thomas Heger)
Groupes : sci.physics.relativity
Date : 13. Oct 2024, 07:19:44
Autres entêtes
Message-ID : <ln173sFhohmU1@mid.individual.net>
References : 1 2 3 4 5 6 7
User-Agent : Mozilla Thunderbird
Am Mittwoch000007, 07.08.2024 um 23:28 schrieb Richard Hachel:
Le 07/08/2024 à 22:22, nospam@de-ster.demon.nl (J. J. Lodder) a écrit :
Richard Hachel <r.hachel@jesauspu.fr> wrote:
>
Le 07/08/2024 à 16:25, hitlong@yahoo.com (gharnagel) a écrit :
On Wed, 7 Aug 2024 13:18:33 +0000, Richard Hachel wrote:
>
Le 07/08/2024 à 12:09, film.art@gmail.com (JanPB) a écrit :
>
Your biggest problem at this time is that you cannot understand the
explanations given to you.
>
<http://news2.nemoweb.net/jntp?74ipUL6JcQu72w-mbGQ7BbVp7kU@jntp/
Data.Media:
1>
>
I laughed.
>
R.H.
Hmm, doesn't look like a laugh.  Maybe an OMG!  Meaning, you just
realized that Jan is right.  Well, maybe a laugh would be appropriate,
too, meaning "how could I have been so wrong!"
You come up with your D'=D.sqrt[(1+Vo/c)/(1-Vo/c)], which isn't
length
contraction but Doppler shift, which is dependent on the sign of your
Vo.  LC is NOT so dependent.  It would be a VERY strange universe if
it were.
>
You say: "it's a Doppler shift".
And for sqrt(1-Vo?/c?)?
Isn't it a Doppler shift?
Yes, it's also a Doppler shift.
This is what Hachel calls the "internal Doppler effect".
Relativists call it the transverse Doppler effect, but the term is neither
fair nor pretty.
>
It was reasonable and fair nomenclature at the time.
People didn't have relativity in order,
and they discussed the motion of electrons in terms of variable masses.
They discovered that the 'longitudinal mass' and the 'transverse mass'
of the electron were different.
It seemed quite reasonable at the time to extend the notion to light,
because the terminology was already current,
>
Jan
 The big problem with relativity is the almost complete absence of clear concepts.
There is no need to talk about transverse mass, longitudinal mass, and other such joys.
Mass is a scalar quantity and denotes the resistance to acceleration.
It is NOT 'quantity of matter' or similar!
Such a measure cannot have attributes like 'traverse' or 'longitudinal', because a scalar quantity has no direction.
To quantify matter with units like kg is a sin, even if it is understandable. But it is wrong, nevertheless.
The reason is, that units are defined before they are used. And afterwards you need to stick to these definitions. And the definition of the term 'mass' stems already from Newton.
If you don't, you would sink into quick-sand and loose all grounds in science.
TH
...
TH

Date Sujet#  Auteur
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7 Aug 24 `* Re: the notion of counter-intuitiveness in relativistic physics97JanPB
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