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tech / sci.physics.relativity / Re: What causes contraction? and why?

SubjectAuthor
* Re: What causes contraction? and why?Robert Winn
`- Re: What causes contraction? and why?Odd Bodkin

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Re: What causes contraction? and why?

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Subject: Re: What causes contraction? and why?
From: rbwi...@gmail.com (Robert Winn)
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 by: Robert Winn - Tue, 15 Jun 2021 03:27 UTC

On Monday, May 31, 2021 at 3:13:05 PM UTC-7, mitchr...@gmail.com wrote:
> No it does not exist in space or length...
> What causes it and why?
>
> Mitchell Raemsch
Well, I asked a scientist, and here was the answer I got. I was using two sets of Galilean transformation equations to represent the times of two clock with different rates in the following manner.
x'=x-vt
y'=y
z'=z
t'=t

x = x' - v'n'
y=y'
z=z'
n=n'

No, said the scientists, you are not allowed to do that. t' has to be the time of the clock in S'.
OK, I said, let t' be the time of the clock in S'. The two sets of equations we have now are:
x'=x-vt
y'=y
z'=z
?=t

x = x' - v't'
y'=y
z'=z
??=t'

The question marks represent the time coordinates missing because we had to use t' as the time of the clock in S'. So now we say that the speed of light is c=186,000
miles per second in both sets of equations, so we obtain, x=ct, x'=ct', which is OK with scientists because it is what Einstein did.
ct'=ct-vt
t' = t-vt/c
But this only considers photons directed in the +x direction. Photons directed in the -x direction have a velocity of -c, not c.
-ct' = -ct -vt
t'=t -vt/(-c)
So to accommodate all photons,
t'=t-vx/c^2
Wonderful, said the scientists. You have done what Lorentz did to obtain the numerator of his equation. Well, then we can say from this,
x'=x-vt
y'=y
z'=z
t'+vx/c^2 =t

x = x' - v't'
y = y'
z = z'
t-vx/c^2 = t'
So where did the gamma = 1/sqrt(1-v^2/c^2) come from? A scientist showed me that also. I will look it back up and post it.

Re: What causes contraction? and why?

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From: bodkin...@gmail.com (Odd Bodkin)
Newsgroups: sci.physics.relativity
Subject: Re: What causes contraction? and why?
Date: Tue, 15 Jun 2021 12:35:51 +0000 (UTC)
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 by: Odd Bodkin - Tue, 15 Jun 2021 12:35 UTC

Robert Winn <rbwinn3@gmail.com> wrote:
> On Monday, May 31, 2021 at 3:13:05 PM UTC-7, mitchr...@gmail.com wrote:
>> No it does not exist in space or length...
>> What causes it and why?
>>
>> Mitchell Raemsch
> Well, I asked a scientist, and here was the answer I got. I was using
> two sets of Galilean transformation equations to represent the times of
> two clock with different rates in the following manner.
> x'=x-vt
> y'=y
> z'=z
> t'=t
>
> x = x' - v'n'
> y=y'
> z=z'
> n=n'
>
> No, said the scientists, you are not allowed to do that. t' has to be
> the time of the clock in S'.
> OK, I said, let t' be the time of the clock in S'. The two sets of
> equations we have now are:
> x'=x-vt
> y'=y
> z'=z
> ?=t
>
> x = x' - v't'
> y'=y
> z'=z
> ??=t'
>
> The question marks represent the time coordinates missing because we had
> to use t' as the time of the clock in S'. So now we say that the speed
> of light is c=186,000
> miles per second in both sets of equations, so we obtain, x=ct, x'=ct',
> which is OK with scientists because it is what Einstein did.
> ct'=ct-vt
> t' = t-vt/c
> But this only considers photons directed in the +x direction. Photons
> directed in the -x direction have a velocity of -c, not c.
> -ct' = -ct -vt
> t'=t -vt/(-c)
> So to accommodate all photons,
> t'=t-vx/c^2

Whoops. Doesn’t follow.

> Wonderful, said the scientists. You have done what Lorentz did to obtain
> the numerator of his equation. Well, then we can say from this,
> x'=x-vt
> y'=y
> z'=z
> t'+vx/c^2 =t
>
> x = x' - v't'
> y = y'
> z = z'
> t-vx/c^2 = t'
> So where did the gamma = 1/sqrt(1-v^2/c^2) come from? A scientist showed
> me that also. I will look it back up and post it.
>

--
Odd Bodkin — Maker of fine toys, tools, tables

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