----- Original Message ----
> From: Stephen A. Lawrence <[email protected]>
> To: [email protected]
> Sent: Thu, April 1, 2010 4:01:43 PM
> Subject: Re: [Vo]:checking my understanding of Lorentz contraction
>
>
On 04/01/2010 03:51 PM, Harry Veeder wrote:
>
>
>
>
>
> ----- Original Message ----
>> From: Stephen A.
> Lawrence <
> href="mailto:[email protected]";>[email protected]>
>> To:
> ymailto="mailto:[email protected]";
> href="mailto:[email protected]";>[email protected]
>> Sent: Thu,
> April 1, 2010 2:53:15 PM
>> Subject: Re: [Vo]:checking my understanding
> of Lorentz contraction
>
> In short, acceleration
>> does
> not slow down clocks. This is predicted
> theoretically and has,
>
>> IIRC, been confirmed experimentally.
>
> so contrary
> to Einstein's equivalence principle gravity and acceleration are not
> equivalent?
Harry, please read the rest of what I wrote.
The
> strength of the gravitational field doesn't affect time, and neither
does the
> strength of acceleration.
I'll say it again, but I'm getting a little
> hoarse with repeating it:
Gravitational time dilation is a consequence of
> GRAVITATIONAL POTENTIAL,
*not* GRAVITATIONAL FIELD STRENGTH. This is a
> confusing but important
distinction.
Gravitational time dilation can
> be predicted from an argument based on
conservation of energy and the
> interconvertibility of mass and energy,
as I showed in an earlier post.
> And it doesn't depend in any way on
variations in the strength of the
> gravitational field.
how can you have GP without an GF?
Harry
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