Re: Mach's principle and aether

On Mar 13, 11:36 am, Tom Roberts <tjroberts...@xxxxxxxxxxxxx> wrote:
Sue... wrote:
On Mar 12, 11:36 pm, Tom Roberts <tjroberts...@xxxxxxxxxxxxx> wrote:
Nobody expects SR to be a good model of the world we inhabit. After
all, it is only a LOCAL APPROXIMATION to a much better theory, GR.

When my clock is slower than yours but your clock is slower than
mine ABSURD seems a better description than APPROXIMATE.

The only absurdity is in YOUR statement, not SR. SR in no way implies
"my clock is slower than yours but your clock is slower than mine".

What SR actually says, for an appropriate physical situation, is: you
MEASURE my clock to run slower than yours, and I MEASURE your clock to
run slower than mine; the difference in our MEASUREMENT PROCEDURES makes
this happen, and makes it not be a contradiction. Basically we are
measuring different things, and this difference is inherent when
measuring the rate of a moving clock.

I see. The word MEASURE makes all the difference.


If you would STUDY what SR actually is, rather than using a comic-book
approach, you might actually LEARN something.

The reference to de Sitter was from the Einstein's 1920 paper.
It is not clear which person you equate with an author of
comic books but I'll consider you attention to detail when
I purchase paint again.

I will have it MEASURED to cover a wall that I have
MEASURED to be 20 square meters. :o)

Sue...



Tom Roberts

.

Relevant Pages

  • Re: Machs principle and aether
    ... all, it is only a LOCAL APPROXIMATION to a much better theory, GR. ... mine ABSURD seems a better description than APPROXIMATE. ... SR in no way implies "my clock is slower than yours but your clock is slower than mine". ...
    (sci.physics.relativity)
  • Re: Machs principle and aether
    ... When my clock is slower than yours but your clock is slower than ... measuring the rate of a moving clock. ... reasonable person would consider to be further elaboration. ...
    (sci.physics.relativity)
  • Re: Time dilatation and a space referential
    ... >> If I got it right, the faster you go, the slower ... This rockets clock will run faster. ... > Then when the rocket has to rejoin you, ... > real reason why it is called relativity. ...
    (sci.physics.relativity)
  • Re: Have you ever wondered.....
    ... The thing we are measuring is the same thing. ... by black box I mean the atomic clock ... equivalent to motion which tiggers the generation of events. ... able to say with any degree of reasonableness that "In physics, ...
    (sci.physics.relativity)
  • Re: twin paradox, but a symmetric one
    ... arrival at Earth. ... A will see on B's clock for the entire trip ... on the land really slower. ... because once we choose which math formula ...
    (sci.physics.relativity)
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