The Theory of Invariance

Postulate 2: "The speed of light in a vacuum is the same for all observers, regardless of their relative motion or of the motion of the source of the light."

Effect of motion of source is experimentally confirmed by the twin stars.
What experimental confirmation do we have for the effect of the motion of the observer?

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Bart</i>
<br />Coming back to the MPG experiment.

The belt speeds = the exact <b>orbital velocity</b> of the Earth in each of the East-West legs in the experiment.


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Wait a minute,

In the MGP experiment, I think they claim Earth's rotation, not the Earth's orbital velocity around Sun.

In the MGP experiment, You claim earth's orbital velocity around Sun or you claim earth's rotation on its axis?

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Effect of motion of source is experimentally confirmed by the twin stars.
What experimental confirmation do we have for the effect of the motion of the observer?
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I think the twin stars confirm both cases because we can't say light source or observer is moving. What we can be sure is Relative motion between them. Relative velocity of light source with respect to an observer is as same as relative velocity of the observer with respect to the light source.

However, if you require an experiment to confirm the effect of the "motion of the observer", I can suggest an experiment on equator with an instrument which can measure light velocity. Then you measure and compare Sun light velocities at Sun rise and Sun set.

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Hi Bart,

You may never believe that in vacuum, velocity of light c is a constant <b>regardless any motion</b>. However you knew that in Physics there are many <i><b>real </b></i>equations has been established on c ( P = E/c,..)

So what happens if c can be changed? If c can be changed then the whole universe can be detroyed. This is why c must be a constant.

Indeed a typo.

The MPG experiment was indeed able to detect the difference of the speed of light in the in the 2 East-West legs (as can be derived from the Earth rotation around its axis).

Experiments to confirm the effect of the "motion of the observer":
- Michelson Morley &gt; shows "Null result" when trying to measure the orbital speed
- Michelson Gale &gt; shows "Expected result" when measuring the rotation of Earth around its axis
Can you think about a solution that would explain both effects?

I indeed believe that c is variable:
- decreases with gravity
- decreases with increased speed relative to 'ether'
and that universe is indeed destroyed through 'black holes'

I documented my reasoning in 'the global science journal': www.wbabin.net > select author 'Leplae'.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Bart</i>
I indeed believe that c is variable:
1- decreases with gravity
2- decreases with increased speed relative to 'ether'
and that universe is indeed destroyed through 'black holes'

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Hi Bart,

Could you teel me

1. Why & how is speed of light changed in gravity?

2. Where does your belief of 'black holes' come from? And is it as same as blackholes in Relativity?