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From: Thomas Heger <ttt_heg@web.de>
Newsgroups: sci.physics.relativity
Subject: Re: Relativity Derives Zero Deflection of Light By Gravity.
Date: Sun, 23 Feb 2025 09:16:37 +0100
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Am Samstag000022, 22.02.2025 um 20:28 schrieb LaurenceClarkCrossen:
> On Fri, 21 Feb 2025 8:26:26 +0000, Thomas Heger wrote:
> 
>> Am Donnerstag000020, 20.02.2025 um 22:44 schrieb Richard Hachel:
>>> Le 20/02/2025 à 22:31, "Paul B. Andersen" a écrit :
>>>> So you prefer to believe that your derivation that
>>>> photons are not affected by gravity is correct,
>>>> and that GR's predictions thus are proven wrong.
>>>>
>>>> So you must be ignorant of the fact that photons are observed
>>>> to be deflected by gravity exactly as predicted by GR.
>>>>
>>>> Because you would not claim that "photons cannot be affected
>>>> by gravity" if you knew that they are.
>>>>
>>>> Or would you? :-D
>>>>
>>>> Paul
>>>
>>> What is the evidence that photons are deflected by the presence of
>>> matter in space?
>>
>> The photons are not affected, but space itself is.
>>
>> The idea of GR was, that gravity is actually an effect of 'curvature',
>> which is itself caused by gravity.
>>
>> What gets curved is actually the 'axis of time' local to a certain part
>> of space.
>>
>> What we call 'space' has a certain (geometric) relation to the axis of
>> time, if we regard the axis of time as imaginary and the axes of space
>> as real.
>>
>> Then we have i as a factor, by which time gets multiplied and what gives
>> us three real axes of space.
>>
>> This space is therefore depending on the direction of time.
>>
>> Curvature of the axis of time is actually an acceleration in a
>> space-time diagram, which usually has one axis of time and only one of
>> type space.
>>
>> Now this can 'curve' and we get gravity, which is a force, that results
>> from such curvature.
>>
>> Now light ('photons') pass through such a distorted space upon force
>> free straight lines, which are actually curved in spacetime in presence
>> of a gravitational field.
>>
>> This pass is NOT curved by gravitation, but by curvature of space.
>>
>>
>> ....
>>
>>
>> TH
> Curving the (imaginary) axis of time cannot curve real space since space
> is not a surface.


What we call 'space' is actually our own past-light cone.

It is a picture we receive from the past and therefore not real.

This picture depends on our own position and state of motion.

We regard it as 'real thing' because we can see stars and galaxies and 
all sort of other things, which actually do not exist (anymore).

TH