Re: Beam me up - trying to get a basic understanding of GR
- From: "Koobee Wublee" <kublai@xxxxxxx>
- Date: Wed, 4 May 2005 22:01:50 -0700
"Bill Hobba" <bhobba@xxxxxxxxxxxxxx> wrote in message
news:D5_de.2376$31.555@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
>> So far, I cannot find any holes in SR. However, the good old Lorentz
>> Transform is incomplete. It does not contain information on how to
>> transform one frame with certain value of the speed of light to another
>> frame with different (local) speed of light in vacuum.
>
> Of course it would not. SR deals with inertial frames and one of its
> assumptions is the speed of light is the same in all inertial frames.
If SR ASSUMES the speed of light to be the same for every frame of
reference, then it is incomplete. My interpretation of SR is based on a
sounding principle where nothing can physically be observed to travel faster
than the speed of light. This boils down to the fact that any observer
would always observe the speed of light to be of his own even if the
observed frame has a different value of the speed of light in vacuum than
the observer's.
> 'every frame of reference becomes the inertial one'? The POR says the
> laws
> of physics are the same in any inertial frame or one traveling at
> constant
> velocity wrt an inertial frame. Thus, obviously, a frame traveling at
> constant velocity wrt an inertial one is also inertial (it would be
> totally
> unreasonable, in this context, to not consider a frame being inertial as a
> law of physics). Thus there is no 'the' inertial frame. Also just as
> obviously a frame accelerating wrt to an inertial frame is not inertial
> (it
> has fictitious forces present) so every frame is not inertial. As usual
> you
> show a severe lack of understanding.
Maybe you need a good talk with Mr. Roberts or any GR expert. I believe
they are claiming inertial frames only apply to flat spacetime. What the
heck is an inertial frame anyway?
.
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