Re: Minkowski spacetime and GRT.

Spirit of Truth wrote:
"Spaceman" <spaceman@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
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Spirit of Truth wrote:
"Hayek" <hayektt@xxxxxxxxxxxxxxxx> wrote in message
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socratus wrote:
=============
1.
SRT.

Minkowski spacetime was born in SRT.
In SRT gravity is absent.

Not quite.

In the center of the Earth, gravity is also absent.
But its effects, the slowing of the clock, are at its most.

But because it is "flat", this is ignored.

Time is nothing but a manifestion of motion.
Motion is controlled by inertia.

A clock is an inertiameter.

In SRT, inertia increases also, because our inertiameters slow
down, as our speed increases.


Well that appears correct, but what about simple time dilation
shown in the following link. Because the apparently the photon's
speed does not increase in the moving frame, it does not arrive in
the same time as in the non-moving frame:

http://www.btinternet.com/~j.doyle/SR/sr7/sr7.htm

In the photon bouncing sillyness,
The secondary frame that sees the photon traveling further
should stop ignoring the longer distance it is seen to travel
and that the relative speed of that photon would have to have
changed. According to the moving observer the photon traveled a
further distance per the same "bounce" time.
So that page is actually proof lightspeed is not constant to
all and there is no time dilation going on at all there.
That page proves lightspeed is relative but confuses it for
the bounce time changing rate when it does not change rate
at all.
:)

It is shown travelling the longer distance but at the same speed
= C, therefore the time factor is said to dilate.

If the speed did not increase, it would not make that trip
in the same bounce rate.
The trick they pull is the bouncing light.
The bouncing light is not moving at c.
It is a spot of light shined onto a plate and moved up and down,
Then of course they move the apparatus.
The bounce did not take a different time to get from top to bottom,
The path increases and the time it took to travel a longer distance
was the same time it took to travel from one side to the other when
not in motion.
The path is longer, the time is the same.
Lightspeed is not "constant" to all frames.
Simple as that.



.

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