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Old November 24th 03 posted to sci.physics.relativity
Androcles
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Default Velocity Of light


"Rudolf Drabek" wrote in message
...

"Androcles" schrieb im Newsbeitrag
...

"HenriWilson" wrote in message
...
On 22 Nov 2003 23:01:50 -0800, (Jean) wrote:

My Query is quite simple........


Why can't a body simply accelerate and exceed the velocity of

light????????

Just increase the velocity by some m/s for some time to reach the C

....!

'Velocity' on its own does not exist.

'Velocity can only be defined wrt another object.

If relative velocity is measured using light, it is pretty obvious

that
problems will arise near and beyond light speed. This has caused great
confusion in the physics ranks.

If relative velocity is measured using an infinite grid of synched

clocks,
(simulating instantaneous communication) these problems disappear.

Thus it should be quite possible to travel to a planet 10 LY away in

'5
minutes' if suitable rocket engines are available and your body can

stand
the
g's.

What is more, when you return, you will be only 10 minutes older.

However an observer on Earth will still be monitoring your spaceship's

journey
for twenty years after you have returned.

Relativity is BULL!!!


For the outward trip, monitoring would fail when c was achieved relative

to
the monitoring station, doppler shift would fall to zero. At any speed
beyond that, the light would never reach the monitoring station. As the

ship
decelerated to less that c to turn around, the signal would resume. On

the
return trip, the frequency at c will double. The ship will be able to

read
its own signals that it outrun in the first part of the journey. Note

that
this in no different to firing bullets backwards as you accelerate. When

you
return they'll still be there, you'll run right into them.
Androcles

Your last statements are not correct. You are mixing up shiptime and
earthtime.

No I'm not, Ship time and Earth time are the same.
GPS clocks run fast, not slow, and have to be corrected to Earthtime from
the ground since they were misprogrammed by relativists.


Seen from earth the ship never exceeded c, so its not possible to run into
the own signals.
Only the moving clock has a dilated time.

Rudi

Prove it.
Androcles


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