Dan wrote:
> On 9/22/07 7:49 AM, neo wrote:
> > For stationary observer and moving observer speed of blades of fan is
> > same 'c'.
> >
>
>
> The issue is not a moving observer, but an accelerating observer with
> regard to the speed of light as measuring time. But no matter what, no
> matter the frame of reference the speed of light will always be measured
> to c, but the observer will measure the fan blade to a different value,
> because space is being distorted. Doppler shift does not apply which
> means that light is something more than sound. That Einstein(?) found
> it to be both a wave and particle is a clue. Big discoveries ahead!
Thanks Dan. I think I didn't explained enough so I am attemting to
explain again.
For stationary observer and moving observer speed of body rotating in
circuler motion is same 'c'. Both stationary and moving observer
will measure one rotation of body in same time interval 't'.
For stationary observer and moving observer, speed of particle
travelling in coil of spring is same . 'c'. Suppose that a straight
[[Spring]] is attached to bulb of torch and torch is stationary with
relative to observer. Suppose that photon is tracing path across coils
of this spring. The observer will measure one spiral rotation of
photon in time interval 't'.
Now suppose this source torch is moving with relative to observer
and '''the straight spring attached to bulb of torch is also moving
with torch'''. Even though the source(torch-spring) is moving with
relative to observer, still the observer will measure one spiral
rotation in same time interval 't'.
To understand this in better way, let us begin from small speed. For
example, a tenis ball rotating with speed m/s in spiral hollow
coil of spring having diameter 1 meter.
The stationary and moving observer will measure same speed of tenis
ball m/s in one spiral rotation.
It is to be noted that in two dimension, spring looks like transverse
~[[Wave]]~.
Put a straight spring on table. Mark fixed points A and B on table
somewhere across length of this straight spring. [[Velocity]] =
'''[[Frequency]] (number of coils between AB)'''*'''[[Wavelength]]
(distance between two coils of spring)'''.
When the source of light is moving away, spring is stretched and
'''wavelength''' increase. When source of light close in, spring is
compressed and number of coils between AB '''frequency'''
increases and '''wavelength''' decreases. So whether source of light
is stationary or moving, velocity of light remains same.
>
> > For stationary observer and moving observer, speed of particle
> > travelling in coil of spring is same . 'c'.
> >
> > In two dimension, spring looks like transverse ~wave~.
> >
> > When the '''spring''' between earth and flying away galaxy is
> > stretched, the distance between two coils '''wavelength'''
> > increases resulting in '''redshift'''.
> >