Light speed...

[Tree Penguin]

Is the top speed of light emitted by something the velocity of the light emitter + lightspeed or just lightspeed?

[russ_watters]

The speed of light is always C. The speed of the emitter is irrelevant.

[Doc Al]

Is the top speed of light emitted by something the velocity of the light emitter + lightspeed or just lightspeed?
The speed of the light emitter does not add to the speed of the light itself. The speed of light is a constant independent of the speed of the source or the detector.

[Gonzolo]

That's why we need special relativity.

[Tree Penguin]

That's why we need special relativity.
Can yuo explain that to me (i am a physics noob)?

I read about galaxies moving away from us at near lightspeed, is the lightspeed relative to the galaxy's own velocity (as if it where stuck in one place). I guess so as i understood all movement was relative. (might that be special relativity?)

Tell me and correct me if i said anything stupid. Thanks :).

[kuenmao]

Special relativity states that the speed of light in vacuum is a constant "c" to any observer. So, the "lightspeed" is relative to everyone.
You'll need to learn special relativity to understand the idea :)

[Prometheus]

Special relativity states that the speed of light in vacuum is a constant "c" to any observer.
Notice the last 3 words. The speed of light is constant, within the perception of any given observer.

Were there differences in the rate of motion through space of light emitted from various sources, the perception of any observer would be that the light moves at the same speed as all other light, due to the compensation factor of the perception of motion through time. The speed of light is constant in space-time.

[Tree Penguin]

I think i will have to look up general relativity. For some reason something clicked inside my brain but it's still not entirely clear to me.

Thanks!

[Doc Al]

In my opinion the speed of light shoult be seen as zero.
You are welcome to discuss your personal theories and opinions in Theory Development, but not here in the main forums. You already have a thread going on this very topic: http://www.physicsforums.com/showthread.php?t=31953

[Tree Penguin]

Everyone who can read dutch... http://home.planet.nl/~vlasm005/DreamHC/Download/website1.htm

The others will have to wait a moment.....sorry.
I'm dutch so i'll read it but your idea seems a little unbelievable to me but i'll see.