Hawkins: Quasars don't show time dilation

[Oceandevi]

Don't know why it surprises some people so much that light doesn't move at c in a medium - how do they think lenses work?

Who are you referring to?

 

[JSt0rm]

a universe from nothing explained in laymen terms...

http://www.youtube.com/watch?v=7ImvlS8PLIo

very entertaining.

 

[Matthiasa]

It's negative - the expansion is accelerating.

Using that logic it could be huge but just be returning to its equilibrium point.
Unless there is no damping then it could oscillate forever.

 

[GodlessAstronomer]

Who are you referring to?

No one in particular, certainly no one in this thread. But I've heard people express amazement at the idea that scientists have "slowed light down" - something their eyeglasses have been doing forever.

 

[Oceandevi]

No one in particular, certainly no one in this thread. But I've heard people express amazement at the idea that scientists have "slowed light down" - something their eyeglasses have been doing forever.

I think most people assume that lenses just re-direct light. So that would explain the disconnect.

 

[Nox51]

they redirect light by slowing it down. Hence refraction and why lenses work. We don't assume there's a big hand pusihing the light around in the lens now do we?

 

[Oceandevi]

they redirect light by slowing it down. Hence refraction and why lenses work. We don't assume there's a big hand pusihing the light around in the lens now do we?

You are an ass. I don't have to assume that.

 

[Gibsons]

they redirect light by slowing it down. Hence refraction and why lenses work. We don't assume there's a big hand pusihing the light around in the lens now do we?

I suspect there are a few around here who do assume that. Or worse.

 

[zzuupp]

Hmmm,

Would make a good beginning to a hard sci-fi novel:

Quasars are the aftermath of an alien civilizations attempt to get the frak out of here before the eventual heat death of the universe.

But do the quasars play Jimi Hendrix?? ^_^