Thread: speed of light through anti matter

Hai,

Last night I watched some video's about 'reality', there are 6 parts, the first part is:
http://www.youtube.com/watch?v=80bvk_4QYic

In part four, after a minute, there is word about a vacuum (or empty space) not being empty; there is a rapid interaction between matter and anti matter, this causes a vacuumenergy.
That's not what I want to discuss, but the effects caused by this statement.

- If light traveles through matter (like the materials of our world), it traveles at a lower speed than c.
- It light traveles through a vacuum, the average speed is c.

So.. the speed of light through anti matter should be bigger than c, right? Because that can be the only thing ensuring the average speed of light through vacuum equals c, where both matter and anti matter are present in the same quantity's.

Anti matter is already made in the lab. What if it would be possible to make a block of this anti matter, and look through it. You would look into the 'future'. Because you'd see light from a point that hasn't reached the same observer if it wasn't looking through it, so it didn't happen in the eyes of the observer yet.

Can this be true? Or is it completely off? :P


Thank you

"antimatter" is a bit of a misnomer in this sense. It's simply made of opposing fundamental particles, that annihilate when it comes into contact with "ordinary matter".

Light travels at c always. the reduction in speed we see in a medium is because in a medium light isn't traveling "straight" and it is constantly interacting with the medium, which takes time(albeit not very much)

Thanks, I understand it, although I am a bit disappointed.. :wink: