Ok, I don't want no equations and stuff please. :smile:
When light travels through a medium the photons are absorbed by atoms in the medium and then a photon is given off by the atom of similiar energy, etc, this is correct?
If this is so does that mean when I look out the window that I'm...
I told him to get a particle with mass to the speed of light you'd need infinite energy and that would cost you. :rofl:
I don't know how to calculate anything with this stuff. I just read this stuff for fun. :eek:
One of my friends told me that photons would have to have mass or they couldn't exist. I told him that if they did have mass a photon would knock you on your arse and turning on a light would cost you a fortune when your power bill arrived.
Kip Thorne and Hawkings have a bet on travelling back in time.
What's that conjecture......... um........ the Time Protection Conjecture or something. Basically any time machine would destroy itself the instant you tried to use it to travel back in time. Something like that.
All particles with a rest mass greater than 0 travel at below the speed of light.
Particles with 0 rest mass only travel at light speed.
Particles with less than 0 rest mass should, if they exist, travel at only greater than light speed.
I remember reading a while ago that the fabric of space has a texture and thus would cause friction. Even in a perfect vacum a spacecraft would slow down over time due to this.
Is this an accepted theory?