Recent content by callejon

yes, I tried to do like that. But the piece is 2 cm thick. I did it 3 times, and I found almost in all 3 tries n=1.59. But this value seems to be very high for the refraction index of a plexiglas. On the web it's given between 1.49-1.51. So I can't be sure. Isn't there a more accurate way of...

I need to determine the refracting index of a thin piece of plexiglas. Is there a way to find the index exactly?

Has Fizeau changed the direction of the water in his experiment? If no, wenn we change the direction of the water, is it true that we get twice as much change in fringes? I mean, when we compare the fringes when there are 2 directions of water, is the change more than when we compare one...

I'm working on a modification of Fizeau's experiment in 1851 about the addition of velocities. I've derived the formula for the fringe shift. But the problem is I actually don't know what it is. I know it's the movement of the interference pattern. But it has no unite, so what is the meaning of...