00:01
All right, so let's say we have polarized light, or sorry, unpolarized light, striking a surface at a certain angle, and it comes out, it comes out of this polarized.
00:16
And so we want to know what's the angle of, sorry, what is the incident angle, we're told, is 54 .6 degrees.
00:26
You want to know what's the index of a fraction, and this is air up here, so presumably this is one.
00:32
So what we'll have is our brewster's angle is going to be, or the tangent of brewster's angle, is going to be just the ratio of these.
00:42
So the index of a fraction of the material over one, so basically just in.
00:46
And so if we take the tangent of 54 .6, this means in is going to be 1 .407...