00:01
Question number 32 is asking us to look at the block in figure 6 .2 that has the light shining through it and measure the angles made by the light as it enters and leaves the block.
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Now, i'm going to recreate the block in figure 6 .2 here, and the light as it enters and leaves it.
00:26
This block is what we would call a refractive medium.
00:31
The light enters it this way, travels right down through the material, and then exits.
00:43
Now, as i've illustrated it, you can see that when the light enters the material, its path is bent inward, and then when it exits the material, goes back outward at a different angle.
01:01
When we measure the angle that the light went into the block, we find that we get an angle of 37 degrees to the vertical, is the way that it entered...