http://www.youtube.com/watch?v=2kBOqfS0nmE
The above link, is of a total internal refraction.
At 3.08 minutes you can see the total internal refraction.
raindrop.jpg
Above is the refraction of light in a raindrop, a picture I downloaded via the internet.
Question 1 - Why is it , that the raindrops , do not have a totally internal refraction, as in the underwater refraction. Is this because of the angle of the incident ray?.
Question 2 - When the raindrop is falling, and light is refracted through the rain drop, displaying our "rainbow", spectrum of color. Why is it that the perspective view of a ''rainbow", " stays in the same place", relative to the observer, the "rainbow doe's not move"?.
Question 3 - Can a "rainbow", be formed , by diffraction, "off a wet surface"?.