Refraction can cause optical illusions as the light waves appear to come from a different position to their actual source. The reverse is also true. A light ray speeds up as it passes from glass into ...
The incident angle can be varied from 0 to 85 degrees. (In 5 degree increments using the +-5 buttons.) The index of refraction of the first medium is fixed at n=1.00. The index of refraction of the ...