Date: Sat, 29 Oct 2011 10:20:34
Author: --- Paul Nord
Subject: Optical Trick - can someone explain?
The other evening my kids discovered a curious thing. If you look through a drop of water on your glasses at a distant light source you will see an array of curious objects floating around. I tried it myself and discovered that you always get the same set of floaters - different drop, different spot on the glasses, same floaters. It would seem that the floaters must be inside the eye, or possibly on the surface of the eye.
Can anyone have a good quick explanation of the optics involved here?