How to Bend fiber optic light in water
Whether you're bored out of your mind or a budding scientist, this is one cool experiment to do at home. This science tutorial teaches you how to bend fiber optic light in water using a 532 nm, 50 mW laser.
The point of this experiment is to find out that water has excellent internal reflective properties. And, if nothing else, these streams of light look really cool, especially in the dark.