Light and lenses

[Bbrooke]

I am doing a science fair project to see how the use of a fresnel lens can increase the efficiency of a solar cell...do you know any websites that do a good job of explaining exactly how a fresnel lens works in an easy-to understand manner??

[kalibader]

BBrooke,

These sites all seem to help in explaining the use of a fresnel lens. If these don't help answer your questions, please write in again with more specific questions.

http://science.howstuffworks.com/question244.htm

http://www.lanternroom.com/misc/freslens.htm

http://hyperphysics.phy-astr.gsu.edu/hb ... llens.html

http://www.michiganlights.com/fresnel.htm

http://www.terrypepper.com/Lights/close ... resnel.htm

[kalibader]

Here is one more that marries the fresnel cell with solar power.

http://www.solarnavigator.net/solar_panels.htm