Rays -- Sun Safety and the Electromagnetic
of Electro-Magnetic Waves
information on Electro-Magnetic Waves from School-for-champions, a
non-profit educational site.
Discover Light's Mysteries
site from the Center for Science Education at UC Berkeley
Space Science Laboratory
far does light penetrate into the body?
Good graphices of
skin and effects of UV light.
How Sunburns and
Sun Tans Work http://howstuffworks.com/sunscreen.htm
Includes links to tanning, sunburn, and sunscreens (at bottom of
site) from How Stuff Works.
Environmental Protection Agency source for UV measurements around the
country. Also contains other links.
Health effects of UV light from a division of
What are Electromagnetic Waves
Explanation of the electromagnetic Spectrum from NASA