Electro-Magnetic Radiation Introduction All objects in our universe give off light, or electro-magnetic radiation. The particle of light is called the Photon. It is characteristics of both a wave and a particle. Photons are characterized by their energy and their wavelength, or their frequency. Light can be thought of as a wave which travels at a certain velocity. The velocity of light. Like an ocean wave, or a sound wave, the light waves can change …showed first 75 words of 261 total…

…showed last 75 words of 261 total…but some penetrates and causes sunburn 3. Used in laboratories to mutate cells Optical 1. Penetrates the atmosphere and can be seen with our eyes 2. 300-100 nm 4. Colors of the rainbow 5. Sunsets White light is a mixture of all colors. Blue light has a short wave length and red light has long wavelengths Infra-red 1. Longer than red light 2. Some penetrates the atmosphere. Can be felt as heat. Radio 1. Atmosphere is transparent to radio waves. ------------------------------------------------------------------------ **Bibliography** None