Electromagnetic Waves & the Electromagnetic Spectrum. Electricity can be static, like what holds a balloon to the wall or makes your hair stand on end. . Magnetism can also be static like a refrigerator magnet. But when they change or move together, they make waves - electromagnetic waves.
At this speed they can go around the world 8 times in one second.
Notice the wavelength is
long (Radio waves) and gets shorter (Gamma Rays)
Used in microwave ovens.
(Radio Detection and Ranging)
Therefore people give off infrared rays.
Heat lamps give off infrared waves.
Thermograma picture that shows regions of different temperatures in the body. Temperatures are calculated by the amount of infrared radiation given off.
Bones and teethabsorb x-rays. (The light part of an x-ray image indicates a place where the x-ray was absorbed)