There are seven types of classes in the Electromagnetic Spectrum. Gamma rays, ultraviolet rays, visible light, microwaves, radio waves, X-rays, and Infrared waves. I will tell you about them in order of smallest frequency to highest frequency.

Radio waves have the lowest frequency of all the waves, and is used mostly for communication, but we designed a radio wave telescope that ran differently than normal telescopes.

Slightly smaller wavelength than radio waves, which can be as long (or longer) than a football field, microwaves can be measured in centimeters! Microwaves are good for sending information to different places because they can go through rain, snow, haze, sleet, and hail and not be stopped. Microwaves help with the weather people using radar. Radar is an abbreviation of "Radio detection and ranging". It's also useful for viewing Earth's surface since rain, snow, sleet, etc., won't impact the waves.

Infrared waves have several wavelengths, varying from closer to microwaves, to closer to visible light waves. There are "far" and "short" waves in infrared waves. The far waves are the ones you can feel that come from the sun, heater, or any other type of heat you may get access to. Short infrared waves, on the other hand, cannot be felt and are usually used by the television remote to send signals to the television when you get tired of your show.

Visible light can be see by the human eye without any special cameras or equipment. The waves we see are the colors of the rainbow (Red, orange, yellow, green, blue, indigo, and violet). Red has the biggest wavelength, and violet has the shortest.

This is the "UV Rays" that your sunscreen is always warning you about when you're trying to relax on summer vacation. They're quite the trouble-maker, giving people sunburns and such. But they also help us see in space, so I guess they aren't all *that* bad...

These are the things that help doctors discover tumors, breaks and fractures when you think there's something wrong with you. But, when you get an x-ray done, there is a slightly greater chance that you will get cancer later in life and you might develop skin burns and cataracts because of the high level of radiation the waves emit.

Smallest of all the waves, smallest wavelength, greatest frequency! Created by the hottest places in the universe, and are little, tiny killers! ... Good killers though! They can kill living cells, and come from radioactive atoms and nuclear explosions. Doctors use these rays to kill cancerous cells! Also there are these things called "Gamma ray bursts" and they are basically like someone used one of those dial light switches, and start out slow, then turn it as bright as it can go, then turns it off in a matter of seconds. Very fast flashes of light, that occur very often.