Microwaves are weak on the electromagnetic spectrum. The electromagnetic spectrum is a range of all possible electrical radiation. The frequency of a wave is the number of waves per second and the frequency of a microwave is between 300 MHz and 300 GHz. The wavelength of a wave is the distance from one peak of one wave to the peak of a following wave and the wavelength of a microwave varies from one millimeter to thirty centimeters. Frequencies range from ultra high frequency to very high frequency to extreme high frequency. The microwave was discovered by Heinrich Hertz and predicted by James Clerk Maxwell. In 1864, James Clerk Maxwell theorized about microwaves until he predicted equations that would prove the existence of microwaves. In 1888, Heinrich Hertz took these equations and used them in an experiment. He made a device that produced waves and detected those waves. The experiment showed the different wavelengths of certain waves, such as the short wavelength of microwaves. The discovery of microwaves allowed its use for commercial purposes. Microwave ovens are the best example of commercial use of microwaves. Microwave ovens use microwaves at a frequency of 2450 MHz. Microwaves move and vibrate water, fats and sugars, causing the temperature of the food to increase. This type of energy is called dielectric energy. This benefits the food preparation process and everyone who buys TV dinners. Cell phones are another example of microwaves. Cell phones use an antenna and a small transmitter to connect to microwaves emitted into the air. To make cell phones more attractive to buyers, they minimized transmitters and antennas. Microwaves used in telephones allow a person to receive calls from any location, which is especially important in an emergency. Broadcast transmissions, such as cable television and the Internet, use microwaves to transmit the signal to broadcast. These two sources using microwaves allow faster communication between all regions of the world. These two sources using microwaves are the most popular means of entertainment in most of the United States. The commercial industry benefits from these products that use microwaves. Current studies are inconclusive regarding the effects of microwaves. Microwave ovens can cause eye damage. If a person presses their face on the microwave, it can cause cataracts in their eyes. The best advice to protect yourself against this effect is to stay a few feet away, according to Dr...