Microwaves
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Microwaves are longer than infrared waves and shorter than radio waves. Microwaves cause water and fat molecules to vibrate, which makes the substances hot, so we can use microwaves to cook many types of food. They can also be used for radars, speed cameras, global positioning systems, and small cell phones. Microwaves were first predicted by James Clerk Maxwell in 1864 by use of his equations. Later in 1888 Heinrich Hertz proved the existence of microwaves by building a device that produced and detected microwave radiation. Some future possibilities are to use microwaves on cars and planes to drive themselves by sending waves out and figuring out how far things are away and driving them accordingly.
Possible Dangers: Too much exposure can cause cataracts.
Possible Dangers: Too much exposure can cause cataracts.