Microwaves are a form of what is known as EM (electromagnetic) energy. They are invisible up-and-down waves of both magnetism and electricity. There is a whole range of these waves, known as the EM spectrum. The longest, with individual waves many yards or even miles long, are called radio waves. Microwaves are each about 0.5-39in (1-100cm) long.
Much, much shorter, with waves only millions of a foot long, are visible light rays. These are the only electromagnetic waves we can see. Next shortest are the ultraviolet waves, and then X rays and gamma rays. All these waves travel at the speed of light, about 186,000mi (300,000km) per second.
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| Author: varun sharma 06 Jun 2008 | Member Level: Diamond Points : 0 |
nice information...
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| Author: Lenin 06 Jun 2008 | Member Level: Diamond Points : 2 |
i studied ECE, after reading once again my semester memories of that subject, lab, mischieves we done are oscillating before my mind.
Thanks for reminding my college days
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