Science and Research - Research Article from UXL Encyclopedia of Water Science

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Energy of Remote Sensing

The first step in remote sensing is to have a source of energy that will be beamed toward the target. The energy comes in the form of light waves of different sizes. Like the waves in an ocean, energy waves can range from waves whose top point (crest) to lowest point (trough) are very tiny to those that are hundreds of feet (meters) long. The distance of one full wave, from crest to crest or trough to trough, is known as the wavelength. The range of waves is known as the electromagnetic spectrum.

At one end of the electromagnetic spectrum lie the tiny waves such as gamma rays and X rays. These waves tend to carry large amounts of energy and can penetrate into solid or liquid material more so than other waves. That is why X rays can pass right through skin to...

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This section contains 1,408 words
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UXL Encyclopedia of Water Science
Science and Research from UXL Encyclopedia of Water Science. ©2005-2006 by U•X•L. U•X•L is an imprint of Thomson Gale, a division of Thomson Learning, Inc. All rights reserved.
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