microwave

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microwave

The Columbia Encyclopedia, Sixth Edition | 2008 | The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press. (Hide copyright information) Copyright

microwave electromagnetic wave having a frequency range from 1,000 megahertz (MHz) to 300,000 MHz, corresponding to a wavelength range from 300 mm (about 12 in.) to 1 mm (about 0.04 in.). Like light waves, microwaves travel essentially in straight lines. They are used in radar, in communications links spanning moderate distances, and in other applications, such as microwave ovens . The equipment used to generate, process, and transmit microwaves is in many respects different from that used with lower frequency radio waves. See waveguide ; magnetron .

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microwave

A Dictionary of Earth Sciences | 1999 | | © A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

microwave Electromagnetic radiation which has a wavelength between 100 μm and 30 cm and frequencies between 1 GHz and 300 GHz. Microwaves lie between infrared and radiowaves. See also PASSIVE MICROWAVE.

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AILSA ALLABY and MICHAEL ALLABY. "microwave." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 19 Dec. 2009 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "microwave." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (December 19, 2009). http://www.encyclopedia.com/doc/1O13-microwave.html

AILSA ALLABY and MICHAEL ALLABY. "microwave." A Dictionary of Earth Sciences. 1999. Retrieved December 19, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-microwave.html

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