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Article: Electromagnetic Spectrum
- Article from:
- Encyclopedia of Espionage, Intelligence, andSecurity
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CopyrightCOPYRIGHT 2004 The Gale Group Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Electromagnetic Spectrum
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LARRY GILMAN
The electromagnetic spectrum consists of all the frequencies at which electromagnetic waves can occur, ordered from zero to infinity. Radio waves, visible light, and x rays are examples of electromagnetic waves at different frequencies. Every part of the electromagnetic spectrum is exploited for some form of military, security, or espionage activity; the entire spectrum is also key to science and industry.
Basic Physics
Electromagnetic waves have been known since the midnineteenth century, when their behavior was first described by the equations of Scottish physicist James Clerk Maxwell (1831
–
1879). Electromagnetic waves, ...
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Article: Japanese Inventors Develop Electromagnetic Waves ...
US Fed News Service, Including US State News;
October 5, 2007 ;
474 words
... ... Takatsuki, Japan, have developed an electromagnetic waves energy converter. According to ... for converting given energy into electromagnetic waves and radiating the waves, and a ... portion for suppressing some of the electromagnetic waves (e.g., infrared rays), which ...
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