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Radar, Police

RADAR speed detectors bounce microwave radiation off of moving vehicles and detect the reflected waves.

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http://hyperphysics.phy-astr.gsu.edu/hbase/sound/radar.html#c1

How Radar Works

A brief description of how Radar works. This site is part of Marshall Brain's HowStuffWorks.com.

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http://www.howstuffworks.com/radar.htm

Online Guides to Remote Sensing

A "Weather - World 2010" resource aimed at detailing how radars and satellites are used in weather surveys.

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http://ww2010.atmos.uiuc.edu/(Gh)/guides/rs/home.rxml

How does a laser measure the speed of a car?

This article from Scientific American explains how police radar guns work.

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http://www.sciam.com/article.cfm?id=ive-heard-that-the-police

While there are some radar bands from 1,300 to 1,600 MHz, most microwave applications fall in the range 3,000 to 30,000 MHz (3-30 GHz). Microwave ovens are assigned the frequencies 900 MHz and 1560 ...

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http://hyperphysics.phy-astr.gsu.edu/hbase/ems1.html#c4

How a U.S. Spy Plane Works

Facts & a brief description of how a U. S. Spy Plane works. This site is part of Marshall Brain's interesting HowStuffWorks.com. Links to many related topics e.g How Radar works.

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http://www.howstuffworks.com/spy-plane.htm

Waves

A Java applet showing two types of wave - transverse and longitudinal. Transverse waves include all electromagnetic [radio, radar, i.r., visible, u.v., X-rays], and longitudinal waves are sound waves.

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http://members.aol.com/nicholashl/waves/movingwaves.html

Space Shuttle Photographs

A collection of photos taken by space shuttle astronauts using both conventional and radar imagery, maintained by the Center for Earth and Planetary Studies. There are links to other sources of Earth ...

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http://www.nasm.edu/ceps/rpif/SSPR.html

Luis Walter Alvarez

Luis Walter Alvarez (1911 - 1988) during the war (at M.I.T.) was responsible for three important radar systems - the microwave early warning system, the Eagle high altitude bombing system, and a ...

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http://www.nobel.se/physics/laureates/1968/alvarez-bio.html

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