Below is a still of a computer screen that shows a translated image produced by Doppler radar of Hurricane Frances in September 4th, 2004 making landfall in Florida. Doppler radar is a method of producing images by making use of the Doppler effect as waves are sent through and bounce back to a radar. The variation of the returning wave's frequency gives information based on, in this instance, a hurricane's location, density and traveling speed among other things.
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