What Is Radar and Its Application?
The word radar is an acronym for Radio Detection And Ranging created in 1942. This acronym replaced the British initials RDF (Radio Direction Finding). The word is now...
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How Do Bats Fly in the Dark?
How Do Bats Fly in the Dark? A bat can fly in total darkness and yet never bump into anything. The bat has a built-in radar system. As it flies through the dark, it...
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