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James Clerk Maxwell & Heinrich Hertz
Who are the different scientist that contributed the theory, Mary?
IS THAT SO? CAN YOU WHATS THEIR CONTRIBUTION?
SURE, NO PROBLEM!
About 150 years ago, James Clerk Maxwell, an English scientist, developed a scientific theory to explain electromagnetic waves. He noticed that electrical fields and magnetic fields can couple together to form electromagnetic waves.
AND ALSO Maxwell discovered that a CHANGING magnetic field will induce a CHANGING electric field and vice-versa.
IN OTHER HANDS, Heinrich Hertz, a German physicist, applied Maxwell's theories to the production and reception of radio waves. The unit of frequency of a radio wave -- one cycle per second -- is named the hertz, in honor of Heinrich Hertz.
Hertz proved the existence of radio waves in the late 1880s. He used two rods to serve as a receiver and a spark gap as the receiving antennae. Where the waves were picked up, a spark would jump. Hertz showed in his experiments that these signals possessed all of the properties of electromagnetic waves.
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