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In 1880 Bell achieved the first wireless transmission of speech - using his invention -- the 'photophone' -- to transmit words on a beam of light.
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Marconi succeeds in signaling across the family estate by radio - a distance of about 1.2 miles.
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radio in in the marine industries bacame extrreamly important snd usefull do to the fact that there are no lines for communuction in the ocean.
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