Photophone, Bell

Alexander Graham Bell believed the photophone, not the telephone, was his greatest invention. His photophone carried the spoken voice by reflected sunbeams instead of wire, but did not find any practical application a century ago. Because light has 20,000 times shorter frequency than microwaves, it can carry 20,000 time more information. Only since the onset of ( plastic ) computers has this ability been needed. It would seem that Alex Bell was ahead of his time. 

In 1880, the first wireless communication device, the photophone, was developed by Alexander Graham Bell. Guglielmo Marconi, an Italian... 

In 1880, Alexander Graham Bell and American inventor Charles Tainter completed the first telephone conversation, using a wireless phone called the photophone. 

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