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Tag Archives: photophone
The First Wireless Telephone
On 3rd June 1880, Alexander Graham Bell transmitted the first wireless telephone message using his newly-invented “Photophone”. The Photophone contained a flexible mirror that vibrated in response to the speaker’s voice. When sunlight was projected on to the mirror, the … Continue reading
Posted in Telecom Ramblings
Tagged 19th century, Alexander Graham Bell, history, photophone, telephone
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Pictures
In April 1892, William Gandell paid £1/11/6 for a book called “Electricity and Magnetism”. The book was almost 1,000 pages long, and described such inventions as the battery, the electric motor, the electric telegraph and the telephone. William Gandell was my … Continue reading
Tagged Alexander Graham Bell, Baudot telegraph, photophone
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