For rapid communication between distant exploring or surveying stations, tbe photophone also promises to be serviceable. Another result of Mr. Bell's researche, in this connection is the discovery ...

Turns out the photoacoustic effect was known as early as 1880 while Alexander Graham Bell was working on his photophone which used sunlight to transmit speech. That device had a receiver that used ...

Like Bell's photophone, the purpose of fiber optics is to convert a signal to light, move the light over distance, and then reconstruct the original signal from the light. The equipment used to do ...

In his Hitchcock biography, The Dark Side of Genius: The Life of Alfred Hitchcock, writer Donald Spoto documents that when producer John Maxwell called Hitchcock into his office at British ...

The global free space optics (FSO) communication market size is anticipated to grow from USD 1115.56 million to USD 16603.78 million in 10 years. The market will experience rapid growth due to ...