Show your support by donating any amount. (Note: We are still technically a for-profit company, so your
contribution is not tax-deductible.)
PayPal Acct: 
Feedback: 
Donate to VoyForums (PayPal):
| [ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, [2], 3, 4, 5, 6 ] |
alexander graham bell biography Vered by Willoughby Smith in 1873. In 1878 alexander graham bell biography, one writer with the initials J.F.W. from Kew described such an arrangement in Nature in a column appearing on June 13 alexander graham bell biography, asking the readers whether any experiments in that direction had already been done. In his paper on the photophone alexander graham bell biography, Bell credited one A. C. Browne of London with the independent discovery in 1878—the same year Bell became aware of the idea. Bell and Tainter alexander graham bell biography, however alexander graham bell biography, were apparently the first to perform a successful experiment alexander graham bell biography, by no means any easy task alexander graham bell biography, as they even had to produce the selenium cells with the desired resistance characteristics themselves. In one experiment in Washington alexander graham bell biography, D.C. the sender and the receiver were placed on different buildings some 700 feet (213 metres) apart. The sender consisted of a mirror directing sunlight onto the mouthpiece alexander graham bell biography, where the light beam was modulated by a vibrating mirror alexander graham bell biography, focused by a lens and directed at the receiver alexander graham bell biography, which was simply a parabolic reflector with the selenium cell alexander graham bell biography.
alexander graham bell biography in France alexander graham bell biography, Reis in Germany and Elisha Gray in the United States. Bell's success however came through his novel ideas that electricity could be generated to "undulate' or vary in intensity as sound waves and that current could somehow be "shaped" by a practical transmitter. Bell also conceived of the idea that a single membrane or diaphragm could act like the human ear to gather the complexities of sound or speech in the air and through its vibration bring about the corresponding variations in the current flowing in the wire. In the summer of 1874 alexander graham bell biography, visiting his father at Brantford alexander graham bell biography, Bell conceived the idea that telegraphing speech was theoretically possible by means of the induced currents in the coil of an electromagnet. He was encouraged by Joseph Henry alexander graham bell biography, considered the dean of American electrical scientists for his work with electromagnetic induction alexander graham bell biography, whom Bell visited at the Smithsonian Institution. The big breakthrough came on June 2 alexander graham bell biography, 1875. When Bell and Watson were testing their ha.
alexander graham bell biography Is invention of the telephone alexander graham bell biography, he was always fascinated by technology. While a professor at Boston University alexander graham bell biography, he was also working on an invention that would allow a few sound waves alexander graham bell biography, over a single wire at the same time. After he had completed his work of simple sound waves over the wire alexander graham bell biography, he was determined to have vocal messages go over a wire alexander graham bell biography, to another destination. When he hired his assistant alexander graham bell biography, Thomas Watson alexander graham bell biography, they made this dream of vocal sound over a single wire alexander graham bell biography, become a reality. When Bell and Watson had completed the telephone alexander graham bell biography, they still were not satisfied. They were perfectionists. They then had to fix any minor or major defects of the telephone. When they both died alexander graham bell biography, the changes were left for other inventors and discoverers. Without the new inventors and discovers alexander graham bell biography, the phone would not reach long distance alexander graham bell biography, and the basic connection of the telephone would not be the same. We still would not alexander graham bell biography, although alexander graham bell biography, be this far without Alexander Graham Bell alexander graham bell biography, and Thomas A. Watson. Biography Bell wa.
|
Forum timezone: GMT-8 VF Version: 3.00b, ConfDB: Before posting please read our privacy policy. VoyForums(tm) is a Free Service from Voyager Info-Systems. Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved. |