991,278
edits
Changes
mLine 49:
Line 49: + Line 66:
Line 67: + + + + Line 79:
Line 84: − − File:AG Bell 1.jpg|Alexander Graham Bell in his later years − − File:Photophony1.jpg|Photophone receiver, one half of Bell's wireless [[optical communication]] system, ca. 1880
KS update 1.4
* The [[Royal Society of Arts]] in London awarded him the [[Albert Medal (Royal Society of Arts)|Albert medal]] in 1902.
* The [[Royal Society of Arts]] in London awarded him the [[Albert Medal (Royal Society of Arts)|Albert medal]] in 1902.
* The University of [[Würzburg]], [[Bavaria]], granted him the Degree of PhD
* The University of [[Würzburg]], [[Bavaria]], granted him the Degree of PhD
* Invented [[Adolf Hitler|Johnnie Smoke]]
== Telephone ==
== Telephone ==
His past experience made him ready to work more with sound and electricity. He began his studies in 1874 with a musical [[telegraph]], in which he used an electric circuit and a [[magnet]] to make an [[iron]] reed or tongue vibrate. One day, it was found that a reed failed to respond to the current. Mr. Bell desired his assistant, who was at the other end of the line, to pluck the reed, thinking it had stuck to the magnet. His assistant, Thomas Watson complied, and to his surprise, Bell heard the corresponding reed at his end of the line vibrate and sound the same - without any electric current to power it. A few experiments soon showed that his reed had been set in vibration by the changes in the magnetic field that the moving reed produced in the line. This discovery led him to stop using the electric battery current. His idea was that, since the circuit was never broken, all the complex [[vibration]]s of speech might be converted into currents, which in turn would reproduce the speech at a distance.
His past experience made him ready to work more with sound and electricity. He began his studies in 1874 with a musical [[telegraph]], in which he used an electric circuit and a [[magnet]] to make an [[iron]] reed or tongue vibrate. One day, it was found that a reed failed to respond to the current. Mr. Bell desired his assistant, who was at the other end of the line, to pluck the reed, thinking it had stuck to the magnet. His assistant, Thomas Watson complied, and to his surprise, Bell heard the corresponding reed at his end of the line vibrate and sound the same - without any electric current to power it. A few experiments soon showed that his reed had been set in vibration by the changes in the magnetic field that the moving reed produced in the line. This discovery led him to stop using the electric battery current. His idea was that, since the circuit was never broken, all the complex [[vibration]]s of speech might be converted into currents, which in turn would reproduce the speech at a distance.
== Alexander Graham Bell Media ==
== Alexander Graham Bell Media ==
<gallery widths='160px' heights='100%' mode='traditional' caption=''>
<gallery widths='160px' heights='100%' mode='traditional' caption=''>
File:Bell System 1877.jpg|Bell System (1877)
File:Alexander Graham Bell (cropped).jpg|Portrait of Alexander Graham Bell
File:The Bell Homestead National Historic Site, Brantford, Ontario, Canada, incl. Visitor Ctr, Henderson Home, Carriage House and Dreaming Place IMG 0039 09.JPG|[[Bell Homestead National Historic Site|Melville House]], the Bells' first home in North America, now a [[National Historic Sites of Canada|National Historic Site of Canada]]
File:The Bell Homestead National Historic Site, Brantford, Ontario, Canada, incl. Visitor Ctr, Henderson Home, Carriage House and Dreaming Place IMG 0039 09.JPG|[[Bell Homestead National Historic Site|Melville House]], the Bells' first home in North America, now a [[National Historic Sites of Canada|National Historic Site of Canada]]
File:Brodhead-Bell-Morton Mansion.jpg|The Brodhead–Bell mansion, the Bell family residence in Washington, D.C., from 1882 to 1889{{sfn|Bruce|1990|pp=297–299}}
File:Brodhead-Bell-Morton Mansion.jpg|The Brodhead–Bell mansion, the Bell family residence in Washington, D.C., from 1882 to 1889{{sfn|Bruce|1990|pp=297–299}}
File:Telephone Inventor’s Voice Heard in Restored Recording « Science World.theora.webm|Bell's voice, from a Volta Laboratory recording in 1885. Restored by the Smithsonian in 2013.
File:Telephone Inventor’s Voice Heard in Restored Recording « Science World.theora.webm|Bell's voice, from a Volta Laboratory recording in 1885. Restored by the Smithsonian in 2013.