Emilio Segrè Visual Archives

More than 30,000 photos of scientists and their work

Johnson John Bertrand F5

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Johnson John Bertrand F5

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$20.00
Image title: 
Dr. H. Snook lectures on progress made in science durning 1927
Credit line: 
AIP Emilio Segrè Visual Archives
Description: 

Progress made in science durning 1927 is reviewed by Dr. H. Snook before New York Electrical Society, in a lecture on January 26th, this year. On the platform with Dr. Snook (center) is W.O. Osbon, (right - - demonstrating the new Westinghouse high quality loud speaker); R.J. Wensley, of Westinghouse, demonstrated his 'mechanical man' -- the Televox. J.F. Wentz (left) of the Bell Telephone Laboratories, and J.H. Rohrbaugh, (third from left) also Bell Telephone Laboratories, demonstrated the magnetic turning of atoms and the thermal noise of electrons flowing in a conductor. This latter phenomenon is called the 'Johnson effect'. Dr. J. B. Johnson, of the Bell Telephone Laboratories, its discoverer, is standing second from the left.

Original format: 
1 photographic print (black and white; 8 x 6 inches)
Person(s): 
Johnson, John Bertrand