Emilio Segrè Visual Archives

More than 30,000 photos of scientists and their work

Attention ESVA patrons:

The Emilio Segrè Visual Archives’ site is moving soon and adopting an open access approach to digital image sharing. Once we have transitioned to the new site in 2021, we will no longer charge for our high-resolution digital images or usage fees (note that we do not hold copyright to all the images in our collections and you will still need to obtain permission for those which we do not own).

If you are working on a long-term project, we advise you to wait until the migration is complete so that you may obtain our copies for free. If you cannot wait, email us at nbl [at] aip.org and we will do what we can to assist you. We will not be offering refunds for past purchases.

For more information, please visit our FAQ page on the Ex Libris Universum blog. 

Brattain Walter C13

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Brattain Walter C13

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We charge a usage fee per photo if the photo is published, reproduced in a product or publicly exhibited. This is not a license in the legal sense. As a non-profit institution, we do not make any money providing these photographs. It is only by assessing usage fees that we are able to cover the cost of providing publication quality copies of our photos, preserving the photograph collection according to archival standards, and providing access to the collection by maintaining an online image database. The copyright holder may charge a fee in addition to our service fee.

Images are for use in educational projects only and must be used in a respectful manner.

Image title: 
Shockley, Bardeen, and Brattain with Equipment
Credit line: 
Photograph by Nick Lazarnick, Alcatel-Lucent/Bell Labs, courtesy AIP Emilio Segrè Visual Archives, Physics Today Collection, Brattain Collection

Left to right are William Shockley, John Bardeen and Walter Brattain working with equipment.
Original press release caption: A.M. Papers of Thursday, July 1, 1948 - "With this apparatus at Bell Telephone Laboratories, some of the first investigations leading to the discovery of the Transistor were made. Seated is Dr. William Shockley, who initiated and directed the Laboratories' Transistor research program. Standing are Dr. John Bardeen, left, ane Dr. Walter H. Brattain, key scientists in bringing the invention to reality. The Transistor's potentialities are such that Bell scientists and engineers expect it may have far-reaching significance in the field of electronics and electrical communication. It has been shown to produce amplification as high as 100 to 1 (20 decibels). Some test models have been operated as amplifiers at frequencies up to ten million cycles per second."

Photo date: 
Original format: 
3 photographic prints (black and white; 9.5 x 7.5 inches, 9 x 7 inches, 6 x 4.5 inches)
Bardeen, John
Brattain, Walter H. (Walter Houser), 1902-1987
Shockley, William, 1910-1989