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. 

Stephens William B3

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Stephens William B3

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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.

$20.00
Image title: 
William Stephenspoints out entrance hatch on cut-away version of the University of Pennsylvania's recently purchased one-million dollar 'atom smasher'
Credit line: 
University of Pennsylvania, courtesy of AIP Emilio Segrè Visual Archives, Physics Today Collection; Please request permission to publish from University of Pennsylvania, University Archives at [email protected]
Description: 

William E. Stephens, professor of physics, points out entrance hatch on cut-away version of the University of Pennsylvania's recently purchased one-million dollar 'atom smasher'. The 12-million electron volt tandem accelerator will be used for nuclear physics research.

Original format: 
1 photographic print (black and white; 10 x 8 inches)
Person(s): 
Stephens, William Edwards, 1912-