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. 

Lawrence Ernest Orlando D2

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Lawrence Ernest Orlando D2

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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: 
Cyclotron gathering in Berkeley
Credit line: 
Lawrence Berkeley National Laboratory, courtesy AIP Emilio Segrè Visual Archives

Left to right: Ernest Lawrence, Arthur Compton, Vannevar Bush, James Conant, Karl Compton, and Alfred Loomis gathered at the University of California, Berkeley in April 1940 to discuss the construction of a proposed giant cyclotron (184 inch). Later that month, they received a Rockfeller Foundation grant of $1,150,000 for the project.

Photo date: 
April 1940
Original format: 
3 photographic prints (black and white; 10 x 8 inches)
Bush, Vannevar, 1890-1974
Compton, Arthur Holly, 1892-1962
Compton, K. T. (Karl Taylor), 1887-1954
Conant, James Bryant, 1893-1978
Lawrence, Ernest Orlando, 1901-1958
Loomis, Alfred L. (Alfred Lee), 1887-1975