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 2021 so that you may obtain our copies for free. If you cannot wait until 2021, 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.

Feldmann W L C1

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Feldmann W L C1

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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: 
Feldmann and Pearson Converse
Credit line: 
AIP Emilio Segrè Visual Archives, Physics Today Collection
Description: 

W. L. Feldmann (left) points out details in the ferro-electric domain pattern on a crystal of triglycine sulfate to Gerald Pearson. Patterns were formed by a new technique, using electrostatically charged powders suspended in hexane, which was developed by the two men at Bell Telephone Laboratories.

Photo date: 
circa 1958
Original format: 
1 photographic print (black and white; 9.5 x 7.5 inches)
Person(s): 
Feldmann, W.L.
Pearson, Gerald L. (Gerald Leondus)
Category: