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.

Meggers William F28

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Meggers William F28

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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: 
William Meggers shown placing the photographic plates in the holder
Credit line: 
Photo by Underwood and Underwood, Washington, D.C Photo Service, courtesy of AIP Emilio Segrè Visual Archives, W.F. Meggers Collection

Dr. W.F. Meggers of the U.S. Bureau of Standards and the newly installed apparatus which he is using in a study of the spectra of light. The studies are all recorded on photographic plates accurately focused upon a screen which separates the ray of light into the various colors. In this photograph Dr. Meggers is shown placing the photographic plates in the holder.

Photo date: 
June 15, 1927
Original format: 
1 photographic print (black and white; 10 x 8 inches)
Meggers, William F. (William Frederick), 1888-1966