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. 

Brookhaven National Laboratory H4

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Brookhaven National Laboratory H4

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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: 
This liquid hydrogen bubble chamber photograph is the third observation of the production of a negatively charged Omega-meson
Credit line: 
Photo courtesy Brookhaven National Laboratory. For Publication Permission Request contact Jane Koropsak, BNL-Media and Communications, [email protected], Tel: 631-344-4909
Description: 

This liquid hydrogen bubble chamber photograph is the third observation of the production of a negatively charged Omega-meson. The sketch beside the photograph shows the proper assignments of a particle to each track. The paths of netral particles, which produce no bubbles in the liquid hydrogen and therefore leave no tracks, are shown by dashed lines. The presence and properties of the neutral particles are established by the analysis of the tracks of their charged decay products or the application of the laws of conservation of mass and energy, or a combination of both.

Photo date: 
circa 1964
Original format: 
1 photographic print (black and white; 10 x 8 inches)
Person(s): 
Brookhaven National Laboratory
Category: