Emilio Segrè Visual Archives

More than 30,000 photos of scientists and their work

Collins Timothy F1

Share This

Share/Save

Collins Timothy F1

How will you use this image ?
Select one of the following options.
Individual Use
Not-for-profit Use
For-profit Use (educational only)
Not sure yet

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: 
Collins and White Operating Spectrometer
Credit line: 
National Archives and Records Administration (NARA), courtesy AIP Emilio Segrè Visual Archives
Description: 

Timothy Collins (left) and F.A. White (right) operating a double magnet mass spectrometer used in discovering a new, naturally-occurring, radioactive isotope of tantalum, called Tantalum-180. The discovery of Tantalum-180 provided additional information important to the overall understanding of nuclear structure. The spectrometer, designed by F.A. White, is so sensitive that it achieves complete separation of isotopes even when one type may be more than a million times more plentiful than its neighbor.

Original format: 
1 photographic print (black and white; 7 x 9.5 inches)
Person(s): 
Collins, Timother Leo
White, Frederick Andrew, 1918-