Emilio Segrè Visual Archives

More than 30,000 photos of scientists and their work

Willner Steven F1

Share This


Willner Steven 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.

Edwin F. Erickson
Image title: 
Steve Willner, Tom Soifer and Bob Walker working with a spectrometer
Credit line: 
NASA, courtesy of AIP Emilio Segrè Visual Archives, Erickson Collection

Steve Willner (University of California at San Diego), Tom Soifer (Caltech), and Kuiper Airborne Observatory (KAO) telescope technician, Bob Walker, 1979. The UCSD 4- to 8-micron circular variable filter spectrometer they used detected unidentified 6.2- and 7.7-micron features, now known as polycyclic aromatic hydrocarbons (PAH) molecules.

Photo date: 
circa 1979
Original format: 
1 digital image/jpeg (RGB; 834 KB)
Willner, Steven Paul
Soifer, B. T.