Early positron observations, 1930s

Early positron observations, 1930s

C011/8257 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 25.5MB

Downloadable file size: 1.7MB

Price image Pricing

Please login to use the price calculator


Restrictions: Editorial use only

Caption: Early positron observations. Cloud chamber images showing tracks produced by the newly discovered positron, the antimatter equivalent of the electron. At left are tracks (white lines) produced by electrons curving to the left, while the tracks curving to the right are the positrons. They are part of a shower of particles produced by the impact of a cosmic ray, with the same shower shown in reverse at right. Observations at Caltech in August 1932 by US physicist Carl A. Anderson led to his 1936 Nobel Prize in Physics. These images, from Caltech's Chair, physicist Robert Andrews Millikan, were published in 'Atoms, Men and Stars' (1937).

Release details: Model release not required. Property release not required.

Keywords: 1900s, 1930s, 1932, 1936, 1937, 20th century, american, atoms men and stars, black-and-white, california, california institute of technology, caltech, caption, carl a. anderson, cloud chamber, cloud chamber image, cosmic ray, cosmic rays, electron, electrons, equipment, experiment, historical, history, lab, laboratory, monochrome, nobel prize in physics, north america, north american, particle, particle physics, particles, physical, physics, positron, positrons, printed, research, robert andrews millikan, shower, text, track, tracks, united states, us, usa

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.