Cloud chamber photograph showing the conversion of a gamma ray into an electron-positron pair. Gamma rays do not leave tracks in a cloud chamber becau

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Cloud chamber photograph showing the conversion of a gamma ray into an electron-positron pair. Gamma rays do not leave tracks in a cloud chamber because they have no electric charge. But if they have enough energy, they can reveal themselves by converting into matter & antimatter, as in this case. Because they have opposite electric charge, the electron & positron curl away in opposite directions in the cloud chamber's magnetic field. Gamma rays are a very energetic form of light (electromagnetic radiation). They are also one of the 3 types of radiation emitted by radioactive materials. The photo was taken by French physicists Irene Curie & Frederic Joliot.

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Size: 4357px × 4736px
Photo credit: © I. CURIE & F. JOLIOT/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: chamber, cloud, curie, electron-positron, frederics, gamma, image, imagery, irenes, joliot, odyssey, pair, particle, particles, photo, photograph, physics, radioactivity, ray, subatomic, track, tracks