Speculum
Mundi
Mirror
of the
world		Picture Credits
Antimatter Particle Creation
Title: Antimatter Particle Creation
Picture of: Antimatter Creation in a Cloud Chamber
Produced by: Reported as "Image courtsey of Fermilabs"
Web Site Source: The Particle Adventure
Web Page Source: The Particle Adventure - Antimatter Page
Web Site Owner: The Particle Data Group - LBNL
ID Number: WP0034220
Caption Source: The Particle Adventure - Antimatter Page

But you can see evidence for antimatter in this early bubble chamber photo. The magnetic field in this chamber makes negative particles curl left and positive particles curl right. Many electron-positron pairs appear as if from nowhere, but are in fact from photons, which don't leave a trail. Positrons (anti-electrons) behave just like the electrons but curl in the opposite way because they have the opposite charge. (One such electron-positron pair is highlighted.)
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