Photo Researchers ftp March 2011
EN_00958165_4547
Image from a hydrogen bubble chamber showing the annihilation of an antiproton (vertical line entering at bottom) and a proton. The annihilation event has occurred at the intersection point just above the center. Only charged particles leave tracks in such chambers; the passage of neutral particles has to be inferred from these data. Spiral tracks are due to low-energy electrons and positrons. In modern, extremely high-energy particle experiments the bubble chamber has been supplanted by electronic detectors.
2011-03-23
EAST NEWS
Science Source
Science Source
BR4051
2,98MB
20cm x 37cm by 300dpi
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