| 31. | "' SWEEPNIK "'was a device designed by Otto Frisch that used a sweeping laser to follow bubble chamber tracks.
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| 32. | Cloud chambers work on the same principles as bubble chambers, but are based on supersaturated vapor rather than superheated liquid.
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| 33. | Before he retired he designed a device, SWEEPNIK, that used a laser and computer to measure tracks in bubble chambers.
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| 34. | In 1957 McCormick accepted a post as staff physicist at the Alvarez Hydrogen Bubble Chamber Group at the Lawrence Berkeley Laboratory.
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| 35. | In 1968 he joined the BEBC project and worked on bubble chamber physics until 1984 when the project was eventually terminated.
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| 36. | The bubble chamber was filled with 1150 litres of liquid hydrogen and was expanded by a piston placed at the top.
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| 37. | While bubble chambers were extensively used in the past, they have now mostly been supplanted by wire chambers and spark chambers.
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| 38. | The muons can be easily detected by many types of particle detectors, such as cloud chambers, bubble chambers or scintillation detectors.
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| 39. | The huge Gargamelle bubble chamber photographed the tracks of a few electrons suddenly starting to move, seemingly of their own accord.
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| 40. | The bubble chamber similarly reveals the tracks of subatomic particles, but as trails of bubbles in a superheated liquid, usually liquid hydrogen.
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