Expansion cloud chamber for observing the paths of α-rays. Cover and sidewall are of glass (Duran).
By compressing the attached rubber ball and then allowing it to expand, a supersaturated isopropanol-water mixture is produced in the cloud chamber. Following that, the paths of the α-rays revealed by droplet formation are visible for 1 – 2 seconds in the light of an optical lamp.
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(230 V, 50/60 Hz), 1003312 [U33020-230], Power Supplies](/thumblibrary/U33020-230/U33020-230_01_140_140_DC-Power-Supply-20-V-5-A-230-V-5060-Hz.jpg)
![Universal Clamp, 1002830 [U13255], Clamps](/thumblibrary/U13255/U13255_01_140_140_Universal-Clamp.jpg)
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![Calipers, 150 mm, 1002601 [U10071], Measurement of Length](/thumblibrary/U10071/U10071_01_140_140_Calipers-150-mm.jpg)
![Tubing, Silicone 6 mm, 1002622 [U10146], Hose, Flow hose](/thumblibrary/U10146/U10146_01_140_140_Tubing-Silicone-6-mm.jpg)
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![Digital Multimeter P3340, 1002785 [U118091], Hand-held Digital Measuring Instruments](/thumblibrary/U118091/U118091_01_140_140_Digital-Multimeter-P3340.jpg)
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![Pair of Experiment Leads, 75 cm, 2.5 mm², 1002850 [U13813], Experiment Leads and Cables](/thumblibrary/U13813/U13813_01_140_140_Pair-of-Experiment-Leads-75-cm-25-mm.jpg)
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for the experimental setup of tubes of series D, 1008507 [U191001], Electron Tubes D](/thumblibrary/U191001/U191001_01_140_140_Tube-Holder-D-for-the-experimental-setup-of-tubes-of-series-D.jpg)
![Digital Counter (230 V, 50/60 Hz), 1001033 [U8533341-230], Digital Counters](/thumblibrary/U8533341-230/U8533341-230_01_140_140_Digital-Counter-230-V-5060-Hz.jpg)
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![Tripod Stand 150 mm, 1002835 [U13270], Bases](/thumblibrary/U13270/U13270_01_140_140_Tripod-Stand-150-mm.jpg)
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(230 V, 50/60 Hz), 1012819 [U8482530-230], Electron Tubes D](/thumblibrary/U8482530-230/U8482530-230_01_140_140_Premium-Franck-Hertz-Experiment-Power-Supply-230-V-5060-Hz.jpg)