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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![直流电源0 – 20 V, 0 – 5 A
(230 V, 50/60 Hz), 1003312 [U33020-230], 供电器](/thumblibrary/U33020-230/U33020-230_01_140_140_直流电源0-20-V-0-5-A-230-V-5060-Hz.jpg)
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![高频接插线，长1m, 1002746 [U11255], 实验用导线和电缆](/thumblibrary/U11255/U11255_01_140_140_高频接插线-长1m.jpg)
![成对安全实验导线，75cm, 2,5 mm², 1017718 [U13816], 实验用导线和电缆](/thumblibrary/U13816/U13816_01_140_140_成对安全实验导线-75cm-2-5-mm.jpg)
![功率函数生成器（230 V，50/60 Hz）, 1009957 [U8533600-230], 信号函数发生器](/thumblibrary/U8533600-230/U8533600-230_01_140_140_功率函数生成器-230-V-5060-Hz.jpg)
![游标卡尺，150 mm, 1002601 [U10071], 长度测量](/thumblibrary/U10071/U10071_01_140_140_游标卡尺-150-mm.jpg)
![装管, 1002622 [U10146], 软管、流量管](/thumblibrary/U10146/U10146_01_140_140_装管.jpg)
![光控计时门, 1000563 [U11365], 传感器](/thumblibrary/U11365/U11365_01_140_140_光控计时门.jpg)
![Digital Multimeter P3340, 1002785 [U118091], 手持数字测量仪器](/thumblibrary/U118091/U118091_01_140_140_Digital-Multimeter-P3340.jpg)
![一套接插线，15个，长度 75 cm, 1002840 [U13800], 电循环](/thumblibrary/U13800/U13800_01_140_140_一套接插线-15个-长度-75-cm.jpg)
![两根实验导线，75 cm, 2.5 mm², 1002850 [U13813], 实验用导线和电缆](/thumblibrary/U13813/U13813_01_140_140_两根实验导线-75-cm-25-mm.jpg)
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![数字计数器（230 V, 50/60 HZ）, 1001033 [U8533341-230], 数字计数器](/thumblibrary/U8533341-230/U8533341-230_01_140_140_数字计数器-230-V-5060-HZ.jpg)
![模拟万用表 ESCOLA 100, 1013527 [U8557380], 手持模拟测量仪器](/thumblibrary/U8557380/U8557380_01_140_140_模拟万用表-ESCOLA-100.jpg)
![高频接插线,BNC/4毫米插头, 1002748 [U11257], 实验用导线和电缆](/thumblibrary/U11257/U11257_01_140_140_高频接插线-BNC4毫米插头.jpg)
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![弗兰克-赫兹实验用电源供应器（230 V，50/60 Hz）, 1012819 [U8482530-230], 电子管D](/thumblibrary/U8482530-230/U8482530-230_01_140_140_弗兰克-赫兹实验用电源供应器-230-V-5060-Hz.jpg)