当气压测验器放在处于大气压下的真空钟形容器中时,用它来演示物体处于平衡状态时,在正常空气压力下,物体会发生上翘。然后钟形容器里的空气被排出,聚苯乙烯泡沫球体就会由于空气浮力的减小而下沉。在底座上,装有平衡梁。梁的一端装有一个聚苯乙烯泡沫球体,而另一端装有可调节的平衡重物。 聚苯乙烯泡沫球体: 直径 50 mm 底座: 120×90 mm 高度:125 mm
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Inexpensive, transparent plastic vacuum chamber for basic experiments with low pressure. Hand pump integrated into base plate, bleed valve and manometer for measuring pressure down to 330 hPa.
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Inexpensive vacuum recipient made of transparent acrylic for experiments in coarse and fine vacuums. Comprises a base and vacuum cylinder with venting valve, manometer, inlet tap, entrance for contacts and rubber ring.
In addition, an ...
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This glass tube can be evacuated to compare the free falling characteristics of different objects in a vacuum. Duck feathers and plastic parts are included as falling objects.
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