Revisiting the bell–jar demonstration
Revisiting the bell–jar demonstration
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重温钟罩演示
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Ma. H. P. Regaya
中科院分区：
文献类型：
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作者：
Imelda S. Caleon;R. Subramaniam;Ma. H. P. Regaya
本研究重新审视了熟悉的钟罩演示，通常用于表明声音不能在真空中传播。有人建议，通过强调不同的媒体存在于这个设置，声音传播在近真空条件下可以成为可能。通过这种方式，可以以细微的方式检查该设置中的声音传播的概念。在一项涉及高中学生的研究中，还发现该装置有助于解决与声音传播有关的一些替代概念。
The familiar bell–jar demonstration, commonly used to show that sound cannot travel in a vacuum, is revisited in this study. It is suggested that by emphasizing the different media present in this set-up, sound propagation in near-vacuum conditions can be made possible. In this way, the concept of sound propagation in this set-up can be examined in a nuanced manner. In a study involving upper-secondary students, the set-up has also been found to be helpful in addressing a few alternative conceptions related to sound propagation.