Sound is an interesting topic for physics lessons at all ages. However, it is difficult to illustrate this ubiquitous phenomenon and many models do not adequately represent the properties of sound and thus promote unwanted conceptions. The experiment presented here avoids this by visualising sound itself with the help of the schlieren technique. For this purpose, an easily reproducible variant of a schlieren setup is presented. The simple setup is described in detail.

中文翻译：

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让声音可见——学校的简单纹影成像设置

声音对于各个年龄段的物理课来说都是一个有趣的话题。然而，很难说明这种普遍存在的现象，而且许多模型不能充分代表声音的特性，因此会产生不受欢迎的概念。这里展示的实验通过在纹影技术的帮助下可视化声音本身来避免这种情况。为此，提出了一种易于重现的纹影设置变体。简单的设置进行了详细描述。