In a simple time of flight experiment, the speed of sound is observed to travel about 5% slower inside a corrugated irrigation pipe as compared with measurements conducted in open air. Although some theoretical understanding for this retardation is provided, the focus of this paper concerns how this finding might be incorporated into an undergraduate lab activity that challenges student understanding of error analysis and its significance. We propose an inquiry-based format, recently championed by others, wherein students are challenged to decide how to resolve their observation of a slower speed in a second round of investigations.

中文翻译：

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慢声：批判性思维的本科实验室体验

在一个简单的飞行时间实验中，与在露天进行的测量相比，观察到声速在波纹灌溉管内传播的速度要慢 5%。虽然提供了对这种延迟的一些理论理解，但本文的重点是如何将这一发现纳入本科实验室活动，挑战学生对错误分析及其重要性的理解。我们提出了一种基于探究的格式，最近受到其他人的拥护，其中学生面临的挑战是决定如何解决他们在第二轮调查中观察到的速度较慢的问题。