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思考题 8.1)振动和波动的关系如何?简谐振动与简谐波的关系如何? 8.2)说“媒质中某处是波峰”;是不是任何时刻那里都出现波峰?波峰会不会传?如果波峰会传,试用8.1图描述它是如何传的;再描述波谷是如何传的。如嫌图不够用,可以再添几个(如t=6T/4,7T/4,…)。 8.3)能不能仿讨论图8.1的方法,自己详细讨论图3.2纵波的传播过程?再另外讨论一个振
Question 8.1) What is the relationship between vibration and wave motion? How does harmonic vibration and harmonic wave relate? 8.2) Say “wherever the medium is a crest”; does it occur at any moment there? Will the wave crest be transmitted? The summit will be transmitted, and the 8.1 trial will describe how it is transmitted; then describe how the valley is passed. If you suspect that the map is not enough, you can add a few more (eg t=6T/4, 7T/4, ...). 8.3) Can you follow the method of Fig. 8.1 in a similar way and discuss the propagation of longitudinal waves in Fig. 3.2 in detail?