4.3.1: Torsional Waves

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Aug 13, 2020
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- 4.3: Other Waves
- 4.3.2: Examples of Waves

Kyle Forinash and Wolfgang Christian

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A third type of wave is a torsional or twisting wave. If you stretch a slinky out between two points and gently twist it at one end, the twist will travel down the slinky as a wave pulse. This is an example of a torsional wave. We saw two YouTube examples of bridges undergoing torsional motion in the last chapter: twisting bridge, Tacoma Narrows. These were examples of standing torsional waves.

Video/audio examples:

Transverse, longitudinal and torsional waves lecture.
Longitudinal and transverse waves on a slinky.
Animations of different wave types.
Torsion pendulum lecture demo.
Wilberforce Pendulum which converts up and down motion to twisting motion and back.

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