English

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Etymology

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Named after Charles Wheatstone, who devised them.

Noun

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Wheatstone's rod (plural Wheatstone's rods)

  1. (acoustics) Either of a pair of flexible rods whose periods of vibration in two planes at right angles are in some exact ratio to one another. When one end of such a rod is fixed, the free end describes through vibration the corresponding Lissajous figure.