Dictionary:Lissajous figure

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{{#category_index:L|Lissajous figure}} (le’ s∂ zhoo, or le, s∂ zhoo’) The steady pattern on an oscilloscope when periodic waves that are harmonics of a common frequency are applied to the horizontal and vertical plates. Such patterns are used to ascertain that the frequencies are exactly the ratios of small integers and to determine their relative phase relationship. Named for Jules Antoine Lissajous (1822–1880), French physicist.