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Any of a number of characteristic looped or curved figures traced out by a point undergoing two independent simple harmonic motions at right angles with frequencies in a simple ratio.
- ‘He obtained Lissajous figures by successively reflecting light from mirrors on two tuning forks vibrating at right angles.’
- ‘The hare is constrained to hop along the path of a Lissajous figure.’
Late 19th century: named after Jules A. Lissajous (1822–80), French physicist.
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The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.