Foucault pendulumnoun [ C ]
uk/ˌfuː.kəʊ ˈpen.dʒəl.əm/us/fuːˌkoʊ ˈpen.dʒəl.əm/a pendulum (= a weight on a long rod) that can be used to show that the earth spins around
Thesaurus: synonyms and related words
Revolving, rotating and spinning
- centrifugal
- centripetal
- go round
- gyrate
- in rotation idiom
- pirouette
- rev
- rotation
- round and round idiom
- rpm
- sidespin
- span
- spin
- spin (sb) around
- swing
- swing (sth/sb) around
- tailspin
- twiddle
- wheel
- wheel round
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Astronomy