harmonograph

English edit

A harmonograph

English Wikipedia has an article on:

harmonograph

Etymology edit

harmony +‎ -o- +‎ -graph

Noun edit

harmonograph (plural harmonographs)

A mechanical device that uses a combination of pendulums to generate an image based on Lissajous curves.

Translations edit

mechanical device

Italian: armonografo m
Spanish: armonógrafo m

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