Opeidoscope O*pei"do*scope, n. [Gr. ?, ?, voice + e'i^dos form + -scope.] (Physics) An instrument, consisting of a tube having one end open and the other end covered with a thin flexible membrance to the center of which is attached a small mirror. It is used for exhibiting upon a screen, by means of rays reflected from the mirror, the vibratory motions caused by sounds produced at the open end of the tube, as by speaking or singing into it. --A. E. Dolbear. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • opeidoscope — instrument for illustrating sound by means of light Scientific Instruments …   Phrontistery dictionary

  • opeidoscope — opei·do·scope …   English syllables

  • opeidoscope —   n. instrument showing sound vibrations by vibrating mirror …   Dictionary of difficult words

  • opeidoscope — ōˈpīdəˌskōp noun Etymology: Greek opa (accusative) voice + eidos form + English scope more at voice, idol : an instrument consisting essentially of a tube across one end of which is stretched a thin flexible membrane bearing a small mirror and… …   Useful english dictionary

  • Amos Dolbear — Amos Emerson Dolbear (November 10, 1837 ndash; February 23, 1910) was an American physicist and inventor. His patents interfered with Guglielmo Marconi s planned activities in the US. Dolbear researched electrical spark conversion into sound… …   Wikipedia

  • Scientific Instruments — Have you ever been in the middle of a class lecture, medical examination or episode of Star Trek only to realise suddenly that you have no clue what all those gizmos, gadgets and other scientific instruments actually do? If so, your problems are… …   Phrontistery dictionary

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