Definitions
from The Century Dictionary.
- noun An instrument for illustrating sound by means of light.
from the GNU version of the Collaborative International Dictionary of English.
- noun (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.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun An
instrument , consisting of atube with one end open and the other end covered with a thin flexiblemembrane with amirror attached to its centre, used forexhibiting upon ascreen , by means of rays reflected from the mirror, thevibratory motions caused bysounds that enter the tube.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Ancient Greek
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Examples
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she commented on the word opeidoscope
The opeidoscope consists of a tube closed at one end by a taught membrane with a small mirror attached to its center, which vibrates in response to sound entering the tube at the open end, thereby causing a spot of light reflected by the mirror on to a screen to vibrate with varying amplitude and frequency according to the intensity and frequency of the sound.
August 4, 2008