Defn: An instrument for intensifying and making audible very feeble sounds. It produces its effects by the changes of intensity in an electric current, occasioned by the variations in the contact resistance of conducting bodies, especially of imperfect conductors, under the action of acoustic vibrations.
MICROPHONIC
Mi`cro*phon"ic, a.
Defn: Of or pert. to a microphone; serving to intensify weak sounds.
MICROPHONICS
Mi`cro*phon"ics, n. Etym: [See Microphone.]
Defn: The science which treats of the means of increasing the intensity of low or weak sounds, or of the microphone.
MICROPHONOUS
Mi*croph"o*nous, a.
Defn: Serving to augment the intensity of weak sounds; microcoustic.
MICROPHOTOGRAPH
Mi`cro*pho"to*graph, n. Etym: [Micro- + photograph.]
1. A microscopically small photograph of a picture, writing, printed page, etc.
2. An enlarged representation of a microscopic object, produced by throwing upon a sensitive plate the magnified image of an object formed by a microscope or other suitable combination of lenses.