| 释义 |
thermophone|ˈθɜːməʊfəʊn|
[f. as prec. + Gr. ϕωνή voice, sound, after telephone.]
An apparatus in which sonorous vibrations of a diaphragm are produced by heat-rays.
1878Th. Wiesendanger in Engineer XLVI. Nov. 335 The Thermophone. A new source of sound for the telephone. 1881A. G. Bell in Nature 12 May 44/1 We have decided to adopt the term ‘radiophone’..limiting the words thermophone, photophone, and actinophone to apparatus for the production of sound by thermal, luminous, or actinic rays respectively. 1902Sloane Stand. Electr. Dict. 537 Thermophone, an apparatus for reproducing sounds telephonically by the agency of heat; a receiving-telephone actuated by heat. |