thermophonen.

/ˈθəːməʊfəʊn/

Etymology: formed as thermophil adj. + Greek ϕωνή voice, sound, after telephone n.

An apparatus in which sonorous vibrations of a diaphragm are produced by heat-rays.

ΘΚΠ

society > communication > telecommunication > other types of sound telecommunication > [noun] > apparatus

telephone1832

electrophone1864

magneto-telephone1878

thermophone1878

photophone1880

radiophone1881

teleradiophone1881

thermotelephonea1884

telegraphophone1889

theatrophone1889

hydrograph1893

sonobuoy1937

1878 Th. Wiesendanger in Engineer XLVI. Nov. 335 The Thermophone. A new source of sound for the telephone.

1881 A. 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.

1902 T. O'C. Sloane Standard Electr. Dict. 537 Thermophone, an apparatus for reproducing sounds telephonically by the agency of heat; a receiving-telephone actuated by heat.

This entry has not yet been fully updated (first published 1912; most recently modified version published online March 2018).

单词	thermophone
释义	thermophonen. /ˈθəːməʊfəʊn/ Etymology: formed as thermophil adj. + Greek ϕωνή voice, sound, after telephone n. An apparatus in which sonorous vibrations of a diaphragm are produced by heat-rays. ΘΚΠ society > communication > telecommunication > other types of sound telecommunication > [noun] > apparatus telephone1832 electrophone1864 magneto-telephone1878 thermophone1878 photophone1880 radiophone1881 teleradiophone1881 thermotelephonea1884 telegraphophone1889 theatrophone1889 hydrograph1893 sonobuoy1937 1878 Th. Wiesendanger in Engineer XLVI. Nov. 335 The Thermophone. A new source of sound for the telephone. 1881 A. 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. 1902 T. O'C. Sloane Standard Electr. Dict. 537 Thermophone, an apparatus for reproducing sounds telephonically by the agency of heat; a receiving-telephone actuated by heat. This entry has not yet been fully updated (first published 1912; most recently modified version published online March 2018). < n.1878
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