Thermophone, nach Wiborg Tonkugeln, die im Innern eine explosive Mischung enthalten, die detoniert, sobald ein bestimmter Wärmegrad erreicht ist. Die Zeit, bis der Knall erfolgt, wenn eine solche Kugel an einen heißen Ort (Ofen) gebracht wird, läßt die Temperatur des letztern abschätzen, da die Wärme um so rascher eindringt, je größer die Temperaturdifferenz zwischen Außenfläche und Innerm ist.
http://www.zeno.org/Meyers-1905. 1905–1909.
Thermophone — Ther mo*phone, n. [Thermo + phone.] 1. A portable form of telethermometer, using a telephone in connection with a differential thermometer. [Webster 1913 Suppl.] 2. A telephone involving heat effects, as changes in temperature (hence in length)… … The Collaborative International Dictionary of English
thermophone — [tɛʀmɔfɔn] n. m. ÉTYM. 1890, P. Larousse, Deuxième Suppl.; de thermo , et phone. ❖ ♦ Didact. Appareil électroacoustique dans lequel les ondes acoustiques sont produites par des variations de température … Encyclopédie Universelle
thermophone — /therr meuh fohn /, n. an electroacoustic transducer that forms sound waves by the expansion and contraction of the air adjacent to a conductor that varies in temperature according to the magnitude of the current passing through it; formerly used … Universalium
thermophone — noun A form of transducer that generates sound waves of precise power … Wiktionary
thermophone — ther·mo·phone … English syllables
thermophone — /ˈθɜməfoʊn/ (say thermuhfohn) noun a device for producing soundwaves in which an electrical conductor is heated and cooled according to the current passing through it; the soundwaves are produced by the expansion and contraction of the air around …
thermophone — ˈthərməˌfōn noun Etymology: International Scientific Vocabulary therm + telephone 1. : a portable telethermometer using a telephone in connection with a differential thermometer 2. : a telephone involving heat effects (as changes in temperature)… … Useful english dictionary
therm- — therm(o) ♦ Élément, du gr. thermos « chaud », ou thermon « chaleur ». ⇒ therme. therm(o) , therme, thermie, thermique éléments, du gr. thermos, chaud , ou thermainein, chauffer … Encyclopédie Universelle
thermo- — therm(o) ♦ Élément, du gr. thermos « chaud », ou thermon « chaleur ». ⇒ therme. therm(o) , therme, thermie, thermique éléments, du gr. thermos, chaud , ou thermainein, chauffer … Encyclopédie Universelle
termofon — termofón s. n., pl. termofoáne Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic TERMOFÓN s.n. Instrument termoacustic, folosit fie ca emiţător de sunete, fie pentru măsurarea presiunii acustice. [< fr. thermophone]. Trimis de… … Dicționar Român
