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Thesaurus: thermophone

1. A portable form of telethermometer, using a telephone in connection with a differential thermometer. 2. A telephone involving heat effects, as changes in temperature (hence in length) due to pulsations of the line cur…

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  1. 1. A portable form of telethermometer, using a telephone in connection with a differential thermometer. 2. A telephone involving heat effects, as changes in temperature (hence in length) due to pulsations of the line current in a fine wire connected with the receiver diaphragm.