![]() ![]() More seldom used are such thermometric parameters as intensity of electric fluctuations (Johnson noise thermometer), magnetic susceptibility of a paramagnetic (magnetic T), sound velocity, broadening of spectral lines, etc. ![]() Softening temperatures of ceramics (Seger cones) Ĭhange of color with transition temperature-heat setting inks (heat sensitive compounds of fillers and solvents coated onto technical parts) Ĭhange of color at temperature transitions to a liquid-crystalline state and an isotropic liquid of some organic compounds-liquid crystals (e.g., liquid-crystalline substances of the cholesteric type).Įach indicated property may be used as a thermometric parameter in a limited temperature range. Temperature measurement by radiation intensity (optical thermocouples, see pyrometers) A volume of a liquid or a gas (liquid-in-glass and gas thermometers) Įlectrical resistance of metals, semiconductors (see resistance thermometers) electromotive force (see "thermocouples") ![]()
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