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pyrometer |
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pyrometerAny instrument used for measuring high temperatures by means of the thermal radiation emitted by a hot object. In a radiation pyrometer the emitted radiation is detected by a sensor such as a thermocouple. In an optical pyrometer the colour of an electrically heated filament is matched visually to that of the emitted radiation. Pyrometers are especially useful for measuring the temperature of distant, moving, or inaccessible objects. |
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But that it might act with regularity, the apparatus must be kept in perfect order; so each morning Michel visited the escape regulators, tried the taps, and regulated the heat of the gas by the pyrometer. |
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