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What does a pyrometer measure?

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A pyrometer is a thermometer specifically designed to indirectly measure heat. Originally, a pyrometer was meant to measure the temperature of objects above incandescence by way of their visible radiation. Modern pyrometers measure thermal radiation without making direct contact with an object's surface.

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What does a pyrometer measure?
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Pyrometers are also called "radiation thermometers." The first pyrometer was actually invented by a potter to measure the temperature inside of his kilns. It was produced in 1901 and used a temporary filament placed over the object. Pyrometers are vital components of hot air balloons, certain types of steam boilers, metallurgic and salt bath furnaces, and tuyeres.

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