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A thermoscope is a device that shows changes in temperature. A typical design is a glass tube with an ampoule in its upper part in which the level of a column of liquid rises or falls as a function of temperature changes.
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He was an Italian doctor, being the first to use precision instruments in the practice of medicine, introducing in medical research a quantitative experimental procedure in his studies on basal metabolism.
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A mercury thermometer is a type of thermometer that is usually used to measure the temperatures of the selected material. There are many types of thermometers, but perhaps the most common are or have been those that contain a liquid inside that expands or contracts with changes in temperature. This liquid can be mercury, colored alcohol etc.
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In the year 1714 the mercury thermometer was created and it will be renewed over the years
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is a transducer formed by the union of two different metals that produces a very small potential difference (in the order of millivolts) that is a function of the temperature difference between one of the ends called "hot spot" or "hot junction" or of «measure» and the other one called «cold point» or «cold union» or of «reference» (Seebeck effect).
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A pyrometer is a device capable of measuring the temperature of a substance without the need to be in contact with it.
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Resistance thermometers or resistance thermometers are temperature transducers, which are based on the dependence of the electrical resistance of a material with temperature, that is, they are capable of transforming a variation of electrical resistance into a variation of temperature.
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The optical pyrometer is an instrument used to measure the temperature of an object remotely and without physical contact with it, taking advantage of the physical principles of the spectrum of thermal radiation emitted by any hot body.
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Digital thermometers are those that, using transducer devices, then use electronic circuits to convert the small voltage variations obtained into numbers, finally showing the temperature in a display.
The thermistor is a device that varies its electrical resistance as a function of temperature.
2001 2002 creation date approx
