THE Thermometer is a temperature intake instrument Growed in different trades, cooking, industry, medicine, etc. You probably have a medical or atmosphere thermometer at home. In short, in general, the majority of human beings know the thermometer, you are most certainly part of it. Temperature measurement specialists offer you a short course on The definition and history of the thermometer could help you better understand its usefulness, its operation and its uses. Once Upon has Time… the thermometer.
The large definition of the thermometer
According to the French encyclopedia or dictionary that you are used to consulting, here is what you can find to define the thermometer:
- According to the Larousse, the definition of the thermometer simply says that it is a device intended to measure temperatures.
- The Robert goes further by giving a more complete thermometer definition: the thermometer is an instrument intended for the measurement of temperatures, generally thanks to the dilation of a liquid or a gas, such as the mercury or helium thermometer . There are also The medical thermometer which is intended to indicate the body temperature.
- Wikipedia, which is more an encyclopedia than a dictionary, offers the definition of the following thermometer: the thermometer, the old the ancient thermós ("hot") and metron ("measure"), is a device that allows you to measure and display the temperature value. It is the field of study of thermometry. Developed during the 16th and 17th centuries, the thermometer is used in different fields. The applications of professional thermometers are multiple, in meteorology, in medicine, in the kitchen, for cooking, for regulation, in Industrial processes, measurement of the outside or interior temperature of factories, etc.
THE Thermometer definitions are therefore varied from the point of view of which we place ourselves. Our experts, explain their own definition of the thermometer.
The thermometer is A temperature measurement and reading instrument. Temperature intake and its precision, in degrees Celsius or in Fahrenheit, is done via two essential components:
- A temperature sensor in which a change occurs (in the bulb of a glass mercury thermometer for example),
- A conversion tool From this change in numerical value (such as the scale of a mercury thermometer in the glass).
The thermometer is used in technology and industry to monitor processes, meteorology, food, medicine and scientific research. Its use can also be a domestic, especially to check the body temperature.
The history of the thermometer
If the thermometer allows us today to know how to dress or cook the Christmas turkey, in theAntiquity its ancestor The theroscope already observed temperature variations. In 1592, Galileo worked for example on her own research, thanks to her fortune theroscope which contained in a sealed glass tube, wine. Depending on the time of day, especially when it was colder, the air took up less space and the level of wine rose. The Galileo theroscope, based on the principle of Archimedes' thrust and the dilation of matter, was born.
In 1612, Sanctorius was inspired and diverted the work of his friend Galileo to create The medical theroscope ; The temperature measurement is the same, except that the patient must put in his mouth, a sealed glass ball. Of course, these measurement systems were very imprecise.
Forty years later, Ferdinand II of Medici, provides the theroscope of the ethanol that he dyed in red to make it visible by remaining faithful to the theroscopes, and gradually graded the Galileo glass tube allowing to quantify the temperature. The first thermometer was born.
In 1717, Gabriel Fahrenheit replaced ethanol with mercury and offered a first temperature scale, replaced almost everywhere in the world by that of the physicist André Celsius in 1742. temperature scale Widely used, you know it for having studied it in college: 100 ° corresponded to the water freezing point, and 0 ° to its boiling point.
Today, scientists from all walks of life have created different models of thermometers (graduation, probe or infrared thermometer or laser thermometer), some thermometers are digital contactless, others with tips, etc. to meet needs for individuals and For professionals.
You can follow all the advice of the experts of thermometer.eu for good Choose your thermometer, in particular according to its characteristics.
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