We explain what a thermometer is, what it is for and who invented it. In addition, the types of thermometers and how they work.
An instrument is called a thermometer whose usefulness is to measure temperature , through various mechanisms and scales. The most common of these mechanisms was dilation, property of certain materials to expand in the face of the presence of heat, common among metals and other substances, such as alcohols .
The invention of the thermometer and its incorporation into everyday life was an important success in the technological development of medicine (clinical thermometer), since it allowed the measurement of the temperature of the human body and accurately measure symptoms such as fever .
The recorded by the thermometers is marked based on a certain temperature scale:
The thermometer is a long-standing device in human history, whose first version was called a thermoscope and invented by the Renaissance scientist Galileo Galilei: it consisted of a glass vessel that culminated in a closed sphere, which had to be submerged upside down in a mixture of alcohol and water , leaving the sphere above. As the liquid warmed, it climbed the tube.
To this invention a numerical scale was added between 1611 and 1613 (attributed to Francesco Sagredo and Santorio Santorio), thus giving rise to the first thermometers and also to thermoscopes, devices that measure the ambient temperature.
There are the following types of thermometer:
The principle governing the thermometer is simple: the device has a sensitive end, where the sensors (in the case of a digital thermometer) or the dilatable substance (in the case of mercury or alcohol thermometers) are located, and that It must be introduced into the body or the substance whose temperature you want to measure.
After waiting a few minutes, the heat of the body or the substance will bring the mercury or alcohol up to an equivalent point, on the scale recorded in the device, to the degree of heat measured.
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