The word "thermometer" is etymologically derived from two Greek words, namely: "thermos" (which means hot) and "metron" (which means measure). Having established the above, the instrument used to measure the temperature is called a thermometer. It is a very useful instrument, it allows knowing the temperature thanks to a graduated scale.
A thermometer can have as many uses as the temperature of the environments and bodies we want to measure. Thus there are thermometers for room temperature, water temperature, food temperature, liquid and chemical temperature, etc.
The first subdivision is going to be between analog thermometers and digital thermometers.
-Analog thermometers are formed by a column or capillary with liquid, among which alcohol and formerly mercury stand out. The liquid inside the capillary tube contracts or expands depending on the ambient temperature (rises or falls in the column). The lateral measurement scale indicates the temperature value that is recorded at that time. We find thermometers that measure the instantaneous temperature (at that time) and others that record the instantaneous temperature and also the maximum and minimum.
-Digital thermometers incorporate a piezoelectric sensor, which is the one that will measure the temperature. The sensor or probe captures the ambient signal and the instrument displays it on the screen. Digital models can also incorporate memory to record and save maximum and minimum values.
At RAIG we have chosen for you this selection of thermometers of the best quality and brands:
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