thermometer
a device to measure temperature
A thermometer is a scientific instrument that is used for measuring temperature. It consists of a narrow glass or plastic tube containing a liquid such as mercury or alcohol. When the temperature of the environment being measured increases or decreases, the liquid in the tube expands or contracts accordingly. The scale marked on the tube of the thermometer indicates the temperature value that corresponds to the level of the liquid in the tube.
There are several types of thermometers available such as digital thermometers, infrared thermometers, and bimetallic thermometers. Digital thermometers are common household items used for measuring body temperature, while infrared thermometers measure temperature without coming in contact with the object being measured. Bimetallic thermometers use two different metals which expand differently when subjected to temperature changes, producing a deflection that can be measured on a scale.
Thermometers are a vital tool in many fields such as science, medicine, industry, and weather forecasting. Proper use and maintenance of thermometers ensure accurate readings, which are important for critical applications such as cooking, medical diagnoses, and scientific research.
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