describe how do we use a chemical thermometers
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Answer:
A clinical thermometer is a sensitive Fahrenheit scale thermometer. For measuring the temperature of the human body this thermometer is extensively used. For this reason, this thermometer is called clinical thermometer or doctor’s thermometer
Clinical thermometers are meant for clinical purposes. It is developed for measuring the human body temperature. It is a long narrow glass tube with a bulb containing mercury at the end. The normal human body temperature is 37˚C; which can fluctuate between the ranges 35˚C to 42˚C. Hence, the clinical thermometers have the range 35˚C to 42˚C. The level of mercury tells our body temperature in ˚C. Since mercury is a toxic element, thus these thermometers have been replaced by digital thermometers nowadays.
- The thermometer is washed with water at a normal temperature.
- The thermometer is then kept under the tongue or under the arms in order to get the reading on the thermometer.
- The thermometer is then held close to the eye as shown in figure 3 in order to see the correct reading.