Question

You may have noticed that a few sharp jerks are given to a clinical thermometer before using it. Why is it done so?

Answer 1

Clinical Thermometer:

1. Clinical thermometers are used in the healthcare profession. It was created to measure the temperature of a person's body.
2. It's a long, thin glass tube with a mercury-filled bulb at the end.
3. A few sharp jerks are given to the thermometer before use to ensure an accurate reading causing the mercury level to flow into the bulb at a lower temperature than normal.

Hence, a few sharp jerks are given to the clinical thermometer for proper reading as the mercury level flows into the bulb at a lower temperature than typical.