Question

why does a clinical thermometer have a king in its stem

Answer 1

So that the mercury present in it does not flows back.

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Answer 2

Answer:

A kink in the tube stops the mercury level from falling on its own. These thermometers are used in clinics by doctors, so they are also called a doctor's thermometers or medical thermometers. Most show both Celsius scale and Fahrenheit temperature scales. The scale runs from 35 degree Celsius to 42 degree Celsius.

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