Question

Briefly describe the structure of a clinical thermometer.

Answer 1

Answer:

It has a kink which prevents the mercury to fall down on its own. The clinical thermometer consists of a glass stem on which readings are marked. The scale on the thermometer is markrd from 95 F to 110 F (35 C to 43 C). ... The stem consists of a thin capillary tube at the end of which there is a bulb containing mercury.A thermometer works on the principle that solids and liquids expand on heating. As the temperature rises, mercury expands causing it to move upwards and depict the temperature. ... As the temperature of the bulb rises, the liquid expands up the tube through the constriction.

Answer 2

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A clinical thermometer consists of a long narrow glass tube. One end of this tube is sealed and the other end has a glass bulb filled with mercury. The temperature scale is marked outside the glass tube of the thermometer.

A clinical thermometer has a kink or a constriction in the glass tube just above the mercury bulb. This kino prevents immediate backflow of the mercury from thetube to the bulb, thus allowing us to read the temperature conveniently.

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