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Mercury does not fall or rise in a clinical thermometer when taken out from the mouth because of the KINK present in it.
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The kink stops the mercury from falling, giving the user/reader of the thermometer time to read the highest temperature recorded. Shaking the thermometer lets the mercury fall again.
The kink at one end of the thermometer will helps us to read the temperature frequently. P. bhanusree Jhonson grammar school, hyd
So the working fluid doesn't flow back into the bulb when the it is removed from the heat source. This makes a clinical thermometer "sticky"; it retains the reading of the highest temperature experienced until it is "reset" by shaking.
So the working fluid doesn't flow back into the bulb when the it is removed from the heat source. This makes a clinical thermometer "sticky"; it retains the reading of the highest temperature experienced until it is "reset" by shaking.
A clinical thermometer is a thermometer people use to check the average humans body temperature.
The liquid in a clinical thermometer is often mercury. But there are thermometers that use a coloured alcohol.
hfth
the temparature of the liquid must be read while the thermometer is in the liquid.since the level of mercury drops as soon as the thermometer is taken out of the liquid ,therefore no need of the kink in thermometer.