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प्रश्न
You may have noticed that a few sharp jerks are given to a clinical thermometer before using it. Why is it done so?
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उत्तर
A clinical thermometer has a kink that prevents immediate backflow of the mercury from the tube to the bulb, thus allowing us to read the temperature conveniently. This is the reason why we give a jerk to the thermometer before taking a new reading. The jerk positions the mercury below the kink into the bulb.
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संबंधित प्रश्न
Mercury is often used in laboratory thermometers because it ______.
Digital thermometer is widely used for the measurement of the temperature due to ______.
Digital thermometers do not use ______.
All clinical thermometers have a ______ that prevents mercury from flowing back into the bulb.
Fahrenheit scale is more sensitive that the Celsius scale.
Mention the use of laboratory thermometers.
We are advised to avoid keeping the clinical thermometer in the sun or near a flame. Why?
Write a note on the laboratory thermometer.
Explain how do you determine the temperature of hot water using a laboratory thermometer?
Why is it advised not to hold the thermometer by its bulb while reading it?
