Advertisements
Advertisements
Question
You may have noticed that a few sharp jerks are given to a clinical thermometer before using it. Why is it done so?
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Describe a clinical thermometer. How does it differ from the thermometer used in laboratory?
In thermometer when bulb comes in contact with hot object, liquid inside it ______.
The body temperature of a healthy man is;
Heat energy transfer from ______ to ______.
Why do we use Mercury in thermometers? Can water be used instead of mercury? What are the problems in using it?
The thermometer which ranger from -10°C to 110°C is ______.
Digital thermometers are mainly used to take body temperature.
Explain how do you determine the temperature of hot water using a laboratory thermometer?
In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object. What is the reason for this rise in the level of mercury?
How does a clinical thermometer differ from the thermometer used in the laboratory?
