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प्रश्न
Describe a clinical thermometer. How does it differ from the thermometer used in laboratory?
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उत्तर
A clinical thermometer has a narrow stem and a long bulb filled with mercury (or alcohol). There is a small constriction in the stem above the bulb. When the bulb of the thermometer is held in the armpit or the mouth of a patient, the mercury (or alcohol) in the bulb rises in the stem.
When it is taken out of the patient’s body, the small constriction does not allow the mercury (or alcohol) from the stem to retreat into the bulb. Thus, this arrangement enables us to read the temperature of the patient’s body at ease after the removal of the thermometer from his body
The figure shows a clinical thermometer. It has a slight bend or kink in the stem just above the bulb, this kink is called the constriction which prevents the mercury from falling back all by itself. As the body temperature of a healthy person is 37°C, clinical thermometers are designed to measure temperatures between 35°C and 42°C.
Clinical thermometer
संबंधित प्रश्न
In thermometer when bulb comes in contact with hot object, liquid inside it ______.
Mercury is often used in laboratory thermometers because it ______.
The common laboratory thermometer is a ______ thermometer
What is the use of kink in clinical thermometer?
Draw the diagram of a clinical thermometer and label its parts.
State the similarities and differences between the laboratory thermometer and the clinical thermometer
A clinical thermometer is calibrated from to ______.
Before use, the mercury level in clinical thermometer should be below ______.
Name the principle which is used in a thermometer.
Figure (a–d) shows a student reading a doctor’s thermometer. Which of the figure indicates the correct method of reading temperature?
