Question

State similarities and differences between the laboratory thermometer and the Clinical Thermometer..!!!

Answer 1

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Similarities :

(I) Working principal of both the thermometer is same.
(ii) The bulbs of both the thermometer Mercury in them.

Difference:

(i) The temperature range of clinical thermometer is from 35°c to 42°c while that of laboratory thermometer is form
-10°c to 110°c .

(ii) Clinical thermometer is used to measure the temperature of a human body.

(iii) The least count of both the thermometer cannot be tilted, laboratory thermometer is kept upright while reading the temperature values .


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Answer 2

The clinical thermometer is a specially designed and calibrated thermometer to measure our body temperature search thermometer is known as clinical or doctors thermometer. The clinical thermometer differ from an ordinary laboratory thermometer in two respects :

(i) It is calibrated from 35°C – 42°C only. This is so because this is the range over which the temperature of the normal human body can vary.

(ii) It has a slightly bend or king in Its capillary tube. This king is given the name 'Constriction'.

The Constriction ensure that the Mercury thread does not fall back by itself after this thermometer has been used to measure the temperature of a person which can read the temperature of a person and therefore can be taken conventienly. This would not be the case if any ordinary laboratory thermometer was used for this purpose. Whereas The laboratory thermometer is used for measuring the temperature that the substance is in which degree , it is calibrated from -10° – 110°.