Please tell me that - In ordinary thermometer doesn't have constriction?
Answers
⊕ Constrictions present in a thermometer are used for the following
О Constrictions prevent the level of the thermometric liquid to suddenly fall after measuring the temperature.
О The constriction hence conserves the reading of the thermometer for a certain period of time after which it falls .
О This allows the user to get enough time to read the readings of the level of the thermometer.
Θ Constriction are not present in lab thermometers
ОThe absence of constrictions help to measure the temperature readings accurately .
О In a laboratory the thermometer is generally required for measuring different instances of a chemical reaction
О The chemical reaction may change the temperatures very abruptly.
О Thus constrictions should interrupt the accurate and rapid changes in the thermometer.
О This also helps to read temperature in liquids because the temperature should rapidly change in such a case.
→ That's why constrictions are not present in laboratory thermometer
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