Why there is a kink only in clinical thermometer and not in labouratory thermometer?
Answers
In a clinical thermometer we can see the reading of the thermometer even after removing it from the patient’s body. This is possible because of the kink. The kink breaks the connection between the mercury in the capillary and the bulb containing it at the lower end of the thermometer. This is why we have to shake the thermometer vigorously to bring it back to the lowest level. However, a laboratory thermometer has to measure temperature change continuously. The mercury level has to go up and down continuously. So, there is no kink in a laboratory thermometer.
Answer:
This is because, while you are measuring something in the lab the temperature of whatever you’re measuring can constantly change.the kink constricts this change from happening thus no kink.