Why is it advised not to hold the thermometer by its bulb while reading it?

AcademicPhysicsNCERTClass 7

To avoid false readings, we should not hold a thermometer by its bulb as the mercury inside the thermometer will expand due to our body temperature while holding it by its bulb. So, we should avoid holding a thermometer by its bulb.

Updated on 10-Oct-2022 13:29:46