explain working principle of thermometer
Answers
A thermometer has a glass tube sealed at both ends and is partly filled with a liquid like mercury or alcohol.
As the temperature around the thermometer's bulb heats up, the liquid rises in the glass tube.
When it is hot, the liquid inside the thermometer will expand and rise in the tube.
mercury expands uniformly as temperatures up. Mercury thermometer have glass bulb and a narrow uniform glass and there is a kink between them.
When you measure a body temperature mercury goes up in the tube mercury in the glass bulb expands.
Answer:
A thermometer has a glass tube sealed at both ends and is partly filled with a liquid like mercury or alcohol. As the temperature around the thermometer's bulb heats up, the liquid rises in the glass tube.When it is hot, the liquid inside the thermometer will expand and rise in the tube.
Explanation:
Thermometers are used to measure temperature. Below is a list of some scenarios in which a thermometer might be used. - To measure body temperature during a physical exam at the doctors. - To measure body temperature when someone is ill to determine if he/she has a fever.