Question
How do thermometers work? I have already looked on Google and I cant find anything! Please help me!
Answers
Princess Anna
Well, Thermometers work on the principle that the volume of a liquid increases as it is heated and decreases as it is cooled.
The bulb thermometer contains a fluid, usually mercury, which expands when it is heated.
The bulb thermometer contains a fluid, usually mercury, which expands when it is heated.
Anonymous
Yes, the liquid expands when temperatures increase. Nowadays, though, mercury is not allowed to be used. Other substances which work like mercury are used.
home.howstuffworks dot com/therm1.htm
home.howstuffworks dot com/therm1.htm