Stick the thermometer in what you would like to measuse. Wait a while, then take the thermometer out and read where the lines match up.
Is a device used to measure temperature or temperature gradient using a variety of different principles.
Mercury thermometers are rarely used, except in lab thermometers. For human use, they have been replaced by dyed alcohol glass thermometers, or electronic digital thermometers.
When you need them.
Doctors use body temperature thermometers to measure body temperature.
thermometers
no
how do meteorologist use thermometers
Some thermometers use mercury, in these the liquid is silvery. Some thermometers use a red dyed alcohol solutioin.
Achohol, usually. Older thermometers use mercury, but that is too dangerous.
We ca use thermometers, thermocouples, resistance thermometers, pyrometers etc.
thermometers
As a temp. indicator in thermometers.
To read temperature...