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We still use colored alcohol for our liquid in everyday thermometers.
The first thermometer was a tube filled with water and air.
A Galileo thermometer is a thermometer made of a sealed glass cylinder containing a clear liquid and a series of objects whose densities are such that they rise or fall as the temperature changes.
It's used in thermometers because it has high coefficient of expansion. also it's the only metal in a liquid state.
A mercury thermometer, that is a barometer can be used to measure vapor pressure. Initially, a proper temperature must be recorded. Then the liquid should be injected into the mercury column. This new measurement subtracted from the original will yield the vapor pressure of a liquid.
The principle is volumetric expansion of a fluid
The liquid commonly used in a thermometer is mercury or COLOURED ALCOHOL.
We still use colored alcohol for our liquid in everyday thermometers.
it is used in liquid form as in room temperature the mercury is in liquid
The first thermometer was a tube filled with water and air.
A thermometer is used to measure air temperature, or the temperature within a solid or liquid.
Mercury
iodine and Mercury
A laboratory thermometer is used to check the temperature, or changes in temperature, of an object with precise accuracy.
The liquid is an antiseptic used to sterilise it. You wouldn't want to be contaminated with any bacteria or viruses from the last person who used the thermometer, would you?
fever thermometer is used by the doctors and they are adjusted to body temperature whereas lab thermometer is adjusted to liquid temperature
iodine and mercury