Thermometry

Mercury Thermometer

Gas Thermometer

Radiation Thermometer

Thermistor

Galileo Thermoscope

Temperature ScalesDaniel Gabriel Fahrenheit (1714)

Three Fixed PointsMixture of Ice-Water-Ammonium Chloride

Body Temperature

Anders Celsius (1742)

Two Fixed PointsIce PointSteam Point

Fahrenheit Temperature Scale

Centigrade Temperature Scale

Ice Point

Thermometric Property = Length of Column of Hg

Thermometric Property = Length of Column of Hg

Lord Kelvin

One Fixed PointTriple Point of Water

Ideal Gas Temperature Scale

Thermometric Property = Pressure of a Gasin a ConstantVolume Vessel