6. - a form of ENERGY - UN-ORGANISED KINETIC ENERGY of particles of a substance manifests itself in the form of heat - has the ability to do WORK HEAT
7.
8. THE PROPERTY OF A SUBSTANCE SUITABLE FOR MEASURING TEMPERATURE THROUGH THEIR USE IN THERMOMETERS IS CALLED THE THERMOMETIC PROPERTY AND THE SUBSTANCE IS CALLED A THERMOMETRIC SUBSTANCE . SUCH A PROPERTY VARIES QUITE LINEARLY WITH TEMPERATURE OVER A REASONABLE RANGE OF TEMPERATURE. DEPENDING ON THE RANGE OF LINEARITY OF THE THERMOMETIC PROPERTY AND THE THERMOMETRIC SUBSTANCE USED, VARIOUS TYPES OF THERMOMETERS SUITABLE FOR MEASURING TEMPERATURE ACCURATELY OVER THE SAME RANGE ARE MANUFACTURED. THE RANGE OF LINEARITY OF THE THERMOMETRIC PROPERTY SELECTED FOR ITS USE IN A SPECIFIC THERMOMETER IS ALSO TERMED AS THE THERMOMETRIC RANGE OF THE THERMOMETER. THERMOMETRIC PROPERTIES OF SUBSTANCES
9.
10. MECHANICAL PROPERTIES LENGTH : VARIES LINEARLY WITH TEMPERATURE t = (Lt-L0)/(L100-L0) x 100 degree C Used in Liquid-in-glass thermometers PRESSURE : VARIES LINEARLY WITH TEMPERATURE t = (Pt-P0)/(P100-P0) x 100 degree C Used in Constant Volume Gas Thermometers VOLUME : VARIES LINEARLY WITH TEMPERATURE t = (Vt-V0)/(V100-V0) x 100 degree C Used in Constant Pressure Gas Thermometers THERMOMETRIC PROPERTIES OF SUBSTANCES
11. ELECTRICAL PROPERTIES ELECTRICAL RESISTANCE : VARIES LINEARLY WITH TEMPERATURE t = (Rt-R0)/(R100-R0) x 100 degree C Used in Platinum Resistance Thermometers THERMO-ELECTRIC EMF : VARIES NON-LINEARLY WITH TEMPERATURE HENCE APPROXIMATED BY A POLYNOMIAL EQUATION PECULIAR TO THE THERMO-COUPLE THERMOMETRIC PROPERTIES OF SUBSTANCES
