Different Scale of Temperature
1 . Celsius Scale In this scale of temperature , the melting point ice is taken as 0 ° C and the boiling point of water as 100 ° C and space between these two points is divided into 100 equal parts
2 . Fahrenheit Scale In this scale of temperature , the melt point of ice is taken as 32 ° F and the boiling point of water as 211 and the space between these two points is divided into 180 equal parts .
3 . Kelvin Scale In this scale of temperature , the melting pouxl ice is taken as 273 K and the boiling point of water as 373 K the space between these two points is divided into 100 equal pss
Relation between Different Scales of Temperatures
Thermometric Property
The property of an object which changes with temperature , is call thermometric property . Different thermometric properties thermometers have been given below
( i ) Pressure of a Gas at Constant Volume
where p , p100 . and pt , are pressure of a gas at constant volume 0 ° C , 100 ° C and t ° C .
A constant volume gas thermometer can measure tempera from – 200 ° C to 500 ° C .
( ii ) Electrical Resistance of Metals
Rt = R0 ( 1 + αt + βt 2 )
where α and β are constants for a metal .