Thursday, May 26, 2011

Absolute or Kelvin Scale of Temperature

The hypothetical temperature of –273°c at which volume of gas becomes zero is known as Absolute Zero. This temperature i.e. –273°c cannot be achieved by gas under any condition in practical life, so it is theoretical i.e. hypothetical.

Lord Kelvin
suggested a new scale of temperature with –273oc as lowest temperature. The size of degree on this scale was same as on centigrade scale. Thus new scale was known as Kelvin Scale or Absolute Zero Scale. The temperature on Kelvin scale is denoted by T K or T. The zero of centigrade scale corresponds to 273K of Kelvin scale.
The Kelvin and Celsius scale temperatures are related to each other by following relation.
T=  t°c  +  273.

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