physique chimie college lycee
KELVIN TEMPERATURE SCALE

 

KELVIN TEMPERATURE SCALE

ABSOLUTE ZERO

 

 

Description: An experimental process, carried out at low pressures to find Charles's law. The "ideal gas" here is a mixture: air.

We will see that there is a relation of proportionality between the temperature and the pressure as long as the temperature is expressed in degrees Kelvin.

It is Charles' law.

p1 / T1 = p2 / T2 (T in ° K)

 

Tk = Tc + 273

0 °C = 273,15 K

absolute zero: 0 K = -273,15 °C

 

Definition

Kelvin: The kelvin is the base unit of temperature in the International System of Units (SI), having the unit symbol K. Degree Celsius and kelvin have the same magnitude.

 

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