The amount of heat conducted in one second through one cubic meter of a substance whose two opposite faces are maintained at the temperature difference of one degree centigrade is called Thermal conductivity.
Ability to conduct heat is known as thermal conductivity.
It is denoted by “K”.
Unit of thermal conductivity is J/m.K.sec OR watt/m.K.
EXPRESSION FOR THERMAL CONDUCTIVITY
Experiments indicate that the amount of heat conducted through a solid block is: