# Formula: Wiedemann-Franz Law Thermal Conductivity    Electrical Conductivity    Lorenz number    Temperature

## Thermal Conductivity

Unit
Thermal conductivity is the specific thermal conductivity of the conductor, which depends on the geometry of the conductor (hence "specific"). This tells how capable a conductor is of transporting heat.

## Electrical Conductivity

Unit
Electrical conductivity is the specific electrical conductivity of the conductor, which depends on the geometry of the conductor (hence "specific"). This tells how well a conductor conducts the electric current.

## Lorenz number

Lorenz number is the constant of proportionality between the temperature and the ratio of conductivities. The unit of Lorenz number is $$\mathrm{V}^2 / \mathrm{K}^2$$.

## Temperature

Unit
Absolute temperature of the considered material.

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