In physics, thermal conductivity, k, is the property of a material that indicates its ability to conduct heat. It appears primarily in Fourier's Law for heat conduction. Thermal conductivity is measured in watts per kelvin per metre (W·K⁻¹·m⁻¹). Multiplied by a temperature difference (in kelvins, K) and an area (in square metres, m²), and divided by a thickness (in metres, m) the thermal conductivity predicts the power loss (in watts, W) through a piece of material.The reciprocal of thermal conductivity is thermal resistivity.

Adeline