Thermal Conductivity

**Thermal conductivity** describes how readily thermal energy passes through a material by conduction. High thermal conductivity → good thermal conductor. Low thermal conductivity → good insulator.

For a uniform slab: **P = kAΔT/L where: P = rate of energy transfer k = thermal conductivity A = area ΔT = temperature difference L** = thickness Therefore: k ↑ → P ↑ A ↑ → P ↑ ΔT ↑ → P ↑ L ↑ → P ↓