The equation $$r = \frac{d}{ka}$$ represents the thermal resistance (r) of a material, where 'd' is the thickness of the material, 'k' is the thermal conductivity, and 'a' is the area through which heat is being transferred. This relationship highlights how resistance to heat transfer is influenced by the material's properties and dimensions. Understanding this equation is crucial for analyzing heat transfer processes in different materials and optimizing insulation performance.
congrats on reading the definition of r = d/ka. now let's actually learn it.