Material Interface - GCSE Physics Definition

In GCSE Physics, a 'Material Interface' refers to the boundary where two different materials meet. At this point, the properties of materials can change, such as how they conduct heat, electricity, or allow light to pass through. Understanding material interfaces is important because it helps us learn about things like how lenses focus light, how sensors detect signals, or how insulation reduces heat loss. For example, when light moves from air into glass, it bends at the interface due to the different densities of air and glass.