Scatter refers to the deflection of light when it interacts with a medium, typically involving fewer, more spaced-out changes, while diffusion involves numerous closely spaced interactions that collectively alter the light's path. In scattering, a single event, such as a photon hitting an electron, results in a change of direction, whereas diffusion occurs when light passes through a medium like fog, undergoing many interactions that blend together. The distinction lies in the number and proximity of interactions: scattering is less complex, while diffusion represents a cumulative effect. Understanding these concepts is crucial for grasping how electromagnetic waves behave in different environments. The conversation clarifies that while scattering can lead to diffusion, they are fundamentally different processes.
