Regular reflection occurs when parallel rays of light hit a smooth surface and reflect off at equal and opposite angles, creating a clear and focused image. This is also known as specular reflection. Plane reflection is another term for regular reflection, referring to the fact that the surface the light is reflecting off of is flat, like a mirror. Diffuse reflection occurs when parallel rays of light hit a rough or irregular surface and reflect off in many different directions, creating a scattered and blurry image. Differential reflection is not a commonly used term and does not refer to any specific phenomenon related to the reflection of light.
