Light wavelengths and particles. Lights exhibit behaviors that are characteristic of both waves and particles. In this course, we will continue to refer to the wave like nature of light, which gives us the understanding of light and its ability to reflect, refract and detracts and transmits energy. This is the same for both artificial and natural light sources. light reflects in the same manner that any wave would reflect light refracts, in the same manner that any wave would refract light diffracts in the same manner as any wave would diffract. Light undergoes interference in the same manner that any way would interfere.

Light behaves in a way that is consistent with our conceptual and mathematical understanding of waves. A good understanding of the variety of behaviors, properties and characteristics of light will help you make a clear definitive solution to any given design using light. From the reflection and refraction, we can extrapolate that light does not just stop when it reaches the surface of a medium. Instead, there will be some refraction or reflection of the boundary and some transmission on to new mediums. Hence, our world is filled with light and shadow created by objects and surfaces.