ABSTRACT
As we have seen in Chapter 1, light is a transverse wave and is therefore inherently asymmetrical. Interaction of light with asymmetric materials, and at arbitrary angles, just adds to this asymmetry. In the natural environment, polarized light is primarily a result of reflection and scattering. The subject of polarized light in our environment is vast, and books have been written on various aspects of polarization in nature and the sensing of it [1-6]. In this chapter, we will necessarily limit ourselves to a few topics out of the rich array available on this subject. We will briefly describe a few effects that produce polarized light in the atmosphere, we will describe some animals that produce polarized light, and we will discuss animals that can see polarized light.
