A chick hatching from an egg. The chicken or the egg causality dilemma is commonly stated as which came first: the chicken or the egg?. The dilemma stems from the observation that all chickens hatch from eggs and all chicken eggs are laid by chickens.
Unpolarized light can also become polarized when it is scattered in air (also known as Rayleigh scattering). This occurs due to the fact that the EM waves cause the electron in air to vibrate, producing radiation and causing polarization of the light.
the process by which an object in the atmosphere interferes with the movement of a light wave. It occurs when sunlight bends slightly along the boundary of the object (e. g. water droplets, ice crystals). When sunlight (or moonlight) encounters a cloud droplet, light waves are altered and interact one another.