What is the phenomenon of refraction, and how does it relate to the research conducted by Dr. Fredy Zypman?
Refraction is the phenomenon where light changes speed and direction as it moves from one substance to another. This bending of light is a consequence of light slowing down as it crosses the boundary from air to another medium, causing it to refract. Dr. Fredy Zypmans research paper, Permittivity from First Principles, delves into the explicit connection between refraction and its atomic origin, proposing a mathematical model to gain physical insight into permittivity, a property related to refraction.