Thus, according to Maxwell, light waves are
associated with changing electric and magnetic fields; changing electric
field produces a time and space varying magnetic field and a changing
magnetic field produces a time and space varying electric field The
changing electric and magnetic fields result in the propagation of
electromagnetic waves (or light waves) even in vacuum In this chapter we will first discuss the original formulation of the
Huygens principle and derive the laws of reflection and refraction In
Sections 10