A negative form of this phenomenon may occur when the Poynting vector dot the wavevector isnegative.
A negative form of this phenomenon may occur when the Poynting vector dot the wavevector isnegative. One quantity important in describing this phenomenon is squared in both the numeratorand denominator of one side of the Lorentz-Lorenz equation. Ordinary and extraordinary rays areobserved in anisotropic materials like calcite, in which the (*) "double" form of this phenomenonoccurs. One law used to describe this phenomenon is derived using Fermat's principle of least time. Thesines of the angles at which this phenomenon occurs are related by Snell's law to values of its namesakeindex, defined as speed of light in a vacuum divided by speed of light in a medium. For 10 points, namethis phenomenon in which passing between two media causes a wave to bend.
A negative form of this phenomenon may occur when the Poynting vector dot the wavevector isnegative.
refraction [accept birefringence due to ambiguities]