Register to reply

Derivation of reflectivity

by outplayed
Tags: derivation, reflectivity
Share this thread:
May31-12, 12:39 AM
P: 1
1. The problem statement, all variables and given/known data
Considering a wave traveling in air (permittivity and permeability 1), when the wave hits the surface of a solid, there is a reflected wave back into air, and a transmitted wave into the material. Assuming the material has a permeability of 1 and the wave hits the material at normal incidence, derive an equation for the reflectivity in terms of the index of refraction of the material and extinction coefficients.

2. Relevant equations
B = √(εμ) * E where ε is the permittivity and μ is the permeability
n = √(εμ)

3. The attempt at a solution
I believe that this has something to do with the Fresnel equations, though i'm not too familiar with them. Otherwise i'm not sure where to begin with this. I don't see how to relate E and B to refractive index and extinction coefficients.
Phys.Org News Partner Science news on
FIXD tells car drivers via smartphone what is wrong
Team pioneers strategy for creating new materials
Team defines new biodiversity metric

Register to reply

Related Discussions
Reflectivity of ALuminium Foils Materials & Chemical Engineering 5
The energy of photon and reflectivity Quantum Physics 0
Reflectivity of metals and elements Atomic, Solid State, Comp. Physics 6
Reflectivity of copper Advanced Physics Homework 1
How is reflectivity of a surface determined? Atomic, Solid State, Comp. Physics 9