Question

Dispersion, absorption and refractive index:

Describe in detail the physical model that allows you to understand how the refractive index depends on the
ω frequency of the electromagnetic wave that passes through the dielectric material. explain succinctly,
a) the dispersion phenomenon for ω >> ω0 and for ω << ω0 (you must derive the
dispersion equation).

(b) the absorption phenomenon. What does an imaginary refractive index mean?

c)How do you explain (in detail) that some materials are transparent to a certain
radiation and opaque to others?

d)Explain (in detail) the phenomenon of Rayleigh's dispersion in this context.
Why does the sunlight in the sunsets become more orange?

Answer 1