Consider light of free-space wavelength 1300 nm traveling in pure silica medium.
Calculate the phase velocity and group velocity of light in this medium. Is the group
velocity ever greater than the phase velocity?
What is the Brewster angle (the polar
Lenses and lens combinations
September 7, 2015
Some questions to get us started:
1. A single lens will focus light, so why do high performance cameras use tens of
2. Can a cell phone camera achieve the same quality as an SLR (single