This preview shows page 1. Sign up to view the full content.
EE119 Discussion Section 1
(01/25/10)
Professor: Jeff Bokor
TA: Xi Luo
Example Problems
1.
Light as Wave – Hecht 3.1
consider the plane electromagnetic wave (in SI units)
given by the expression E
x
= 0, E
y
= 2cos[2
π
× 10
14
(t – x/c) +
π
/2], and E
z
= 0.
What are the (a) frequency, angular frequency, (b) wavelength, wavevector
(propagation constant), (c) direction of motion, (d) phase velocity, initial phase
angle, (e) amplitude and the polarization of the wave?
2.
Light as a Particle
– the room light in a classroom with average power of 5
μ
W
hitting a detector that has an area of 1 cm
2
. How many photons are hitting the
detector per second if they are all red photons (
λ
= 700nm)? How many if they are
all violet photons ((
λ
= 400nm)?
3.
Reflection, Refraction and Total Internal Reflection
– Prof. Bokor throws you
out of a helicopter into a sea of unknown liquid with only a protractor in hand. He
then flies away to an angle of 49°, relative to the surface normal. You dive
This is the end of the preview. Sign up
to
access the rest of the document.
This document was uploaded on 09/05/2010.
 Spring '09
 Electromagnet

Click to edit the document details