Updated: 10/14/04
Chapter 23 Light: Geometric Optics
A. Instruction
to students:
1) Homework:
Read carefully Section 23-1 through Section 23-9.
Do the Examples from Example 23-1
through Example 23-15,
especially
Examples 23-3, -5, -6, -11, -12, and -13.
Do all multiple-choice sample problems by checking each step
of calculations.
2) Following formula and constants from Chapters
23 will be given
during the
exam #2. Practice how to use and apply them.
n =
c / v
n_1
sin (theta_1) = n_2 sin (theta_2)
1/d_0 +1/d_i = 1/f
m =
h_i / h_0 = - d_i / d_0
B. Biomedical
(and technological) application
Fiber optics and endoscopes in pp700-701.
C. Lectures
and study guideline
Very important:
Practice the use of the
mirror and lens equation for
concave and convex mirrors and converging and diverging
lenses
by drawing a ray diagram for each problem.
Learn the meaning of the terms:
angle of incidence
angle of reflection
angle of refraction
virtual image
real image
focal point and focal length
principal axis
index of refraction
total internal reflection
and critical angle
Learn
the law of reflection (p684)
the law of refraction, or
Snell's law (p697)