Prof. Williams
2.17.2020
Properties of Microwaves
Purpose Statement: The purpose of this lab was determining different properties of
microwaves. We analyzed the intensity of the wave as we increase the distance between the
transmitter and receiver, the angle of incidence and reflection, reflection through a prism and
polarization. Then we verified the recorded data, and we were able to verify them with the proper
formula for each property
V.
CALCULATIONS
Complete the graphs for intensity vs. distance and determine the mathematical
relationship
Intenisty (mA) vs. Distance (cm) Graph
12
10
y = 72.961e-0.048x
Intensity (mA) 2
0 0
10
20
30
40 50 Distance (cm)
60
70
80
90
2. Determine the relationship for the angle of reflection as a function of the angle of
incidence.
Perpendicular to surface Incident ray Reflected ray
0
e
Surface
3. Determine the index of refraction of the styrene pellets.
0=10 21290 23=90720=20 0.01+9.20.10.30
# sin # = s sin $
Refracted Beam
# =1.00
1 sin (20) = ssin.(10)
ncident Beam
sin (20) 0.342020143 1.97 sin(10) 0.173648177
Normal to Boundary of Refraction
4.
Determine the relationship for the intensity of the wave and the angle of the
polarizer.
10
Intensity (mA) as a Function of Polarizer Angle
8
6 Intensity (mA)
0
20
40
60
80
100
Polarizer's Angle (degree)
V. CONCLUSIONS/QUESTIONS
1.Answer the questions in each section.
Reflection:
1.What relationship holds between the angle of incidence and the angle of reflection?
Does this relationship hold for all angles of incidence?
The angle of incidence is equal to the angle of reflection with respect to the normal from the
point of incidence on the plane. .
This relationship does hold for all angles of incidence theoretically. However, when the angle of
incidence in this experiment was above 60, the was not exactly equal to . because at vari