3B Scientific Basic Optics Kit (115 V, 50__60 Hz) - Manual (Page 3)

Optics / Experiment 7 Work sheet 3B STUDENT Kit
3
Analyze and explain the observations
a) How does the ray of light behave if it falls obliquely on the semicircular body?
A part of the incident light ray will be reflected. The other part is refracted and emerges from
the semicircular body at an angle.
b) How does the quotient
β
α
sin
sin
behave when the angle of incidence is varied?
The results in the measurement table are almost equal for all pairs of angles. The quotient is
thus a constant.
c) What does the quotient
β
α
sin
sin
depend on?
It depends on the material of the semicircular body.
d) What is the quotient
β
α
sin
sin
called?
The quotient is called the refractive index.
e) What is the relationship between the angle of incidence and the angle of reflection for the ray of light?
The angle of incidence = angle of reflection.