PASCO OS-8500 INTRODUCTORY OPTICS SYSTEM - Manual (Page 28)

Introductory Optics System 012-02744K
®
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Figure 8.3 Equipment Setup
➀ Do your observations support Newton’s theory? Explain. __________________________
____________________________________________________________________.
To investigate further, setup the equipment as shown in Figure 8.2. Arrange the Cylindrical Lens so
that the three central light rays (one red, one green, and one blue) intersect at precisely the same
point on the Ray Table. Slowly move the Viewing Screen toward this point of intersection (you'll
have to remove it from its component holder).
➁ What color of light results when red, green, and blue light are mixed? How does this support
Newton’s theory? ______________________________________________________
___________________________________________________________________.
The Colors of Objects
Set up the equipment as shown in Figure 8.3. Observe the light rays that are transmitted and
reflected from the Green Filter.
➀ What color are the transmitted rays? What color are the reflected rays?
___________________________________________________________________.
Place the Red Filter behind the Green Filter (so the light passes first through the Green Filter and
then through the Red Filter). Look into the Green Filter.
➁ What color are the reflected rays now? Which rays are reflected from the front surface of the
Green Filter, and which are reflected from the front surface of the Red Filter?
___________________________________________________________________.
Place the Blue Filter over the Light Source aperture so the incident rays are blue. Let these rays
pass through the Green Filter only.
➂ What colors are the reflected rays now?
___________________________________________________________________.
➃ Based on your observations, what makes the Green Filter appear green?
___________________________________________________________________.
Green Filter
(hold in place by hand)
Transmitted
Rays
Reflected
Rays