PASCO OS-8533A User Manual
Instruction Manual and
012-09200A
Experiment Guide for
the PASCO scientific
Model OS-8533A
POLARIZATION ANALYZER
Light Sensor
(not included)
Polarization
Analyzer
© 2005 PASCO scientific
Aperture
Bracket
012-09200A Polarization Analyzer
Table of Contents
Section Page
Copyright, Warranty, and Equipment Return.....................................................ii
Description .......................................................................................................1
Mounting a Rotary Motion Sensor ....................................................................1
Using the Rotary Motion Sensor ....................................................................... 3
Mounting a Light Sensor...................................................................................3
Setup for Measuring Light Intensity ..................................................................4
Verify Malus’ Law of Polarization ....................................................................5
Teacher’s Guide................................................................................................9
Technical Support ......................................................................... Inside Back Cover
i
Polarization Analyzer 012-09200A
Copyright, Warranty, and Equipment Return
Please—Feel free to duplicate this manual
subject to the copyright restrictions below.
Copyright Notice
The PASCO scientific 012-09200 Model OS-8533A
Polarization Analyzer is copyrighted and all rights
reserved. However, permission is granted to non-profit
educational institutions for reproduction of any part of the
manual providing the reproductions are used only for
their laboratories and are not sold for profit. Reproduction
under any other circumstances, without the written
consent of PASCO scientific, is prohibited.
Limited Warranty
PASCO scientific warrants the product to be free from
defects in materials and workmanship for a period of one
year from the date of shipment to the customer. PASCO
will repair or replace at its option any part of the product
which is deemed to be defective in material or workmanship. The warranty does not cover damage to the product
caused by abuse or improper use. Determination of
whether a product failure is the result of a manufacturing
defect or improper use by the customer shall be made
solely by PASCO scientific. Responsibility for the return
of equipment for warranty repair belongs to the customer.
Equipment must be properly packed to prevent damage
and shipped postage or freight prepaid. (Damage caused
by improper packing of the equipment for return shipment will not be covered by the warranty.) Shipping costs
for returning the equipment after repair will be paid by
PASCO scientific.
Equipment Return
Equipment Return
Should the product have to be returned to PASCO
scientific for any reason, notify PASCO scientific by
letter, phone, or fax BEFORE returning the product.
Upon notification, the return authorization and
shipping instructions will be promptly issued.
➤ ➤
➤ NOTE: NO EQUIPMENT WILL BE
➤ ➤
ACCEPTED FOR RETURN WITHOUT AN
AUTHORIZATION FROM PASCO.
When returning equipment for repair, the units must
be packed properly. Carriers will not accept responsibility for damage caused by improper packing. To be
certain the unit will not be damaged in shipment,
observe the following rules:
➀ The packing carton must be strong enough for the
item shipped.
➁ Make certain there are at least two inches of
packing material between any point on the apparatus and the inside walls of the carton.
➂ Make certain that the packing material cannot shift
in the box or become compressed, allowing the
instrument come in contact with the packing
carton.
Address: PASCO scientific
10101 Foothills Blvd.
Roseville, CA 95747-7100
Should the product have to be returned to PASCO
scientific for any reason, notify PASCO scientific by
letter, phone, or fax BEFORE returning the product.
Upon notification, the return authorization and shipping
instructions will be promptly issued.
Credits
This manual authored by: Dave Griffith
Phone: (916) 786-3800
FAX: (916) 786-3292
email: techsupp@pasco.com
web: www.pasco.com
ii
012-09200A Polarization Analyzer
Introduction
The PASCO OS-8533A Polarization Analyzer is designed to be mounted on the Optics Bench of the OS-8515
Basic Optics System and to be used with the Basic Optics Light Source (part of the OS-8515 Basic Optics System) and a Light Sensor such as the PASCO CI-6504A, or PS-2106 to explore polarization. When used with the
PASCO CI-6538 or PS-2120 Rotary Motion Sensor, you can measure the relationship between the light intensity transmitted through a set of polarizers and the angle of the polarizers.
Recommended Equipment
Basic Optics System (OS-8515) Light Sensor (CI-6504A or PS-2106)
Rotary Motion Sensor (CI-6538, or PS-2120)
Description
The Polarization Analyzer consists of a Polarizer Holder, an Accessory Holder with
Mounting Bracket, two Polarizers, a Retarder
and an Aperature Bracket. The mounting
bracket is permanently attached to the Accessory Holder. The mounting bracket holds a
Rotary Motion Sensor in position to measure
the angle of one Polarizer as it turns relative
to the other Polarizer. The mounting bracket
includes two thumbscrews and a plastic belt.
The thumbscrews attach the Rotary Motion
Sensor to the bracket. The plastic belt is used
with a Rotary Motion Sensor.
The Polarizers and Retarder snap into the
opening at the top of the Accessory Holder
or the Polarizer Holder. The Retarder is a
one-quarter wavelength (140 nanometer) retarder. Each Polarizer has an angular scale
near its outside edge marked in ten degree
increments with additional marks at 45, 135,
225, and 315 degrees.
Polarizer with
Groove
Accessory Holder with
Mounting Bracket
thumbscrew
storage holes
Figure 1: Polarization Analyzer Components
Polarizer Holder
plastic belt
thumbscrews
Polarizer
Retarder
One of the Polarizers has a groove on its front edge. Use
this Polarizer with the Accessory Holder. When the Rotary Motion Sensor is mounted on the Accessory Holder
bracket, you can put the plastic belt over the groove on the
front of the Polarizer and a groove on the three-step pulley on
the Rotary Motion Sensor. This allows you to measure the
angular position of the Polarizer as it turns.
Mounting a Rotary Motion Sensor
Prepare the Rotary Motion Sensor
You will need a Phillips head screwdriver with a small tip
(e.g., #1).
The Rotary Motion Sensor comes with a rod clamp
Rotary Motion Sensor
rod clamp
Remove two
screws from the
rod clamp.
Phillips head screwriver
Figure 2: Remove Rod Clamp
1
Polarization Analyzer 012-09200A
attached to one end. Use a Phillips head screwdriver to loosen the two
screws that hold the rod clamp. Remove the rod clamp and screws.
(Please put the rod clamp and screws in a safe place for future use.)
“O” ring
The Rotary Motion Sensor also comes with a rubber “O” ring in the
largest groove of the three-step pulley that is attached to the sensor’s
shaft. Remove the “O” ring from the three-step pulley and put the ring
in a safe place for future use. The sensor is now ready to mount on the
Accessory Holder bracket.
Prepare the Mounting Bracket
The bracket comes with two thumbscrews stored in threaded holes on
the side of the bracket. Remove the
Accessory Holder
two thumbscrews and set them aside for now.
The bracket also holds the plastic belt. The belt is wrapped twice around
Mounting Bracket
two semi-circular notches on the top and bottom edges of the bracket.
Unwrap the belt from the notches and set it aside for now.
plastic belt
thumbscrews
Attach the Rotary
Motion Sensor
Turn the Rotary Motion
Accessory Holder
Mounting Bracket
Figure 4: Prepare Bracket
Sensor so the three-step
pulley faces the Accessory
Holder and the threaded
holes in the end of the
sensor line up with the holes of the Mounting Bracket. Use
the two thumbscrews to attach the Rotary Motion Sensor to
the Mounting Bracket.
three-step pulley
Rotary Motion Sensor
Figure 3: Remove “O” Ring
three-step pulley
thumbscrews
Put on the Plastic Belt
Loop the bottom of the plastic belt around the three-step
pulley of the
Rotary Motion
Sensor so the bottom
of the belt is in the
large-diameter
groove of the step-
plastic belt
pulley.
Attach the Polarizer
three-step pulley
Get the Polarizer that
has the groove on its
front edge. Slip the
top of the plastic belt
into the groove on
the front edge of the
Polarizer. Snap the
Polarizer into place
Rotary Motion Sensor
Figure 6: Put on Plastic Belt
on the Accessory
Holder.
Rotary Motion Sensor
Figure 5: Attach Sensor to Bracket
Polarizer with Groove
plastic belt
Figure 7: Attach Polarizer
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