PASCO OS-8532 User Manual

Instruction Sheet
for the PASCO
Model OS-8532

CONCAVE MIRROR ACCESSORY

Half-screen

Figure 1: Components

012-06528A

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$1.00

accessory holder

locking clip

Concave Mirror

Introduction

The PASCO OS-8532 Concave Mirror Accessory is de­signed to be used with the PASCO Model OS-8515 Basic
Optics System. The Concave Mirror Accessory consists
of a +50 mm focal length concave mirror and a half­screen. Both are mounted in accessory holders which fit
onto the Optics Bench that is part of the OS-8515 Basic
Optics System.

Using the Equipment

The white screen in the half-screen accessory can be ro­tated to any angle. The reverse side of the concave mirror
is also silvered (but not front surfaced) and can be used as
a convex mirror.

The concave mirror accessory and the half-screen acces­sory snap into place on the Optics Bench. To move an
accessory along the bench, grasp the base of the acces­sory holder and squeeze the locking clip inward. Continue
to squeeze inward on the locking clip as you move the
accessory to the new position. When you release the lock­ing clip, the accessory holder is held firmly in place.

position indicator

Optics Bench

Figure 2: Holder on Optics Bench

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. This 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.

Limited Warranty

PASCO scientific warrants this product to be free from de­fects in materials and workmanship for a period of one year

© 1998 PASCO scientific
This instruction sheet written/edited by: Dave Griffith

Concave Mirror for Basic Optics 012-06528A

Experiment : Focal Length of a Concave Mirror

EQUIPMENT NEEDED

– Concave Mirror – Half-Screen
– Optics Bench (from OS-8515) – Light Source (from OS-8515)

Purpose

The purpose of this experiment is to measure the focal length of a concave mirror.

Procedure

1. Mount the Light Source at one end of the Optics Bench. Place the Concave Mirror at the other end of the Optics
Bench.

2. Position the Light Source so the crossed arrow target is aimed at the Concave Mirror and the concave surface of
the mirror faces the light source.

3. Place the Half-Screen a few centimeters in front of the Concave Mirror (between the mirror and the Light
Source).

4. Move the Half-Screen closer to or farther from the Concave Mirror until the reflected image of the crossed
arrow target on the white screen is focused.

5. Measure the distance between the position indicators on the Half-Screen and the Concave Mirror.

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BEFORE CHANGING BULB.

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DISCONNECT POWER

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WITH FINGERS.

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DO NOT TOUCH BULB

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BULB: 12V 10W G-4

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POWER SUPPLY JACK

12V @ 800mA

INSTRUCTION MANUAL.

TO REPLACE BULB SEE

GENTLY SPREAD BRACKET.

TO REMOVE LIGHT SOURCE

Light Source

crossed arrow target

example: image on

Half-Screen

Half-Screen

Concave Mirror

Optics Bench

Figure 3: Experiment Setup

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012-06528A Concave Mirror for Basic Optics

Questions

1. How does the measured distance compare to the focal length of the Concave Mirror?

2. How might you determine the focal length more accurately?

3. What is the orientation of the image of the crossed arrow target compared to the target itself?

4. How does the size of the image of the crossed arrow target compare to the target itself?

Technical Support

Feedback

If you have any comments about the product or manual,
please let us know. If you have any suggestions on alter­nate experiments or find a problem in the manual, please
tell us. PASCO appreciates any customer feedback. Your
input helps us evaluate and improve our product.

To Reach PASCO

For technical support, call us at 1-800-772-8700 (toll-free
within the U.S.) or [phone].

fax: [phone]
e-mail: [e-mail]
web: www.pasco.com

Contacting Technical Support

Before you call the PASCO Technical Support staff, it
would be helpful to prepare the following information:

• If your problem is with the PASCO apparatus, note:

Title and model number (usually listed on the
label);

Approximate age of apparatus;
A detailed description of the problem/sequence of

events (in case you can’t call PASCO right away,
you won’t lose valuable data);

If possible, have the apparatus within reach when
calling to facilitate description of individual parts.

• If your problem relates to the instruction manual, note:

Part number and revision (listed by month and year
on the front cover);

Have the manual at hand to discuss your
questions.

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