PASCO OS-8470 User Manual
®
Basic Optics Light Source
OS-8470
Instruction Sheet
012-09517B
Included Equipment Part Number
Basic Optics Light Source OS-8470
Universal AC Adapter 540-072
Spare Bulb (stored under access cover) 526-035
Introduction
The OS-8470 Basic Optics Light Source is suitable for a variety of experiments and demonstrations. You can place it in
three different orientations on a tabletop or mount it on a
PASCO Basic Optics Bench or Dynamics Optics Carriage. It
functions as a bright point source, an illuminated
crossed-arrow object, a primary-color source, and a ray box
with up to five parallel rays.
Equipment Setup
Power
Connect the included universal AC adapter to the light
source’s power port. Plug the adapter into a power outlet (100
to 240 VAC).
Optics Bench or Carriage Mounting
Press down
Release lever
Tabs
To mount the light source on a Basic Optics Bench, place it
vertically on the bench and press down; the outer tabs of the
light source snap into the side slots of the bench. (Attach the
light source to a Dynamics Optics Carriage in the same way.)
Marks on the tabs indicate the horizontal positions of the point
800-772-8700 www.pasco.com
Model No. OS-8470 Equipment Setup
source and object screen. To detach the light source, squeeze
the release lever and pull up.
Tabletop Placement
The light source can be placed on a tabletop in three ways:
vertically, horizontally, and flat, as illustrated below.
Horizontal
Vertical
Flat
Tabletop placement
Point Source
Point source
Illuminated Object
The object is a backlit, translucent screen with crossed arrows
printed on it. The pattern is asymmetrical so you can tell if
images formed with lenses and mirror are reversed or
inverted. Millimeter scales on both arrows allow you to measure the magnification of an image even if the entire image is
not visible.
To use the illuminated object, mount the light source on an
optics bench or carriage (see above), or place it vertically or
horizontally on a tabletop.
Ray Box
Turn to select
number of rays
Position mark
on tab
The halogen bulb’s filament viewed “end on” closely approximates a true point source. It projects light through the round
opening in the case, but its actual location is about 3 cm
behind the outer surface of the case, as indicated by marks on
the tabs.
To use the point source, mount the unit on an optics bench or
carriage (see above), or place it vertically or horizontally on a
tabletop.
Ray wheel in 5-ray position
To use the light source as a ray box, place the unit flat on a
table top. Turn the wheel to select one, three, or five parallel
rays projected onto the table. A sheet of white paper placed
flat on the table makes the rays easier to see and allows you to
trace them with a pencil.
Use prisms, mirrors, and cylindrical lenses (such as those
included in the OS-8516A Ray Optics Kit) to study how the
rays are refracted and reflected.
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