PASCO OS-8494 - Manual
PASCO OS-8494 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Disconnect the syringe from the plastic tubing.
- Page 3 – Figure 3
- Page 4 – Technical Support; For assistance with any PASCO product, contact PASCO at:; Limited Warranty; Copyright; Trademarks; Address: PASCO scientific
I n s t r u c t i o n S h e e t
0 1 2 - 1 2 3 6 0 A
PA S C O O p t i c s
A d j u s t a bl e F o c a l L e n g t h L e n s
O S - 8 4 9 4
800-772-8700
www.pasco.com
*012-12360*
®
Included Equipment
Quantity
1.
Adjustable Focal Length Lens
2
2.
Tubing, 5 mm O.D.
30 cm
3.
10 mL Syringe
1
Related Equipment
•
Human Eye Model (OS-8477)
•
Eye Model Bracket (OS-8469)
•
Adjustable Lens Holder* (OS-8474
•
Basic Optics Light Source* (OS-8470)
•
Basic Optics Bench*, 60 cm (OS-8541)
•
Basic Optics Viewing Screen* (OS-8460)
*Part of Basic Optics System, OS-8515A
See www.pasco.com for other PASCO Optics System equipment.
Introduction
The Adjustable Focal Length Lens includes two lenses, a
length of plastic tubing, and a 10 milliliter (mL) syringe. Each
lens consists of a plastic housing with two flexible membranes
held onto the housing with removable rings. Use the syringe to
fill the lens with a fluid such as water and to increase or
decrease the amount of fluid between the two flexible mem-
branes. By adjusting the curvature of the membranes, you can
adjust the focal length of the lens.
The Adjustable Focal Length Lens is designed to be used with
the PASCO Human Eye Model (OS-8477) to demonstrate
accomodation
, the ability of the eye’s crystalline lens to change
its focal length. It can also be used with components of the
PASCO Basic Optics System (OS-8515A) such as the Light
Source, Optics Bench, Viewing Screen, and Adjustable Lens
Holder.
1
2
3
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Summary
® 2 Assembly and Maintenance Cut a length of tubing about 15 cm (6 inch) long. Adjust the syringe so that the piston is beyond the midpoint of the cylinder. Attach the piece of plastic tubing to the 10 mL syringe and the connector on the edge of the lens housing (see Figure 1). NOTE: Avoid touching ...
® 3 Use with the Human Eye Model Set the Basic Optics Light Source about 5 to 10 cm in front of the Human Eye Model with the “crossed-arrow” target aligned with the opening in the front of the model. Place the retina viewing screen in the “NORMAL” groove. Make sure that the lens is filled with a flu...
® 4 Technical Support For assistance with any PASCO product, contact PASCO at: For the latest revision of this Instruction Sheet, visit: www.pasco.com/go?OS-8494 Limited Warranty For a description of the product warranty, see the PASCO catalog. Copyright The PASCO scientific 012-12360A Adjust- able ...
