Instruction Manual Manual No. 012-08088A Laser Speed of Light Apparatus Model No.
Apparatus Model No. AP-8586 Table of Contents Equipment List........................................................ 3-4 Introduction ............................................................. 5 Equipment Setup ..................................................... 5-7 Suggested Experiments ............................................. 7-10 Sample Data............................................................11 Appendix A: Specifications............................................
Model No. AP-8586 Laser Speed of Light System Laser Speed of Light System Model No. AP-8586 Equipment List 1 2 DIO OPT IC DI OD E 003 S DE OSLA 8528 SE R FO R ST EM S SY 4 3 LA -06 SE 157 R AV LAS OID ER FRO M EXP LIG OS THIHT IS UR S AP EM E ER ITT TURED E 5 6 7 8 9 10 Metrologic® 45-725 Receiver DATE 0400 9V Included Equipment 1. Diode Laser with power adapter (1) Replacement Model Number* OS-8528A 2. Component Carrier (2) OS-9107 3. Lens, +127 mm (1) OS-9134 4.
Laser Speed of Light System Model No.
Model No. AP-8586 Laser Speed of Light System Introduction The velocity of light in free space is an important and intriguing constant of nature. Whether the light comes from a laser on a desktop or from a star that is hurling away at fantastic speeds, the velocity of light will yield the same constant value. In more precise terminology, the velocity of light is independent of the relative velocities of the light source and the observer.
Laser Speed of Light System Model No. AP-8586 3. Arrange the laser, lens, receiver and two component carriers on the laser alignment bench (Figure 3). R SE LA7 DE0615 DIO003- E SUR TED EXPO EMIT ID T IS TURE AVOLIGH APER THIS R LASE M FRO Figure 3: Aligning the lens, carriers, and receiver with the laser 4. Place the alignment bench on a horizontal surface. You will need 10 to 20 m of clear space in front of the laser. 5. Mount the mirror on the tripod and place it a few meters in front of the laser.
Model No. AP-8586 Laser Speed of Light System WARNING: Never look directly at the laser light source or reflected light, such as from a mirror. Although the laser used in this experiment is of low power, looking directly into the laser light source or its reflected light from a mirror could cause severe eye injuries or burns. To avoid eye injury, do not look directly into the beam of the laser and wear laser protective goggles. When aligning the laser, use the alignment marker.
Laser Speed of Light System Model No. AP-8586 arbitrary (but constant) baseline. This elapsed time can be expressed mathematically as: ∆t′ = ∆t + t k (equation 1) where tk is an unknown constant. For the same reason, you can also measure d′ instead of ∆d where ∆d′ = ∆d + d k (equation 2) The equation of a line fitted to a plot of ∆d′ vs. ∆t′ is ∆d′ = c∆t′ (equation 3) where c represents the slope of the line.
Model No. AP-8586 Laser Speed of Light System Table 1a Mirror Position (m) Phase (s) Analysis Plot ∆t′ vs. ∆d′. (Remember that ∆d′ is two times the mirror position. The slope of the best-fit line is the speed of light. Note: You can plot your data and obtain the best-fit line using DataStudio. For instructions, see Appendix B of this manual.
Laser Speed of Light System Model No. AP-8586 Sample Data Table 1: Path Length vs. Phase Path Length vs.
Model No. AP-8586 Laser Speed of Light System Appendix A: Specifications Component Description Diode Laser 1 mw, 650 nm Component Carrier 6.3 cm (height) x 7.6 cm (length); 3.8 cm x 7.5 cm (base) Lens 127 mm Laser Alighment Bench 38.8 cm length Metrologic Light Receiver 10.2 cm x 6.2 cm x 4.2 cm; two channel output (one audio, one video), dual light sensors, 9 VDC Stainless steel pads 0.97 x 4.5 cm, rectangular, stainless steel Cable, coaxial, RCA male to BNC male 183 +/- 2.
Laser Speed of Light System Model No. AP-8586 Appendix B: Plotting Data in DataStudio The following instructions are provided for new users or those unfamiliar with DataStudio. The following instructions explain how to create an x-y graph and/or calculate statistics on previously collected data. 1. Open DataStudio. When the Welcome to DataStudio window opens, select “Enter Data.” An editable table and Graph display open. 2. On the main toolbar, click the Summary button. 3.
Model No. AP-8586 Laser Speed of Light System Appendix C: Laser Safety The OS-8528 is a low power, Class 2 laser. When Class 2 lasers are used in accordance with Occupational Health and Safety Administration (OSHA) standards, Class 2 lasers are not harmful. However, when appropriate safety precautions are not taken, Class 2 lasers can cause permanent, irreversible damage to the eyes, skin, and other body tissues.
Laser Speed of Light System Model No. AP-8586 • Do not place your hand, finger, or any other part of your body directly on the laser. Lasers can burn the skin and damage tissue. • Do not point a laser at your own eye, through glass, mirrors or transparent objects in your surroundings, or at the eyes of other individuals. • Never remove any of the covering or components of the AP-8586 Diode Laser. If the laser is defective, return the defective laser immediately to PASCO scientific.
Model No. AP-8586 Laser Speed of Light System Appendix D: Technical Support For assistance with the AP-8586 or any other PASCO products, contact PASCO as follows: Address: PASCO scientific 10101 Foothills Blvd. Roseville, CA 95747-7100 Phone: 1-800-772-8700 or (916) 786-3800 FAX: (916) 786-3292 Web: www.pasco.com Email: techsupp@pasco.
Laser Speed of Light System Model No. AP-8586 Appendix E: Copyright and Warranty Information Copyright Notice The PASCO scientific 012-08088A Laser Speed of Light Apparatus Manual is copyrighted and all rights reserved. However, permission is granted to non-profit educational institutions for reproduction of any part of the 012-08088A Laser Speed of Light Apparatus Manual, providing the reproductions are used only for their laboratories and are not sold for profit.
