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Light and Optics – DiffractionSensor-Based Diffraction SystemOS-8452 with Optics BenchOS-8455A without Optics BenchA Single-Slit DiffractionA Double-Slit InterferenceA Real-Time Intensity GraphsMultiple-SlitSetSingle-SlitSetApertureBracketHigh SensitivityLight SensorRotary MotionSensorRed DiodeLaserLinearTranslatorThe Sensor-Based Diffraction System enables students to scanmany diffraction and interference patterns during one lab period.They can study the differences caused by changing the slit width,slit separation, and number of slits. And, with the addition of theGreen Diode Laser, they can study the difference caused bychanging the wavelength.How It WorksScanning with the Linear TranslatorIn this unique scanning system, the diffraction pattern is scannedusing a light sensor attached to a Rotary Motion Sensor. Asthe wheel on the Rotary Motion Sensor is rotated by hand, theRotary Motion Sensor moves along a gear rack (called the LinearTranslator). Students make the association between the diffractionpattern they see and the real-time graph of the light intensity versusposition.LinearTranslator314Rotary Motion SensorThe DataStudio computer scan of an interferencepattern is shown above a photograph of the actuallaser pattern. The pattern was produced with adouble-slit, having a slit width 0.08 mm and slitseparation 0.50 mm.Light SensorApertureBracketOptics BenchCLASS 2 LASER PRODUCTLASER LIGHT – DO NOT STARE INTO BEAMEasy Laser AlignmentThe laser beam can be aimedthrough the slits using two thumbscrews. Once the beam is aligned,either the laser or the slits can beremoved from the optics bench andreturned to the bench withoutre-aligning the beam.Change slits in the dark without re-aligning everything.The slit wheels eliminate the frustration of trying to change the slitsin a darkened room. Simply rotate to the next positive click to lock adifferent slit into position. The alignment of the disk only has to bedone once; thereafter all the slits on that wheel will be in aligned.Includes:Red Diode LaserDiffraction SlitsLinear TranslatorAperture BracketOptics BenchOS-8525AOS-8453OS-8535OS-8534AOS-8508Computer scanof a single-slitand double-slithaving the sameslit width.Order Information:Sensor-Based Diffraction ............................................................. OS-8452Also Available without Optics Bench:NEW Sensor-Based Diffraction Kit.................................. OS-8455ARequired for use with ScienceWorkshop:Light Sensor ................................................................................................. CI-6504ARotary Motion Sensor ..................................................................... CI-6538ScienceWorkshop Interface ...............................................................................................p. 68-72Required for use with PASPORT:High Sensitivity Light Sensor ................................................ PS-2176Rotary Motion Sensor ..................................................................... PS-2120PASPORT Interface .......................................................................................................................p. 10-23Recommended:Green Diode Laser ............................................................................... OS-8458 p. 316www.pasco.com