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November 22, 2008
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Diffraction Arc (Teacher-Developed, Classroom-Tested)
Diffraction Arc (Teacher-Developed, Classroom-Tested)


Developed by John Koser, the diffraction arc allows students to visualize the diffraction pattern without relying on a screen or wall. Precise incremental degrees can be read of the large protractor. Use the included diffraction grating or blank CDs or DVDs you provide to create different diffraction patterns. Each set includes one diffraction arc, diffraction grating and small mirror with instructions. Required but not included is a laser pointer. Grades 9–12.


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WW01751M01
Diffraction Arc
 $41.99
WW63868M00
Laser Pointer, Executive Visible Range 1500 Feet, 5 1/4" L x 7/16" Diameter, Operate Time 3 hrs Continuous, Class IIIa
 $29.95
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Content-Based Professional Development Programs.

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