PURPOSE: To show diffraction by wires of different size.
DESCRIPTION: Position the three-wire slide in a holder on the cross-carriage in the laser beam to see the diffraction pattern. The pattern can be viewed directly on a distant screen or on the small screen on the laser cart, with use of the cylindrical magnifying lens if appropriate.
REFERENCES: (PIRA unknown.)
EQUIPMENT: Laser cart, slide with three wires of different sizes.
SETUP TIME: None.
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