6C20.20  THIN WIRE DIFFRACTION

A divergent laser beam forms a diffraction pattern after passing a thin wire. Wire sizes include: 0.12, 0.16, 0.20, 0.26 mm. Can be projected on to a screen or whiteboard. The pattern will be visible from 1/2 m and beyond. A slide mount with tape is available for attaching hair or other thin items.

View seen by students in darkened room.         (put laser at end of optics bench, front end should be at ~380 mm)         (make divergent beam with 18 mm lens at 440 mm, aperture at 460 mm, 252 mm lens at ~520 mm)         (put pinhole at ~552 mm)

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