Purpose:Demonstrates laser diffraction by pinholes
Description:A series of pinholes is mounted on a slide which can be moved across the laser beam on a cross-carriage. Pinhole sizes include: 1.0mm, 0.8mm, 0.6mm, 0.4mm, 0.2mm, and 0.1mm. The pattern can generally be seen in the lecture hall without aid of a magnifying lens by backing the cart as far as possible away from the screen in front of the hall. For display on the small screen on the cart optical rail a spherical lens can be used if necessary.
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Last modified on Wednesday, 03 September 2014 16:29