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Beginner's Corner

3 bytes added, 23:48, 23 September 2013
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[[Image:Sandbox_Kit.jpg|right]]The "original" hobbyist's approach to holography was described in the May 1979 issue of ''Physics Education'' as the aptly named ''Sandbox Holography''. Metrologic produced and sold an identically named kit. The kit included some holographic film, chemicals for processing the film, and few lenses and mirrors. Not included were the laser (and at the time, that meant a moderately pricey helium-neon gas laser) nor the sandbox.
Holography is extremely sensitive to movement, even microscopic movement, during the exposure. In conventional photography, movement will blur the image. With a hologram, since movement would completely alter the interference pattern between the direct and reflected laser light, the image can be lost completely. The sandbox was used to help eliminate vibration.

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