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Home > All Images > 1991 > May > 21 May 1991

Images Dated 21st May 1991

Choose from 6 pictures in our Images Dated 21st May 1991 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

Laser videodisc with simulated laser beam Featured 21 May 1991 Print

Laser videodisc with simulated laser beam

An optical video disc with a simulated beam of laser light. The optical disc uses technology similar to that used by digital compact discs to store information. In this instance, the disc holds many images from the US Space Shuttle programme in digital form. When inserted into a playing device, the disc is scanned by a minute laser beam. The beam uses the reflective properties of the disc to pick up the digital information, displaying the picture on a video monitor or producing a paper hard copy from a printer. Each 30cm diameter disc may contain many hundreds of full colour images, and are particularly useful for archival storage