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Rayguns are a type of directed-energy weapon. They are a classic and widespread feature of science fiction. Types of raygun have various names: ray gun, death ray, beam gun, blaster, laser gun, phaser, etc. They supply the general role of guns in the…

(From Wikipedia) The Laserdisc (LD) is an obsolete home video disc format, and was the first commercial optical disc storage medium.

While LaserDisc produced a consistently higher quality image than its rivals, the VHS and Betamax systems, the…