lysbildesprojektor
A lysbildesprojektor, or slide projector, is an optical device used to project images from transparent slides onto a screen. These slides are typically small, square or rectangular pieces of film or glass containing a positive image. The projector works by passing a bright light source through the slide. A lens system then magnifies and focuses this light onto a projection surface.
Early lysbildesprojektorer were often powered by limelight or arc lamps, which produced intense light but also
The use of lysbildesprojektorer was widespread in education, business presentations, and home entertainment for much of
While largely superseded by digital projectors and flat-screen displays, the lysbildesprojektor holds historical significance in the