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Slide projector
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==Types== Slide projectors proper: * Straight-tray slide projectors have a straight magazine holding several slides.{{fact|date=September 2022}} * [[Carousel slide projector]]s have a circular magazine holding several slides. * Stack-loader slide projectors{{fact|date=September 2022}} * [[Bell & Howell]] [[Slide Cube Projector]] had a cube-shaped magazine holding several slides. * Dual slide projectors{{fact|date=September 2022}} * Single slide projectors project a single slide at a time, changed by the operator.{{fact|date=September 2022}} * Dissolve projectors{{fact|date=September 2022}} * Stereo slide projectors project two slides simultaneously with different [[Polarization (waves)|polarizations]], making slides appear as three-dimensional to viewers wearing polarizing glasses{{fact|date=September 2022}} * Medium-format slide projectors, for [[medium-format]] slides larger than 35mm.{{fact|date=September 2022}} * Specialised [[large-format slide projector]]s for large transparencies of 18 Γ 18 cm (7.1 Γ 7.1") or larger.{{fact|date=April 2024}} Related devices: * [[Overhead projector]]s, for page-sized transparencies * [[Slide viewer]], for direct viewing of a magnified image of a slide
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