Illustration of Jan van Musschenbroek's “magic lantern,” one of the earliest forms of projector, 172
Illustration of Jan van Musschenbroek's “magic lantern,” one of the earliest forms of projector, 1721. These devices used a mirror to shine a light through a pane of glass with an image on it – here, a monster – and through a lens. Before electricity, these devices had limited utility, as they relied on sunlight or very dim candlelight to power the image.{WHF} {HTE} {Medium} -- source link
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