Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures (1914)

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CH. VII] PROJECTION OF IMAGES OF OPAQUE OBJECTS 167 § 271. Historical development. See appendix. References to literature : See the books referred to in Ch. i, § 2, also the special catalogues and directions furnished by the manufacturers of Opaque Lanterns and combined projection apparatus. PROJECTION OF IMAGES OF OPAQUE OBJECTS § 272. All of the images seen on a white screen within a dark room were originally of opaque objects. These objects were brilliantly illuminated by the sun, and the light reflected from them FIG. 89. CAMERA FOR EXHIBITING SURROUNDING LANDSCAPES. (From the Catalogue of McAllister). In a kind of cupola at the top is situated a plane mirror and beneath that a projection objective. The cupola rotates, thus enabling the operator to bring any desired scene upon the horizontal screen within the room. Such cameras were once common at fairs and in parks.