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CHAPTER XII PROJECTION ROOMS AND SCREENS
§ 600. Apparatus and Materials for Chapter XII:
1. Room which can be made entirely dark, or which can be partly lighted, depending on the kind of projection and the radiant.
2 . If for exhibitions, the room should have plenty of aisles and exits, and there should always be lights (red lights) near the exits, and these lights should be independent of the projection circuit. The room should be well ventilated, and of a form found suitable for audiences, e. g., like a church, theater or university lecture room. The room should be tinted and decorated with light-absorbing colors (§ 604).
3. The lantern or other projection apparatus should be so placed that it does not interfere with the audience (§ 612-620).
4. Special room for the projection apparatus. If in a moving picture theater, there should be a fire-proof room for the apparatus. This should have a large ventilator extending through the roof or side of the building (§ 556-5 57).
5. Screen upon which the images are projected. This should receive the image at right angles to avoid distortion (fig. 241), and be of sufficient size for the room (§ 633).
§ 601. For the historical consideration of rooms and screens see under history in the Appendix. See also the works referred to in Chapter I, § 2, and the catalogues of manufacturers of projection apparatus and materials. Periodicals on moving pictures like the Moving Picture World; F. H. Richardson's Motion Picture Handbook; and F. A. Talbot's Moving Pictures.
§ 602. Suitable room for projection. — Any room which can be darkened may be used for projection, but to be satisfactory it should have the qualities of a good auditorium.
(1) There should be plenty of aisles and passages, so that the auditors can easily reach their seats.
(2) There should be plenty of exits, so that the room can be quickly and safely emptied.
(3) There should be plenty of fresh air.
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