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MANAGERS AND PROJECTIONISTS 917
197 — How would you test your painted or kalsomined screen
as to its condition ? 230
198 — Neat cement surface — what about it ? 230
199 — What advantage has the metalic surface screen? 230
200 — Over what viewing angle does brilliancy of metalic surface screens extend ? 230
201 — What faults have metalic surface screen surfaces besides
narrowness of viewing angle ? 230
202 — Is it advisable to attempt making home-made metalic
surface screens ? 231
203 — Mirror screens — of what do they consist? 231
204 — Name peculiarities of mirror screens and one of principal objections to them 231-232
205 — Of what may a translucent screen be made? 232
206 — How is film placed in projector when using translucent
screen? 232
207 — What objection is there to cloth translucent screen? 232
208 — What is the best translucent screen ? 233
209 — Under what condition may there be advantage in concave
screen surface ? 233
210 — What height above floor should screen be located? 234
211 — What should be location of screen with relation to lens? 239
212 — With what should the picture be outlined ? 240
213 — Should picture over-lap border, and why? 240
214 — What is effect of picture border ? 240
215— What color is best for border? 241
216 — Of what character should finish of screen surroundings
be? 243
217 — Why should you paint stage floor black? 243
218 — Are tinted screen surfaces desirable ? 246
219 — Is it desirable to locate screen at front of house? 247
220 — If screen is to be located on stage what advice would
you give in the matter ? 247-248
221— Describe right way to mount screen 249-250-251-252
222 — What two important points must be considered in screen
surfaces? 261
223 — Into what three classes may screen surfaces be grouped? 260 224 — How would you apply the knowledge contained in tables
12 to 17 in practice? 263-264
225 — Within what viewing angle is efficiency of ordinary commercial screens confined ? 263
226 — Name the good diffusing surfaces in table 14 263
Glare Spots
227— What is a "glare spot"? 237
228 — What should be limit of brilliancy of any spot of light
visible to audience ? 237
229 — Is there any excuse for glare spots ? 238
230 — Name the various glare spots most common 238