Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 134
lenses facing down, as illustrated in Fig. 70.With the lamp-house set in this position we could utilizethe right angle carbon setting as illustrated in Fig. 62 togood advantage. Under other conditions it may be necessary to projectthe picture on the ceiling of a high building, in which casethe… … Fig. 70
Motion picture theaters · Electric lighting
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