Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 193
ntages of setting the carbons at the usual angle asillustrated in Fig. 100, as compared with the perfectlyvertical carbon setting recommended to the users of theeconomizer, I present photographic reproductions of thearc phenomena and light distribution, which have beenprepared at a considerable… … ■W:o ^ o C: i-^ ^ co U X>-^ o c no iu cv o 3,-o o 5. ^ rv v- ■II *>.- 3 ■ Ex) vj
Motion picture theaters · Electric lighting
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