Characteristics of High Intensity Arcs

D. B. Joy, A. C. Downes

The amount of light used at the aperture plate of the motion picture projector has steadily increased until at the present time only the high intensity are can furnish the light concentration necessary to satisfy the demands of the larger theaters. Recent changes which have been made and rumors of others about to occur in the motion picture industry have again emphasized the constant demand for more light on the screen of the theater. It therefore seems desirable to call attention to certain characteristics of high intensity arcs which may help in the solution of the ever present problem of increasing the useful light.

Print ISSN
Published
1930-03
Content type
Original Research
DOI
10.5594/J13077