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Why must G-E scientists know about SHADOWS?
A. Harsh shadows produced by bare lamp
B. Soft shadow created by lamp in reflector
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HESE three illustrations bring out, simply, three basic facts about shadow formation. Picture A shows the harsh, sharp shadows produced by a concentrated light source, such as a bare lamp. Picture B shows the softer shadows created by a somewhat diffused light source, such as that same lamp in a reflector. Diagram C illustrates the principle that the sharpness of a shadow depends upon the distance of a light source as well as upon its size . . . and hence that the sharpness of a shadow remains unchanged, provided the diameter of the light source is proportionally increased or decreased as the distance from source to subject is increased or decreased.
Cinematographers are familiar with these basic principles about shadows and with their several corollaries . . . and with scores of refinements of them gained from long, practical experience.
The sharpness of a shadow depends upon both the distance of a light source and its size
Why, then, is it important for G-E laboratory experts to be grounded in the fundamentals?
Because, by being well versed in the basic principles of shadow formation and of the whole art of cinematographic lighting, these engineers can work more intelligently with you in creating new lamps for motion picture needs. Likewise, they are better able to help you make full use of the many G-E Mazda lamps already available.
Studios from coast to coast recognize the advantages of this, as well as of dependable lighting, by using G-E Mazda lamps for all their lighting requirements. General Electric Company, Nela Park, Cleveland, O.
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