Some Characteristics of the Shadow Produced by a globe as a Shadow Caster Setting under a Horizontal Linear Light Source

Abstract

In this paper the authors deal with a research on some characteristics of the shadow on the illuminated plane due to aglobe which is set under a horizontal linear light source as a shadow caster.
First, the calculation procedure of the illuminance within the shadow is explained briefly and the calculated values are compared with the measured values experimentally.
Next, the shadow characteristics at the varied positions of the globe under the fixed condition of the horizontal linear light source, and vice versa, are described.