𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Reflecting screens for relief picture projection

✍ Scribed by Ives, Herbert E.

Book ID
115375486
Publisher
Optical Society of America
Year
1931
Weight
787 KB
Volume
21
Category
Article
ISSN
0030-3941

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## THE reflection characteristics which are desirable in order that the projection screen shall be adapted to an auditorium of given dimensions are pointed out. The distribution of reflected light should be such that for no angle of observation is the brightness greater than four times that at any