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WIDE-SCREEN SLIDE PROJECTION
How to Beat the Cosine 4th Law of Illumination. Control over the distribution of screen illuminance from a slide projector by proper design of the illuminating condenser.
By Helmut Weiss

DISPLAYS, PAPERS, AND LIGHTING
The Visual System in Command Centers. CRT displays, projection displays and hard copy present problem in illlumination. Different levels of illumination offer one data source an advantage over the other.
By A. C. Stocker

SID CONVENTION
Highlights of the Fourth Symposium. Keynote address, technical program and papers, list of exhibitors.GUEST EDITORIAL

PRESIDENET'S EDITORIAL 

ID READOUT

ID READOUT

EDITORIAL ADVISORY BOARD

ID PRODUCTS

SID SUSTAINING MEMBERS

INDEX TO ADVERTISERS