Graphic Aid for Projectors.

Abstract

During the projection of visual material on a screen by an overhead projector it is frequently desirable to index, indicate or designate material referred to by a commentator. A graphic aid visually emphasizing information being projected from a transparency onto a screen by means of an overhead projector is provided herein. The graphic aid is in the form of a strip of a transparent material whose light transmission properties differ from those of the transparency.

Document Details

Document Type
Technical Report
Publication Date
Jun 20, 1979
Accession Number
ADD006507

Entities

People

  • James M. Heisler

Organizations

  • United States Army

Tags

DTIC Thesaurus Topics

  • Absorbers (Materials)
  • Advanced Materials
  • Engineered Materials
  • Light Transmission
  • Materials
  • Metamaterial Absorbers
  • Metamaterials
  • Photographic Materials
  • Photography
  • Transparencies

Fields of Study

  • Physics

Readers

  • Human-Computer Interaction (HCI).
  • Systems Analysis and Design