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ERIC Number: ED001401
Record Type: RIE
Publication Date: N/A
Pages: 13
Abstractor: N/A
Reference Count: N/A
ISBN: N/A
ISSN: N/A
OVERHEAD TV - THE IDEAL VISUAL AID.
BRETZ, RUDY
THE TELEVISION CAMERA IS A MEANS OF EXTENDING THE NUMBER OF STUDENTS PER TEACHER, AND IT IS AN INVALUABLE VISUAL ASSET. IT RELIES ON VISUAL AIDS PRODUCED BY THE INSTRUCTOR, AND CAN EASILY BE MOUNTED ON A DEMONSTRATION TABLE WITH PROPER EQUIPMENT AND A SMALL MONITOR. ALTHOUGH THE INSTRUCTOR CANNOT DISPLAY MUCH MATERIAL SIMULTANEOUSLY WITH THE CAMERA, HE HAS EASY ACCESS BY FACING THE CLASS, AND IMMEDIATE ERASURES ARE POSSIBLE. OTHER ADVANTAGES ARE THAT GRAPHIC MATERIALS CAN BE USED WITHOUT SPECIAL PREPARATION, THE INSTRUCTOR CAN HAVE ALL SHADES OF BLACK, WHITE AND GRAY ON THE SAME PAPER, AND THERE IS NO KEYSTONE DISTORTION. IN COMPARISON TO A TRANSPARENT SLIDE PROJECTOR, THE OVERHEAD TELEVISION'S GREATEST LIMITATION IS THE SMALLER SCREEN. HOWEVER, MATERIAL CAN BE CHANGED QUICKLY BY ZOOMING THE LENS OUT OR IN. THE ADVANTAGES AGAINST THE FILM STRIP PROJECTOR ARE THE SAME AS WITH THE SLIDE PROJECTOR. THE OVERHEAD TELEVISION IS COMPARED WITH THE OPAQUE PROJECTOR, AND THE CONVENTIONAL TELEVISION. A MAJOR ADVANTAGE IS THE ALLOWANCE FOR MORE EMPHASIS ON CERTAIN SUBJECTS. FEASIBILITY OF THE OVERHEAD TELEVISION IS ALSO DISCUSSED, SHOWING PRICES FOR MAINTENANCE AND USAGE AS COMPARED WITH OTHER AUDIOVISUAL ASSETS. THE KINDS OF CAMERAS AND LENSES, AS WELL AS CIRCUITS, ARE ALSO BRIEFLY DISCUSSED. A DRAWING OF THE POSITION OF AN OVERHEAD TELEVISION IN A LABORATORY IS GIVEN.
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: N/A
Identifiers: California (Los Angeles)