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DAGE MOBILE TV brings studio broadcast quality to any classroom
Broadcast quality equal to that of professional TV studios is achieved by the Dage Educational Television System (ETS-1) . . . and it is completely mobile! Moves on silent casters through classroom doorways. Included in the system is the Dage 320-B series vidicon TV camera and console control center. The versatile 700-line resolution camera is
equipped with electronic viewfinder, hood, four-lens turret and tripod. It gives excellent picture quality, even of microscopic materials. Attractive console contains video monitors, camera controls,
sync generator power supply and wave form monitor. Modular construction of console makes it easy to maintain and operate . . . accommodates optional equipment as needed . . . will broadcast on micro-wave for intraschool networks. For complete details about the Dage ETS-1 write for our free catalog, or request consultation with a Dage representative.
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DAGE TELEVISION DIVISION
Thompson Ramo Wooldridge Inc. 2607 West 10th Street, Michigon City, Indiana
struction by pathogenic bacteria portrayed in the breakdown of hi man blood cells by a toxin pr duced by streptococci and in a soi produced by bacteria on the skin i a rabbit.
Next, the extremely small size ( viruses is emphasized as the narrs tor states that most can be see only with the aid of the electro microscope. The fact that virust have no independent metabolisi is given as a major difference b( tween them and other types c microorganisms. Because of th they can grow only within li\'in tissue cells. Several types of viruso are seen, and cell destruction b the polio virus is depicted b means of slides observing section of a spinal cord before and afte virus infection. A mouse is infectd by pneumonia virus, and the result of the infection are portrayed a the dissected lung of a norma mouse is compared with the lun from an infected animal. Cell de struction by the viruses is furthe shown as cultures of human tissu' are infected by adenovarus. A serie of micro-views shows the progres sive destruction of the human tis sue.
The rickettsiae are microorgan isms which resemble bacteria ii structure. However, like viruses they grow only in living cells. Thesi microorganisms are transmitted b; the bite of certain insects and thi tick which is pictured.
The protozoa are represented ai the lowest form of animal life. Th( tremendously diverse form of th( protozoans is emphasized. Th< pathogenic varieties which caus( amoebic dysentery and Africai sleeping sickness are described. The destruction of red blood cells h\ the protozoan causing malaria i: portrayed graphically by the usf of animation.
The film emphasizes that disease; caused by pathogenic organisms are most prevalent in areas of the worlc where people live in crowded, unsanitary conditions. Many question* remain unanswered regarding the relationship between microorganisms and disease. As indicated by the narrator, only further research can reveal the answers to such questions.
Appraisal
Microorganisms That Cause Disease is an excellent introduction to the five types of pathogenic microorganisms. The concept of disease and the destruction of cells as a natural consequence of the exist
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Educational Screen and Audiovisual Guide — July, 1960