Film: 8744

Science | 1940 | Sound | B/W

Synopsis:

Mongolism & Chromosomes
Basic cartoon representing a man trying to catch a butterfly with a net. Diagrams of different kinds of cell. Diagram explaining the two main parts of a cell. Different shape of chromosomes depending on each alive being (bee, flower, human). Simple explanationof what's a chromosome by using a draughts game, chess etc. Next, diagram to explain the essential role of chromosomes in reproduction and why illnesses can be transmitted. Close up of hands opening a book. Picture of someone suffering from Down's Syndrome. Close up of the diagram representing this specific illness. Diagram explaining why it used to be difficult to study chromosomes. Hands using tube made of glass. Process to be able to study cell's evolution out of their natural environment. Chromosomes broken up in order to be distinguished more easily. Hands cutting piece of paper with scissors to sort them. Human chromosomes classified and a circle around the one which is characteristic to Mongolism.

"MICROSCOPE PROTONIQUE"
Basic principle of a microscope. Diagrams explaining why the traditional microscope has a limitation in magnifying and how an electron microscope and a protonic microscope can sort out that matter. Diagrams showing how a protonic microscope works.
"ANALYSE PAR ACTIVATION"
Diagrams showing different way of measuring. Atomic laboratory in Saclay (France). Atomic battery. A searcher shot during the process of making a body radioactive. Diagrams explaining the necessity of this process to be able to analyse a small sample of material.

"PHYTOTRON"
Laboratory used to recreate diferent climate in order to understand and control its influence on plants, trees vegetables etc. (agricultural purpose)
Discussion of various scientific inventions or natural occurrences being controlled.
Mongolism and chromosomes. Pictorial description of different chromosomes that relate to different forms of life. Animated description of how parental chromosomes are transferred to their off-spring. Photograph of mongoloid child.

Explanation of how mongolism is related to chromosomes. Drops being added to substance in test-tube. To identify rogue chromosomes. Magnified layers of human chromosomes placed on chart and given labels.
The Proton Microscope. Pictorial explanation of how microscope works. Followed by how electron and then proton microscope works.
Activation Analysis. Discussion of radioactivity and various chemicals' responses to radioactivity.
Phytrotron. The effect of weather on plants and the research behind avoiding loss of production.


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