Ratio And Proportion (1970s)

This educational film presents a diverse collection of instructional demonstrations across various technical and scientific fields. It begins with a practical nursing lesson on calculating insulin dosages and preparing injections for diabetes management. The film then transitions into electronics, explaining Lissajous patterns and frequency comparisons using oscilloscopes. It also covers graphic arts techniques for scaling photographs using overlays and proportional scales, demonstrates Charles's Law of gases through thermodynamic experiments involving refrigerants and balloons, and concludes with drafting methods for resizing technical drawings using proportional dividers.

Keywords:
education, nursing, insulin, diabetes, mathematics, electronics, oscilloscope, Lissajous patterns, graphic arts, photography, scaling, physics, Charles's Law, thermodynamics, refrigeration, drafting, technical drawing