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Uses animation, diagrams, plans, scale models, and scenes of representative buildings (particularly French cathedrals) to explain and illustrate the development of Gothic architecture in the 12th a...
Discusses radius, threading, sheer-cut finishing, round-nosed finishing, and side-facing tools. Demonstrates the correct setting of the tools and the type of cut each makes.
Traces the historical development of the camera, discussing the reasons for subsequent changes from the original camera obscura of 1553. Demonstrates finally that every camera, whatever its make, c...
Division of Visual Aids, U.S. Office of Education (Producer); Federal Security Agency (Producer); Ray-Bell Films, Inc. (Producer)
Summary:
Explains why accessories are used with gage blocks; shows how to inspect a plug gage, an adjustable snap gage, a profile gage, a ring gage, and a screwthread pitch; and shows how to build a height ...
Illustrates abnormalities in gait caused by pain, structural defects and deformities, neuromuscular disorders, and a combination of these causes. Details technical symptoms of the gait and posture ...
Shows some properties that distinguish gases. The volume of ammonia and hydrogen chloride that combine are measured quantitatively, and simple integer volume ratios are measured for the combination...
Reviews the contributions of Mendel, the Hertwigs, and Miescher to our understanding of modern genetics. Discusses chromosome chemistry in terms of the cytological distribution of nucleic acids, t...
Presents some of the steps and procedures involved in conducting controlled breeding experiments and shows the results of some genetic crosses. Introduces three important areas of genetic research....