Machines

Duration: 11

Genre: Educational

Creator: Criswell John F

Format: 16mm

Color: B&W

Sound: sound

Description: Demonstrates simple machines and how they work to lighten man's work. Includes wheel-and-axle, lever, inclined plane, pulley, wedge and screw., First shows a small boy running vainly to keep up with older members of the Rangers Club who are riding bicycles, thus illustrating man's dependence upon machines. Then exhibits and demonstrates the operation of simple machines such as the lever, the inclined plane, the pulley, the wedge, and the screw. Explains how a door knob and a pencil sharpener are elaborations of quite primitive machines.

Complete Record: Demonstrates simple machines and how they work to lighten man's work. Includes wheel-and-axle, lever, inclined plane, pulley, wedge and screw., First shows a small boy running vainly to keep up with older members of the Rangers Club who are riding bicycles, thus illustrating man's dependence upon machines. Then exhibits and demonstrates the operation of simple machines such as the lever, the inclined plane, the pulley, the wedge, and the screw. Explains how a door knob and a pencil sharpener are elaborations of quite primitive machines.NOTE: Two (or more) records have been merged together to create this data.

Online Copy: https://www.youtube.com/watch?v=A35lrB3ZQ-s

Metadata Source:YouTube