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Magnetism, Seismometry, Shipbuilding

23 minutes, 51 seconds

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Videos are generally available for preview to non-members as short clips. Limited full-length titles are also available. Log In to view the full length title.

Browse Full-length Non-member Titles

Features a device that indicates the direction and force of an earthquake. Overviews odometers, the compass, gimbals, intricate differential gears, double-action piston bellows, and continuous flamethrowers. Also relates how rudders, bulkheads, and fore and aft sails enable a ship to sail against the wind.

Media Details

Runtime: 23 minutes, 51 seconds

Topic: Science
Subtopic: Electricity and Magnetism, Physics
Grade/Interest Level: 7 - 12
Standards:

Release Year: 2003
Producer/Distributor: Landmark Media
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Man sitting outside looks at us as he talks, gesturing with his hand forward as he speaks.

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Measurement device placed on a circuit powered by three AA batteries. Device shows 0.05 on the display. Caption: (Adabot) zero point zero five amperes.

Person speaking. Illustration of a battery. Caption: A battery uses chemistry to create electricity.

Illustration of a circuit board with a tubular object bridging two paths. Caption: In this circuit, I'm filtering power.

Rectangular diagram with objects moving clockwise around the perimeter. Caption: Electrons flow through the diode in one direction,

Machine labelled DS1052E Digital Oscilloscope with a wavy line across the screen and complex controls. Caption: We measure frequency in units called hertz.

Person in a workshop holding a power cord with three prongs. Caption: The answer is these three-prong cables are grounded.

Person and a robot in a workshop with a laptop in front of them. Caption: Hertz is how many times something happens per second.