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Do-It-Yourself Engineering. Episode 17, A Tale of Three Catapults.

Contributor(s): Material type: FilmFilmPublisher number: 6756797 | KanopyPublisher: The Great Courses, 2017Publisher: [San Francisco, California, USA] : Kanopy Streaming, 2019Description: 1 online resource (streaming video file) (36 minutes): digital, .flv file, soundContent type:
  • two-dimensional moving image
Media type:
  • computer
Carrier type:
  • online resource
Subject(s): Genre/Form: Online resources: Stephen ResslerSummary: Delve into the history of the most potent artillery weapons in the era before gunpowder: catapults. Examine the workings of the ballista, onager, and trebuchet. Then get started on a model ballista capable of hurling a golf ball 200 feet. Analyze the machine's nylon torsion springs to ensure that they can store enough elastic energy to achieve the required 200-foot range.
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Title from title frames.

Film

In Process Record.

Stephen Ressler

Originally produced by The Great Courses in 2017.

Delve into the history of the most potent artillery weapons in the era before gunpowder: catapults. Examine the workings of the ballista, onager, and trebuchet. Then get started on a model ballista capable of hurling a golf ball 200 feet. Analyze the machine's nylon torsion springs to ensure that they can store enough elastic energy to achieve the required 200-foot range.

Mode of access: World Wide Web.

In English

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