On the Origin of Clockwork, Perpetual Motion Devices, and the Compass
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On the Origin of Clockwork, Perpetual Motion Devices, and the Compass is by Derek J. de Solla Price. The section headings are Power and Motion Gearing, Mechanical Clocks, Perpetual Motion and the Clock Before de Dondi, and The Magnetic Compass as a Fellow-Traveler from China.
The writer says the ancestor of the mechanical clock has been thought by some to be the sundial, while the true ancestor is to be found among the highly complex astronomical machines. The writer holds it may be readily accepted that the use of toothed wheels to transmit power or turn it through an angle was widespread in all cultures several centuries before the beginning of our era. A figure shows the framework structure of the astronomical clock of Giovanni de Dondi of Padua, A.D. 1364. Biruni's calendrical machine is called the earliest complicated geared device on record.
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Book facts
- Author
- Derek J. de Solla Price
- Pages
- 47
- Language
- English
- Genre
- Engineering
- Formats
- PDF, EPUB, Read online