Project Gutenberg 2009-09-16 Public domain in the USA. 551 Price, Derek J. de Solla (Derek John de Solla) 1922 1983 Price, Derek John de Solla On the Origin of Clockwork, Perpetual Motion Devices, and the Compass Produced by Chris Curnow, Turgut Dincer, Joseph Cooper and the Online Distributed Proofreading Team at https://www.pgdp.net. "On the Origin of Clockwork, Perpetual Motion Devices, and the Compass" by Derek J. de Solla Price is a scientific publication written in the mid-20th century. This work delves into the historical development and origin of various mechanical devices, including clocks and compasses, highlighting their evolution over two millennia across different cultures. Price aims to clarify misconceptions and establish a more cohesive understanding of how these technological advancements arose and influenced each other. At the start of the work, the author introduces the complexity of tracing the origins of mechanical clocks and the magnetic compass, revealing how common misunderstandings have perpetuated inaccuracies in their histories. He argues against the traditional view that simpler timekeeping devices like sundials directly led to the mechanical clock, proposing instead that they evolved from sophisticated astronomical models developed in ancient cultures. The opening sets the stage for a comprehensive examination of the technological progression from early gearing in different civilizations to the intricate mechanics of clocks and the interplay with concepts like perpetual motion and magnetism. (This is an automatically generated summary.) http://book.klll.cc/files/30001/30001-h/images/cover.jpg Reading ease score: 57.2 (10th to 12th grade). Somewhat difficult to read. en Clocks and watches Horology Q TS Text Technology Manufacturing Category: History - Other Category: Engineering & Technology 158536 2025-07-12T10:06:00.316180 text/html 133478 2024-10-24T20:21:05 text/html 1278185 2025-07-12T10:06:03.891178 application/epub+zip 1280044 2025-07-12T10:06:01.116148 application/epub+zip 112376 2025-07-12T10:06:00.706162 application/epub+zip 1340832 2025-07-12T10:06:06.006111 application/x-mobipocket-ebook 1327827 2025-07-12T10:06:03.464197 application/x-mobipocket-ebook 162824 2022-09-14T04:00:05.820954 application/x-mobipocket-ebook 124693 2025-07-12T10:05:59.926178 text/plain; charset=us-ascii 104780 2024-10-24T20:21:05 text/plain; charset=us-ascii 124339 2021-01-05T16:38:14 text/plain; charset=us-ascii 124348 2021-01-05T16:38:14 text/plain; charset=us-ascii 23904 2025-07-12T10:06:06.144123 application/rdf+xml 14648 2025-07-12T10:06:00.785156 image/jpeg 2510 2025-07-12T10:06:00.746158 image/jpeg 47601 2021-01-05T16:38:14 application/octet-stream application/zip 47399 2021-01-05T16:38:14 application/octet-stream application/zip 1195131 2021-01-05T16:38:14 application/octet-stream application/zip 47353 2021-01-05T16:38:14 application/octet-stream application/zip 1207043 2025-07-12T10:06:00.386155 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia