File:Giovanni Di Dondi clock.jpg
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Summary
[edit]DescriptionGiovanni Di Dondi clock.jpg |
English: Drawing of Giovanni De Dondi's astronomical clock, built 1379, Padua, Italy. It was weight driven This may be the earliest known drawing of a balance wheel (crown shaped, at top) and a verge escapement (wheel under it). The balance wheel had a beat of 2 seconds. Originally from Giovanni de Dondi, 'Il Tractatus Astarii', 1379. This is a modern tracing of an illustration in a 1461 manuscript at Oxford (MS Laud. Misc. 620 Folio 10). The original illustration can be seen here: Whitrow, Gerald (1989) Time in History, p.106. I copied it from the website, Engines of our Ingenuity, part 1535, Inventing the Clock. |
Date | |
Source | http://www.uh.edu/engines/epi1535.htm |
Author | Giovanni de Dondi |
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[edit]Public domainPublic domainfalsefalse |
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https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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current | 04:49, 10 June 2007 | ![]() | 400 × 507 (47 KB) | Chetvorno (talk | contribs) | {{Information |Description=Drawing of Di Dondi clock, built 1379, Padua, Italy. From Giovanni di Dondi, 'Il Tractatus Astarii', 1379 |Source=http://www.uh.edu/engines/epi1535.htm |Date=1379 |Author=Giovanni di Dondi |Permission= |other_versions= }} |
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