| Sci & Tech Chronology: In the year 724 |
Tools
Buddhist monk I-Xing and Chinese engineer Lyang Lingdzan build a water clock that has an escapement, the device that causes a clock to tick. The escapement opens and closes a valve, making the flow of water maintain a more constant rate. The clockwork is used to power various astronomical devices rather than to indicate the hour. See also 500 Tools; 1088 Tools.
| Wikipedia: 724 |
| Millennium: | 1st millennium |
|---|---|
| Centuries: | 7th century – 8th century – 9th century |
| Decades: | 690s 700s 710s – 720s – 730s 740s 750s |
| Years: | 721 722 723 – 724 – 725 726 727 |
| 724 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 724 DCCXXIV |
| Ab urbe condita | 1477 |
| Armenian calendar | 173 ԹՎ ՃՀԳ |
| Bahá'í calendar | -1120 – -1119 |
| Berber calendar | 1674 |
| Buddhist calendar | 1268 |
| Burmese calendar | 86 |
| Byzantine calendar | 6232 – 6233 |
| Chinese calendar | 癸亥年十二月初一日 (3360/3420-12-1) — to —
甲子年十二月十一日(3361/3421-12-11) |
| Coptic calendar | 440 – 441 |
| Ethiopian calendar | 716 – 717 |
| Hebrew calendar | 4484 – 4485 |
| Hindu calendars | |
| - Vikram Samvat | 779 – 780 |
| - Shaka Samvat | 646 – 647 |
| - Kali Yuga | 3825 – 3826 |
| Holocene calendar | 10724 |
| Iranian calendar | 102 – 103 |
| Islamic calendar | 105 – 106 |
| Japanese calendar | |
| Korean calendar | 3057 |
| Thai solar calendar | 1267 |
724 Care
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| Shopping: 724 |
 | Balsas (river) |
| Year 976 (in Science & Technology) |
| Karun (river of western Iran) |
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 | Sci & Tech Chronology. History of Science and Technology, edited by Bryan Bunch and Alexander Hellemans. Copyright © 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. Read more |
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| Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "724". Read more |
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