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about
1088
| 1088 • The Dream Pool Essays is published in this year by the polymath Chinese scientist and statesman Shen Kuo. His book represents the earliest known writing about the magnetic compass, movable type printing, experimentation with the camera obscura only decades after Ibn al-Haytham, and includes many different fields of study in essay and encyclopedic form, including geology, astronomy, botany, zoology, mineralogy, anatomy, pharmacology, geography, optics, economics, military strategy, philosophy, etc. Some of Shen's most advanced theories include geomorphology and gradual climate change, while he improves Chinese astronomy by fixing the position of the pole star and correcting the lunar error by plotting its orbital course every night for a continuum of five years. Shen's book is also the first to describe the drydock in China, and discusses the advantages of the relatively recent invention of the canal pound lock over the old flash lock. |
about
Age: 15y
1103
Age: 15y
birth of childHeilika of Pettendorf 1 Source ⇓ |
| 1103 • Amadeus III becomes Count of Savoy. |
after
Age: 22y
1110
Age: 22y
| 1110 • First Crusade: The Crusaders conquer Sidon. |