Luoxia Hong
Luoxia Hong was a Chinese astronomer of the Western Han Dynasty who lived around 100 BC. Was active and introduced a lunisolar calendar .
Luoxia Hong came from southwest China and was one of around 20 astronomers, imperial as well as astronomers from the people like Luoxia Hong, who the Emperor Han Wudi convened in the capital Chang'an to prepare a new calendar. They submitted 18 drafts, of which the emperor considered Luoxia Hong and Deng Ping's to be the best. The calendar of Luoxia Hong (called Tai Chu Li) dates back to 104 BC. And remained in function after two thousand years. It was based on both solar and lunar dates and had a period of 19 years. The twelve months were 29 or 30 days long, with an additional month inserted in 7 of the 19 years. A prediction of the positions of the moon, planets and the prediction of eclipses was built in, so that it formed an astronomical prediction model.
He also built an equatorial armillary sphere and was possibly even its inventor in China. The armillary sphere served to illustrate his calendar.
literature
- Jiang Xioyuan: Luoxia Hong, in: Helaine Selin (Ed.): Encyclopaedia of the history of science, technology and medicine in non-western countries, Kluwer 2008, pp. 1243–1244
Web links
- John J. O'Connor, Edmund F. Robertson : Luoxia Hong. In: MacTutor History of Mathematics archive .
| personal data | |
|---|---|
| SURNAME | Hong, Luoxia |
| BRIEF DESCRIPTION | chinese astronomer |
| DATE OF BIRTH | 2nd century BC Chr. |
| DATE OF DEATH | 1st century BC Chr. |