The seventh, he hit
08:59, 2009-Aug-11
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The seventh, he created a specific calculation of the moon at any one time from the point of intersection of the degree of yellow-white sun distance and the location of the method. This fact has been resolved, fresh Eclipse and Eclipse at the size of losses from the calculation of position, etc., but Li Qian as this did not explain further. This type of calculation is the first clear record of King Yang Wei in the early history 237 years in the. Eighth, he invented the information operation , which is a food delivery occurred in the calculation of time, apart from the moon to consider the impact of heterogeneity movement, but also taking into account the Eclipse took place in different months of the year, must be coupled with different the correct value of a special method, in fact, already taking into account the uneven movement of the Sun Eclipse of the impact.
Ninth, and Yong Liu Hong also together to complete a solar cycle 24 the location of the ecliptic to the extreme,length, length of day and night and day in the faint stars of the astronomical calculations of data compilation of the work table, the table below calendar quarter in the Eastern Han Dynasty in ancient China later it became one of the traditional calendar.
Quality words, Liu Hong has put forward a series of new astronomical data, the new forms, new concepts and new methods of calculation to ancient China to the Sun, Moon and Eclipse, such as movement of research into a new stage. Qian as his calendar is the calendar system of ancient China as a milestone in maturing.
Fifth, the discovery of precession and Run-week reform
The so-called precession, is the spring equinox or the winter solstice point between the star position in the year of the astronomical phenomenon of the westward movement. In the second century BC, the Greek astronomer Hipparcos equinox points have been found along the Yellow River Road West, every hundred years back 1 of the phenomenon, first discovered in ancient China is a phenomenon similar to the Eastern Jin Dynasty astronomer, he 330 years or so, the phenomenon of precession The ancient Greeks with very different in form and substance of the same formulation.
Inbefore the astronomers of ancient China have been found at the winter solstice the sun is located between the location of the star changes in the situation, but this did not lead to a precession of the law and concluded. Have been fully aware of the factonly the astronomical community for the well-known astronomical significance of an important phenomenon, and set the number of phenomena of the precession of the exposition. He is represented by Pleiades stars on the short to being midwinter 24 push the sentence is understood that Pleiades stars inevening at the Winter Solstice when transit. Then measured, he was informed that on the evening of the winter solstice at the time when the Pleiades stars with the meridian of the departure from the position value. Another test to know the time sincefrom the year.be considered by the last 50 years every winter solstice point was moved west along the equator of the value, which is of ancient China by way of a special independent-year-old has been the first difference, although much later than the age found in ancient Greece, but the value of precision have been slightly better than the Hipparcos value, in order to further explore the difference between year-old opened up a new path. On this basis, to-day for days, the age of the age 25 that the sidereal year the sun through the same two stars of the time interval and the tropical year the winter solstice the sun through the two-point intervals distinguish between the two, as well as calendar calculation accuracy of the relevant issues to prepare the conditions to improve.
Jiang yanastronomers about the eclipse was invented 380 Chong Law, the method is measured in the eclipse of the moon where the places, the time difference between the sun and the moon is half-Zhou degrees, so can more accurately infer the winter solstice when the sun places where degrees. This is good value for future generations of precession appear frequently provide effective basic method.
Nineteen years leap seven weeks before and after the use of the Run-up to thousands of years, to the Northern Liang Zhao Calendar of412 years until a turn for the better. Zhao 600 years given a new Run Run 221 weeks, this is his return and on the length ofdeepen understanding of the results, that is, he should return in less than the length of 365.2468 days, and on the length ofshould be on or about all fully confident 29.5306 do not suspect, and these two values is not astronomical seven Nineteen years leap beyond the coordination of laws, only the reform of the old Run weeks, before they could be no doubt that he has confirmed the above facts, there is no way out. Of course, this step still needs to be taken great courage.calendar year by taking the length of the accuracy of the return over the previous calendar on behalf of a substantial improvement on the Run-Zhou Zhao reforms are complementary and this is a bold and wise initiative. Since then, a new leap week figures showed a constant search to improve the situation of the good.
VI, Chan star map and other
Han has been observed as a result of improving equipment and promote the location of the stellar work of observation and as a result of astronomy and astrology, such as their own needs, the determination of a relatively complete service system of the day stars, rendering the stars form a relatively complete and star maps, become a social demand. Three Kingdoms period to make Chan Tai Shi Wu brilliantly completed this task. He collated summary Gann popular at that time, Shi andofficial39s three stars, and varies with the deposit sum up 283 stars out of government, the star of the 1464 Star service system throughout the day and star maps are ready, lay in our country Ancient stars in the traditional model of service system.
Liusong when Yuan Jia Qian vintage gucci lucite watch thirteen years in music 436 and seventeen years 440 years casting two celestial globe, Chan is the use of official systems of stars. Tang Dynastya step-by-step Tiange to the form of poetry Chan stars official system, as easy to learn by heart, was widespread. Tiange step but also all of the sky divided into 31 regions, the so-called three-Yuan Ziwei Yuan, Yuan andCity Sadakazu daysZoning Law. The Zoning Law and Chan stars official system has been used to modern times, is a unique ancient Chinese astronomy another characterization.
Here, we would also like the way this period records in the Sky two characteristics First, a variety of phenomena tend to complete the record, with the exception of the aforementioned phenomena existing records, there have been clear of sunspots and record of supernovae. Such as he-ping the first year BC 28 years in March, sunrise yellow, black large, such as gas money, Habitat Day Central , 26 appears on the sunspot time, image size and location, etc. made a clear record. Another example is Zhongping year AD 185 yearsin October, stars of the south gate of passengers, as large as a half feast,five colors, smaller, to eliminate the year after next June , 27 It is the world39s The earliest recorded supernova. Second, the increasingly detailed record of celestial phenomena, fine. Such as observation of the solar eclipse, not only records the date, and began to pay attention to the food points, position, orientation and the early losses from a loss and recovery time, such as a description of a round. Notes on the comet, the comet running routes, depending on line speed and the corresponding time, are lively and concise text to be painted. These phenomena show that the age-old tradition of not only records one after another, but at this time already have a mature form.
Section IV of the Northern and Southern Dynasties period Five Dynasties and the Sui and Tang dynasties the perfect astronomical calendar system
During this period the main features of the development of astronomy, the series tends to accurate astronomical data, and a number of new discoveries of astronomical phenomena, the mathematical calendar calculations and formulaic towards the close direction of the evolution of these ancient astronomical calendar of our system from the content and form, have reached a better state.
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