Old history in the sciences

Column has a lot of farming in the Almanac and astronomical knowledge. 24 solar terms it is based on a 12 month schedule. Each solar term fengqian song. In the absence of scientific instruments of the accumulation of scientific knowledge. Setting the inductive nature of the ancient wisdom. For example, the lyrics are written about autumn limit: "autumn rain-free summer, only half of all things collection, the limit if it rains every day, even if the seed is difficult to stay," This shows that autumn day if no rain, crops will crop failures, and the limit of the rain, crop will be strong not easily. Again, "ecliptic auspicious days" 4 words. Most people only know the equator, and what is the ecliptic is not so clear. Said in the Almanac of the ecliptic, is a projection of the orbit of the Earth's revolution extended to star, circle is 360 degrees of the ecliptic, transitional yellow of the Sun on the ecliptic path 15, taken as a solar term, just one year is one of the 24 solar terms. Zodiac line algorithm and calculation method of modern astronomy, is in line with science. Because of the Almanac covers the ancient people's consciousness, and life habits and mode of production, and many other historical information, almanac can be regarded as important documents of historical study. For example, Guo Tai Almanac researchers found that Almanac contents vary for each dynasty. When the Qing dynasty, Christian almanac by deleting all the taboos of the Taiping Heavenly Kingdom enacted only annotated solar term Sunday. Almanac of Xuantong years enacted, then against the published compatibility and incompatibility, punching, location, and this Lonelyness that s, Tai sui. Almanac of some special age also has special features.　　　　　　　In 1942 by the Shenyang races calendar for printing books, is a Japanese compilation called long Ze Chien, half length is Japan militarist propaganda content, is Japan's militarism evidence of cultural aggression. （谭丽)　（据《世界新闻报》）