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《汉书·五行志》记载了大量的自然灾害和当时的奇怪现象,从自然科学史的角度来看,其中很大一部分是有价值的材料,所包含的时间跨度之长、空间范围之广、内容之丰富都是以前的史籍所没有的。举凡天文学、地学、气象学、生命科学、物候学、技术史都有所涉及。笔者作了简单统计,自然现象变化的材料计200余条,奇怪现象50余条。包括地震、日食、水旱灾害、怪雨、太阳黑子、陨星、虫灾等等。这些丰富的材料,有的引起了自然科学家的重视,如关于太阳黑子的记载:“河平元年……三月己未,日出黄,有黑气大如钱,
“Han Five Elements” recorded a large number of natural disasters and the strange phenomenon at that time, from the point of view of the history of natural science, a large part of which is a valuable material, which contains a long time span, wide range of space , The content is rich in historical records do not have. Astronomy, earth science, meteorology, life sciences, phenology, history of technology are involved. The author made a simple statistics, changes in natural phenomena, more than 200 pieces of material, strange phenomenon more than 50 articles. Including earthquakes, solar eclipse, floods and droughts, strange rain, sunspots, meteorites, pests and so on. Some of these rich materials have aroused the attention of natural scientists. For example, the account of sunspots: "The first year of Heping was not in March, the sunrise was yellow,