张衡翻译作业

1、张衡张衡是中国古代杰出的科学家。公元 78年他诞生在河南南阳，少年 时代生活比较贫困。但他努力学习，读了大量书籍，十多岁就能写出 很多出色的文章。他长期观察日月和行星的运行规律，知道月亮本身不发光，只是反 射了太阳光。他还正确解释了“冬天日短夜长，夏天日长夜短”的道 理。张衡在他写的书中，提出了“空间和时间都是无限的”理论。他 画出了中国第一张完备的星图，记录了 2500颗恒星，还记录了它们的亮度和出没时间。他的观测，与我们今天在同一个地点看到的星空相 近。公元117年，张衡创造了一台浑天仪。这是一个大铜球，靠水力来转 动，铜球转动的速度恰好和地球自转的速度相等。看着浑天仪，就知道哪颗星正在升

2、起，哪颗正在落下。这是世界上第一台用水力转动 的天文仪器。张衡最著名的发明创造是制作世界上第一台地动仪。地动仪上有八 条龙，对着八个方向。龙嘴是活的，每条龙的嘴里都有一颗铜球。有 一天，正对西方的龙嘴突然张开，铜球落了下来。张衡判断洛阳的西 面发生了地震。几天以后，果然得到报告，那一天那里发生了地震。张衡在公元139年逝世。Zhang HengZhang Heng, a great scientist in ancient China, who was bornedin Nanyang Hnan province in A D 78. The poor family in his childh

3、ood did n'tstop the progress of study inghard andconfronting with difficulties he read a great number of books. When he was ten around he could write lots of excellent articles.The long time observing about regulations of stars gave him the kno wledge that the moon can just reflect rather tha n

4、shining itself. He also gave the right expla nati on of "lo nger ni ghts and shorter daytime in winter while just the opposite in summer." He offered the theory "both the space and time are limitless. "I n his books. The first full-fledged star atlas which includes 2500 stars was

5、 made by Zhang Heng, it also recorded the brightness and appearing and disappearing time of these stars. The observation of Zhang Hengof stars was the same as today's in the same place.In A.D. 117, Zhang inven ted an armillary sphere which was a rotati ng copper ball drive n by waterpower and it

6、s rotati on speed was the same as the earth's spins. When you watch the armillarysphere the rising and falling of stars can be clearlypredicted. This was the first water-drive n astro no mical equipme nt in the world.The most famous inventionof Zhang Heng was the firstseismograph in the world, w

7、hich was set with eight dragons with their heads toward eight directions. Each dragon's mouth, which carried a copper ball, could ope n and close. On eday the drag on which faced the west suddenly opened up and dropped the copper ball. Zhang Heng believed that an earthquake took place to the west of L