引力天文学

In the astronomy aspect, in 1672 Newton has formulated the reflecting telescope; He also explained not only the tide phenomenon, points out the tide the size the same lunar month related, moreover also has the relations with sun's attraction; Moreover, Newton extrapolated theoretically Earth is not a spheroid, but is the two-pole is slightly flat, the equator slightly drum, and explained the year old bad phenomenon from this and so on.

在天文学方面，1672年牛顿创制了反射望远镜；他还解释了潮汐的现象，指出潮汐的大小不但同朔望月有关，而且与太阳的引力也有关系；另外，牛顿从理论上推测出地球不是球体，而是两极稍扁、赤道略鼓，并由此说明了岁差现象等。

Precise measurement of the Newtonian gravitational constant G plays important roles in the fields of the gravitation, geophysics, astrophysics, and cosmology. A torsion balance with timeof-swing method to determine the gravitational constant G is proposed.

Torsion balance ；万有引力常数G的精确测量不仅对于弄清引力相互作用的性质非常重要，而且对于整个理论物理学、地球物理学、天文学和宇宙学等都具有重要意义。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。