Time1ess sunbeam » Time1ess 新光 planetary » (形) 行星的; 流浪的, 飘泊不定的; 在轨道上运行的, 似行星的; 地球的, 全球的 BOTTOM HEM WITH PIPING IN CONTRAST COLOUR » 他与管道不同颜色的底部 ..
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我喜欢设想一艘在轨道上运行的艘宇宙飞船如何利用这种现象。
I like to imagine how a spaceship might be able to take advantage of this phenomenon, by orbiting it.
在轨道上运行的卫星总是要飞离地球,而结果总是被地心引力拉回来。
The satellite traveling in the orbit is always escaping from the earth only to be pulled back by gravity.
这幅图横跨大约5光年,是在轨道上运行的哈勃空间望远镜于1995年拍摄的。
This picture, spanning about 5 light years, was taken in 1995 by the orbiting Hubble Space Telescope.
And orbiting around this is a lone electron out at some distance r.
有一个单电子,在环原子核的轨道上运行。
I am going to say if that electron is to stay in its orbit, that is to say it doesn't flee the atom, it doesn't collapse under the nucleus then the sum of the forces on the electron must be zero No net force. And so that will be the sum of a dynamic force plus an electrostatic.
如果电子会保持在它的轨道上运行,既不脱离原子的话,它就不会由于原子核对它的吸引力而被瓦解掉,电子所受的合力一定为零,由于没有合力,所以电子所受力为动态力和静电力的总和。
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