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开普勒第二定律

网络kepler's second law; Kpl-dl2.gif

开普勒第二定律

开普勒第二定律

开普勒第二定律

kepler's second law

机械专业英语词汇 -... ... kepler's laws 开普勒定律 kepler's second law 开普勒第二定律 kepler's third law 开普勒第三定律 ...

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维基百科:上载纪录/存档/2... ... Kpl-dl3.jpg"( 开普勒第三定律) Kpl-dl2.gif"( 开普勒第二定律) Kpl-dl1.gif"( 开普勒第一定律) ...

1

So, there's actually three laws, but let me just tell you about the second one that has a very nice vector interpretation .

其实有三个定律，让我先来告诉你们开普勒第二定律，其中对向量有一个很好的解释。

2

The second law , the law of areas , states that a line connecting a planet to the sun covers an equal area over equal periods of time .

开普勒第二定律，也即面积定律，指出从太阳到行星所联接的直线在相等时间内扫过同等的面积。

3

Kepler 's second law means that a planet's orbital speed changes with its distance from the sun .

开普勒第二定律指行星的轨道速度与其和太阳的距离。

4

So , I want to tell you a bit about Kepler's second law of celestial mechanics.

因此我想告诉你们，一些关于开普勒第二定律的知识。

5

But, Kepler's law would also be true , actually, if things were going away .

开普勒第二定律当然也对，如果东西远离了。

6

So, what Kepler's second law says is that the motion of planets is, first of all, they move in a plane .

开普勒第二定律说到，首先每个行星的运动都保持在同一平面内。

7

OK, so, in fact, what Kepler's second law says is that the acceleration is parallel to the position vector .

所以，开普勒第二定律说，加速度平行于位置矢量。

8

study on the secondly kepler ' slaw using a geometric method

利用几何方法研究开普勒第二定律

9

kepler ' s second law

开普勒第二定律

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