The more water in the basin, the higher the gravity signal.

该流域水越大，重力场变化的信号越强烈。

And so you're going to have the force of gravity.

重力等于地表附近重力场。

The rocket equation deals with moving from point A to point B in a gravitational field.

火箭方程涉及在重力场中从 A 点移动到 B 点。

The landmark lies just below the surface and has been revealed by measuring the subtle differences in the moon's gravitational field.

该标志就位于表面以下一点，测重力场的细微差别时被发现。

And that is a greater push than we have just from gravitational field strength.

这比我们仅仅从重力场强度得到的推力要大。

An enormous object, like the earth, generates a gravitational field, this field causes a downward pull on all objects near its surface.

一个巨大的物体，如地，产生重力场。这个场对所有它表面附近的物体都产生一个向下的力。

Well we have to change the gravitational field strength.

我们需要改变重力场强度。

The rare planet whose gravity field would not crush our bones is probably swimming in lethal gases.

那颗重力场不会压碎我们骨头的罕见行星，可能浸泡在致命的气体中。

And the gravitational field strength will be measured in newtons per kilogram.

重力场强度将以牛顿每千克为单位进行测。

It is simply m times g. Or the mass of the object times the gravitational field strength.

它就是质乘以重力场强度。或者说是物体的质乘以重力场强度。

The  force of gravity perpendicular equals mass times gravitational field strength times the cosine of  the incline angle.

重力的垂直分等于质乘以重力场强度再乘以斜面角度的余弦值。

So there's like this gravitational potential, which is like the shape of, you know, what the gravitational field is at different points.

因此，存在一种重力势能，它类似于在不同位置重力场的形态。

Well the 1.0 kilogram mass, to figure out the force of gravity, we simply take the mass times the gravitational field strength.

对于这个1.0千克的质，要计算重力的大小，我们只需将质乘以重力场强度。

What is the gravitational field strength?

什么是重力场强度？

The force of gravity parallel equals mass times gravitational field strength  times the sine of the incline angle.

重力的平行分等于质乘以重力场强度再乘以斜面角度的正弦值。

Well Newton's Second Law, it is going to accelerate in the direction of the field.

好吧，牛顿第二定律表明，它会在重力场的方向上加速。

It's the force gravity applies to all that stuff at one specific spot, so depending on the gravity where you are, your weight will be different.

它随著地点变，它是重力场对一个物品在特定一点的吸引力，所以你的位置影响你的重。

And the gravitational force exerted on a mass in a gravitational field is in  the same direction as the gravitational field.

并且，质在重力场中受到的重力作用方向与重力场的方向相同。

Remember it is a vector in the direction of the gravitational field.

记住它是指向重力场方向的矢。

And since this is all an exponent, it means that if we increase the strength of the gravity field we're in, this number goes up really quickly.

因为这都是一个指数，这意味着如果我们增加重力场的强度，这个数字会上升得非常快。