英语释义

1. the scalar quantity characteristic of a point in a gravitational field whose gradient equals the intensity of the field and equal to the work required to move a body of unit mass from given point to a point infinitely remote

片语

gravitational condensation potential重力势

gravitational potential coefficient引力位系数

gravitational condensation potential energy引力势能

gravitational potential model重力位模型

attraction potential引力势

scalar gravitational potential标量重力势

gravitational potential difference重力势差

gravitational potential field引力位场

geopotential重力势

gravitational field potential万有引力势

nonspherical gravitational potential非球形引力位

英汉例句

• so if i make a plot of the gravitational potential energy as a function of y, then i would get a straight line.

  因此如果我画一张,重力势能,受y变化的图，那么会得到一条直线。

• so this is a function y as a function of x and the curve itself represents effectively the gravitational potential energy.

  因此这是关于y的关系,曲线本身,很有效地代表了,重力势能。

• when i「m here, the gravitational potential energy increases in this direction.

  重力势能，朝这个方向增长,重力。

• what is important, of course, if we get the right answer for the gravitational potential energy, that when we move away from this object that the gravitational potential energy increases.

  重要的是，如果我们得到了重力,势能的正确值，当我们远离这个物体,重力势能就会,增加。

• we will, many, many times in the future, use the one over r relationship for gravitational potential energy.

  将来会有很多次，用到r和,重力势能之间的关系。

• of the gravitational potential energy...

  重力势能的关系。

• gravitational potential energy at any distance capital r that you please away from this object.

  ,重力势能,不管r是多少,距离这个物体多远。

• h2= we could now use the conservation of mechanical energy, and we could say, let us call arbitrarily the gravitational potential energy at point a, 0 let」s call that zero.

  ？，so，now，what，is，h2？，well，根据机械能守恒,我们知道，我们把点a的,重力势能，称之为。

• 1/2mv^2 and because of this enormous speed-- one-half mv squared - is horrendously high-- it is a conversion of gravitational potential energy to kinetic energy and then ultimately to heat.

  那么-,大的可怕,这是-,重力势能,转化为动能,最后变成热能,自然正以巨大的速度。

• let me first give you the formal definition of gravitational potential energy.

  我先给你一个对于,重力势能的形式定义。

• if i look at this result-- the sum of gravitational potential energy and kinetic energy is conserved - for gravitational force-- then it is immediately obvious where we put the zero of kinetic energy.

  如果看这个结果-,重力势能与动能之和,在重力作用下,是守恒的-,马上，很明显的发现,动能为0的地方。

• y and this is y... then the gravitational potential energy u this is u.

  这是。,那么这里的重力势能,这是。

• and so the gravitational potential mgy energy of this object is its own mg y, y so i have to know what this y is, and therefore i have to know what this distance is.

  因此物体的重力势能,等于，因此我必须知道，所以我要知道,这段距离是多少。

• now the gravitational potential energy 0 at infinity is fixed at zero.

  现在无穷远处的,重力势能为。

• when i「m here, gravitational potential energy ; increases in this way; the gravitational force is in this direction.

  重力势能，这样增长,重力;,是在这个方向,当我在这里。

• there is a conversion from gravitational potential energy to kinetic energy back to gravitational potential energy, and it will come to a stop here.

  这就是重力势能,转换到,动能，再回到,重力势能，最终停在这里。

• notice that the gravitational potential energy increases.

  注意，这里,重力势能是增加的。

• now, what we would like to do is we would like to convert all this gravitational potential energy into kinetic energy of that disk.

  现在要做的,就是要转化,所有这些重力势能,变成圆盘的动能。

• you might be winded doing it the second way, but when you get to the top and you are at the 60th story your gravitational potential is independent of how you got there.

  对于走路你可能很抓狂，但你一旦到了顶层,你就是在第60层,你的重力势能,与你如何到达那里无关。

• okay, my goal was to evaluate for you the gravitational potential energy the way that it is defined in general, not in a special case when we are near the earth.

  好了，我的目标是,用通常的方式,为你们评价重力势能，不是用一个特殊的,接近地球的案例。

• then this will have a positive gravitational potential energy, and this will have one that is higher than this one by this amount.

  那么它将是,正的重力势能，这样的话这点,就比另一点高。

• you can install a disk in your car, which i would call, then, a flywheel, and you can convert the gravitational potential energy.

  可以在车内装个圆盘，可以称之为飞轮，可以转化,重力势能。

• the matter that falls onto the neutron star because there is gravitational potential energy released, and so the matter is so hot that, in general, it」s highly ionized.

  掉在中子星上，在掉落过程中已加热,重力势能,被释放，物体变得那么热，事实上它被高度电离，被高度电力的物体。

• the formal definition is that the gravitational potential energy at a point p is the work that i, walter lewin, have to do to bring that mass from infinity to that point p.

  形式定义就是,它在点p的重力势能,等于我，将物体从无穷远处,移动至点p所做的功。

• m if i move from point a to point b, with a mass m in my hand, notice that the gravitational potential energy increases.

  我手里物体的重量，注意，重力势能,增加了,我必须做正功。

• so the slowdown, the 「braking」 is now done because of a conversion from your linear speed which comes from gravitational potential energy to the rotation of the disk.

  所以减速，剎车通过,能量的转换达到了,从，重力势能,转化到旋转圆盘上。

• notice the gravitational potential energy goes down.

  注意，重力势能,是减小的。

• so you're using, then, the conversion of gravitational potential energy to kinetic energy.

  所以你在利用，重力势能,转换成,动能。