第二，地球会运动的观点不符合古希腊人对万有引力的理解。
Second, the idea of an Earth that moved didn't fit in with the ancient Greeks' understanding of gravity.
四种基本力（万有引力、电磁力、强核力和弱核力）中的每一种都有一个理论上的旋钮。
Each of the four fundamental forces (gravity, electromagnetism, and the strong and weak nuclear forces) has a kind of theoretical knob.
当牛顿发现了万有引力、托马斯·爱迪生发明了灯泡时，他们的好奇心都得到了极大的满足。
When Newton discovered gravity, and when Thomas Edison invented the light bulb, their curiosity was greatly satisfied.
这是由万有引力作用产生的吗？
幻灯片出现：牛顿著名的万有引力公式。
slide-"Example: Newton's famous approximate formula for the gravitational force between two bodies.
这就是万有引力的性质，我们都很了解了。
牛顿发现万有引力与距离的二次方成反比。
Newton found the law of gravity, which goes like 1 over the square of the distance between the things gravitated.
幻灯片出现：一篮子苹果—牛顿和万有引力。
据称艾萨克·牛顿爵士通过苹果落地，发现了万有引力。
Sir Isaac Newton supposedly discovered gravity through the fall of an apple.
以这种方式理解万有引力，是纯数学的一个十分深刻推论。
And that is a rather deep purely mathematical consequence of understanding gravitation in this way.
其他小行星（图中红色部分）被万有引力吸进来。
物理学家努力了几十年将万有引力结合到量子力学。
Physicists have struggled to marry quantum mechanics with gravity for decades.
这就是，牛顿万有引力定理，他视作的。，万有引力。
And this now is Newton's Universal Law of Gravity, which he postulated... Universal Law of Gravity.
科学家将这个现象归因于暗能量——与万有引力相抵触的一种力。
Scientists attribute the phenomenon to dark energy, a force that repels gravity.
信使号对岩石层以及核心万有引力的描述和分析或许可以帮助解释。
Messenger's analysis of the surface rock, and of the gravity profile of the core, could help explain.
我们还学习过空间中的万有引力，关于这个知识点，大家翻一翻笔记。
And we have also seen gravitational attraction in space, and I will let you look at your notes for that.
我一直对万有引力颇感兴趣，也一直觉得它遗失了一些东西。
I have always been interested in the Law of Attraction, but always found there was something missing with it.
几十年来，物理学家们一直相信万有引力应该使宇宙的膨胀速度慢下来。
For decades physicists were convinced that gravity should be causing the expansion rate of the universe to slow.
暗能量产生一种与万有引力相反的排斥力，这种排斥力推动着宇宙膨胀。
Dark energy creates a repulsive force that counters gravity and is now tearing apart space-time.
现在先来看下基本的例子，把诸如万有引力那些的奇怪事物先放在一边。
Now take the fundamental case, forget about gravitation and weird things like that.
这样的量子跃迁能够以前所未有的精度验证万有引力——以及所有的推论。
These quantum jumps can test Newton's theory of gravity - and any variations from it - with unprecedented precision.
随着万有引力的挤压，中子星几乎完全由中子组成，不包含带有电荷的亚粒子。
Compressed tightly by gravity, they are composed almost entirely of neutrons, sub-atomic particles with no electric charge that form part of atoms.
暗物质可能并不是真的“实体”——它可能只是对万有引力古怪行为的误导性名称。
Dark matter might not really be "stuff" - it could just be a misleading name for the odd behaviour of gravity.
爱因斯坦提出万有引力是一种时空变形，在巨大的物体附近有严重的变形。
Einstein argued that gravity is really a warping of space-time, with the greatest distortions near the most massive objects.
但是这并没有意味着我们试图理解世界的热情有所减少，诸如牛顿对万有引力的研究一样。
But it does mean that our attempts to understand the world are reduced to the kind of thing that Newton did in case of gravitation.
传记作家把“发现万有引力”归功于他，如果他没有发现这一事实，我们会变成什么样呢？
One biographer credits him with "discovering gravitation," and where would we be without that?
“当你试着想出一个想法来摆脱万有引力的印象时，你需要保持一个无外界影响的平台”。
When you are trying to get an idea to survive the gravitational force of operations, you need to preserve those windows of non-stimulation.
这么一来牛顿提出的万有引力过程，我们把它视作工具主义，柏克莱将其普遍化。
So the lesson that Newton grew in the case of gravity and Berkeley generalized as we saw in his instrumentalism.
“因为存在一个物理定律，即万有引力，使得宇宙可以从无到有将自己创造出来的，”摘录提到。
"Because there is a law such as gravity, the Universe can and will create itself from nothing," the excerpt says.
“因为存在一个物理定律，即万有引力，使得宇宙可以从无到有将自己创造出来的，”摘录提到。
"Because there is a law such as gravity, the Universe can and will create itself from nothing," the excerpt says.
应用推荐