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- He discoursed impressively on Newton's theory of gravity. 他讲述了牛顿的引力定律，给人以深刻的印象。
- A quantum theory of gravity is needed. 这时候你需要量子重力理论才行。
- In 1915, Einstein developed the theory of gravity called General Relativity. 在1915年，爱因斯坦发展了广义相对论引力理论。
- Much as relativity subsumed Newtonian physics, a quantum theory of gravity will ultimately subsume relativity. 就如同相对论将牛顿物理学给纳入一般，终究也可能会有个量子理论，将相对论给收编进来。
- This was the period when Newton began the research which resulted in the creation of his famous Theory of Gravity. 就在这期间,牛顿开始一项研究。经过这项研究,他创立了著名的重力理论。
- No. quantum field theory in curved space-time is just quantum mechanics in gravtiy background, not a theory of gravity. 也有的想在广义相对论的基础上重建量子力学（后者大概是弯曲时空中的量子力学或量子场论吧?）。
- At that time, the Newtonian theory of gravity and the concept of escape velocity were well known. 那时，牛顿引力理论和逃逸速度的观念是广为人知的。
- A natural way to overcome its limitations would be to subsume it in a quantum theory of gravity, such as string theory. 要克服这个限制的一个自然方法，就是将它纳入一个量子重力理论之中，例如弦论。
- The latter is a theory of gravity that ascribes that force’s effects to the warping of space itself. 后者是引力理论，认为引力自身扭曲了空间。
- Because the distortion of space is what produces gravity, this is how the diagrams form a quantum theory of gravity. 由于空间的扭曲就是重力的来源，这些图示便构成了重力的量子理论。
- String theory overcomes some of the obstacles to building a logically consistent quantum theory of gravity. 在建构没有矛盾的量子重力论时，弦论已克服了某些障碍。
- Furthermore, the term that Perelman added to the basic flow used by Hamilton arises in string theory, which is a quantum theory of gravity. 除此之外，帕瑞尔曼所加到汉密尔顿瑞奇流方程式中的项，也出现在弦论（一种重力的量子理论）之中。
- A quantum theory of gravity is a holy grail for a certain breed of physicist because all physics except for gravity is well described by quantum laws. 对于钻研某些研究的物理学家而言，量子重力论是最后的圣杯，因为除了重力之外，其他的物理都可以用量子定律来描述。
- Because general relativity deals in the geometry of spacetime, a quantum theory of gravity will in addition be a quantum theory of spacetime. 由于广义相对论处理的是时空的几何，重力的量子理论就更会是一个时空的量子理论。
- Einstein laid the foundations for the two skyscrapers of modern physics, special relativity and quantum mechanics, and created a new theory of gravity. 爱因斯坦不仅奠定了现代物理学两栋摩天大厦（狭义相对论与量子力学）的基础，还提出了新的重力理论。
- A very promising approach to a quantum theory of gravity is string theory, which some theoretical physicists have been exploring since the 1970s. 弦论是广被看好的一种建构量子重力论方式，一些理论物理学家自1970年代以来就在研究这项理论。
- The AdS/CFT correspondence set up the relation between the superstring theory which is a theory of gravity to supersymmetric gauge theory with no gravity at all. AdS/CFT对应将描述含有引力的超弦理论与AdS边上不含引力的超对称规范理论联系起来。
- Tycho Brahe: An important Danish astronomer of the 16th century. His ground breaking research allowed Sir Isaac Newton to come up with the theory of gravity. 16世纪一个重要的丹麦天文学家。他的地壳断裂研究让牛顿得以提出重力学理论。
- MY COLLEAGUES AND I developed the theory of loop quantum gravity while struggling with a long-standing problem in physics: Is it possible to develop a quantum theory of gravity? 我和同事发展了一套环圈量子重力的理论，来对付一个长久以来的物理问题：有可能发展出一套重力的量子理论吗？
- Kaluza and Klein noticed that Einstein's geometric theory of gravity might provide this connection if an additional spatial dimension existed, making spacetime five-dimensional. 卡鲁扎和克莱恩注意到，如果有一个额外的空间维度存在，则时空变成五个维度，那麽爱因斯坦关于重力的几何理论便能提供这种关联。
