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第11行： − 虽然熵像温度一样是抽象概念，但每个人对熵的影响都有直观感觉。例如，人们区分一条视频是正放还是倒放通常很容易。倒放一段关于木头燃烧融化附近冰块的视频，原过程就会变为一滩水把一团烟雾变成了未燃烧的木头，并在这个过程中冻结了自己。令人惊讶的是，在任何情况下，绝大多数物理定律都没有被这些过程打破，但热力学第二定律是一个值得注意的例外。如果物理定律在时间倒转时同样适用，那么它就表现出了T对称，在这种情况下，熵使人们有能力分辨上述视频是正放还是倒放的，因为我们可以直观地发现，只有在正放时，场景的熵才会增加。基于热力学第二定律，熵阻止宏观过程呈现T对称。+
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Much like temperature, despite being an abstract concept, everyone has an intuitive sense of the effects of entropy. For example, it is often very easy to tell the difference between a video being played forwards or backwards. A video may depict a wood fire that melts a nearby ice block, played in reverse it would show that a puddle of water turned a cloud of smoke into unburnt wood and froze itself in the process. Surprisingly, in either case the vast majority of the laws of physics are not broken by these processes, a notable exception being the second law of thermodynamics. When a law of physics applies equally when time is reversed, it is said to show T-symmetry, in this case entropy is what allows one to decide if the video described above is playing forwards or in reverse as intuitively we identify that only when played forwards the entropy of the scene is increasing. Because of the second law of thermodynamics, entropy prevents macroscopic processes showing T-symmetry.
Much like temperature, despite being an abstract concept, everyone has an intuitive sense of the effects of entropy. For example, it is often very easy to tell the difference between a video being played forwards or backwards. A video may depict a wood fire that melts a nearby ice block, played in reverse it would show that a puddle of water turned a cloud of smoke into unburnt wood and froze itself in the process. Surprisingly, in either case the vast majority of the laws of physics are not broken by these processes, a notable exception being the second law of thermodynamics. When a law of physics applies equally when time is reversed, it is said to show T-symmetry, in this case entropy is what allows one to decide if the video described above is playing forwards or in reverse as intuitively we identify that only when played forwards the entropy of the scene is increasing. Because of the second law of thermodynamics, entropy prevents macroscopic processes showing T-symmetry.
虽然熵像温度一样是抽象概念，但每个人对熵的影响都有直观感觉。例如，人们区分一条视频是正放还是倒放通常很容易。倒放一段关于木头燃烧融化附近冰块的视频，原过程就会变为一滩水把一团烟雾变成了未燃烧的木头，并在这个过程中冻结了自己。令人惊讶的是，在任何情况下，绝大多数物理定律都没有被这些过程打破，但热力学第二定律是一个值得注意的例外。如果物理定律在时间倒转时同样适用，那么它就表现出了T对称，在这种情况下，熵使人们有能力分辨上述视频是正放还是倒放的，因为我们可以直观地发现，只有在正放时，场景的熵才会增加。基于热力学第二定律，熵会阻止宏观过程呈现T对称。