Ask HN：时间循环与部分黑洞？
3 分•作者: kashyapPI•28 天前
你好。我是一名来自印度的九年级学生。<p>人工智能仅用于语法纠错。这些是我自己的问题。<p>我对两个概念感到困惑：<p>1. 热力学第二定律：它指出孤立系统的熵会增加。熵的减少需要做功。这是否意味着，虽然广义相对论中的时间膨胀会导致时间变慢，但时间却永远无法倒流，因为这需要熵的自发减少？<p>2. 广义相对论：在更强的引力场中，时间会变慢。作为一种心智模型，将其可视化为强引力下原子振动/运动速率降低，导致时钟变慢，这种理解是否部分正确？<p>我不是在提出新理论。我只是想找出我目前理解中的不足之处。请用高中水平解释。<p>感谢您的时间。
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Hello. I am a 9th grade student from India.<p>AI was used only for grammar correction. These are my own questions.<p>I am confused about two concepts:<p>1. Second Law of Thermodynamics: It states that the entropy of an isolated system increases. Decreasing entropy requires work. Does this imply that while time dilation from General Relativity can cause time to pass slower, time can never run backwards, as that would require a spontaneous decrease in entropy?<p>2. General Relativity: Time passes slower in stronger gravitational fields. As a mental model, is it partially correct to visualize this as the rate of atomic vibrations/motion decreasing in strong gravity, causing clocks to tick slower?<p>I am not proposing a new theory. I am asking to identify flaws in my current understanding. Please explain at a high school level.<p>Thank you for your time.