<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>相对论 on Haifei's Home</title><link>https://haifei-home.pages.dev/tags/%E7%9B%B8%E5%AF%B9%E8%AE%BA/</link><description>Recent content in 相对论 on Haifei's Home</description><generator>Hugo</generator><language>zh-CN</language><managingEditor>hfwang132@gmail.com (hfwang132)</managingEditor><webMaster>hfwang132@gmail.com (hfwang132)</webMaster><copyright>This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.</copyright><lastBuildDate>Wed, 09 Jul 2025 19:23:54 +0800</lastBuildDate><atom:link href="https://haifei-home.pages.dev/tags/%E7%9B%B8%E5%AF%B9%E8%AE%BA/index.xml" rel="self" type="application/rss+xml"/><item><title>自旋为什么不是相对论效应</title><link>https://haifei-home.pages.dev/post_20250709_%E8%87%AA%E6%97%8B%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E6%98%AF%E7%9B%B8%E5%AF%B9%E8%AE%BA%E6%95%88%E5%BA%94/</link><pubDate>Wed, 09 Jul 2025 19:23:54 +0800</pubDate><author>hfwang132@gmail.com (hfwang132)</author><guid>https://haifei-home.pages.dev/post_20250709_%E8%87%AA%E6%97%8B%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E6%98%AF%E7%9B%B8%E5%AF%B9%E8%AE%BA%E6%95%88%E5%BA%94/</guid><description>&lt;p&gt;结论：整数自旋是经典效应，而半整数自旋是量子效应，跟相对论关系不大。&lt;/p&gt;
&lt;p&gt;原因很简单：1-自旋是 SO(3) 的最小的忠实（faithful）表示，而 1/2-自旋是 SU(2) 的最小的忠实表示。&lt;/p&gt;</description></item><item><title>洛伦兹变换的几何直觉</title><link>https://haifei-home.pages.dev/post_20210226_%E6%B4%9B%E4%BC%A6%E5%85%B9%E5%8F%98%E6%8D%A2%E7%9A%84%E5%87%A0%E4%BD%95%E7%9B%B4%E8%A7%89/</link><pubDate>Fri, 26 Feb 2021 23:05:45 +0800</pubDate><author>hfwang132@gmail.com (hfwang132)</author><guid>https://haifei-home.pages.dev/post_20210226_%E6%B4%9B%E4%BC%A6%E5%85%B9%E5%8F%98%E6%8D%A2%E7%9A%84%E5%87%A0%E4%BD%95%E7%9B%B4%E8%A7%89/</guid><description>&lt;p&gt;你不需要知道任何公式，也能对狭义相对论的各种现象（尺缩钟慢、双生子佯谬等）拥有直观的认识。&lt;/p&gt;
&lt;hr&gt;
&lt;h2 id="对伽利略变换做一点小小的修改"&gt;对伽利略变换做一点小小的修改&lt;/h2&gt;
&lt;p&gt;先来看经典的伽利略变换。在t-x图里，伽利略变换体现为剪切变换。点沿着平行于x轴的直线滑动。&lt;/p&gt;</description></item></channel></rss>