[ { "id": 485946, "publisher": 640442, "username": "一位刷舒力的物竞生", "avatar": "https://img-avatar.eduzhixin.com/avatar/b46a38c888d6c6f823b8c85a8382a2d9/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "还有正则角动量，这些都是研究电磁场的一些非常好用的守恒量，基本上一套初态题就解出来了", "thumb_up_num": 8, "comment_num": 0, "created_at": "1775376427", "has_thumb_up": 0, "comment_list": [ ], "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_bcb9f001fbd2d37adfbf2c30d3eeae24" }, { "id": 486080, "publisher": 640442, "username": "一位刷舒力的物竞生", "avatar": "https://img-avatar.eduzhixin.com/avatar/b46a38c888d6c6f823b8c85a8382a2d9/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "\u003cp\u003e如果是摆线的话我这有图，直接用纯滚套xy坐标算就可以了\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003e程力上有原题，有兴趣可以算一下曲率半径\u003c/p\u003e\u003cp\u003e\u003cimg alt=\"IMG_20260405_205925.jpg\" src=\"https://img-forum.eduzhixin.com/forum/zhixin/uploadfiles/20260405/3fabd3e9469d43b826d71163497f3812af919a7cba.jpg\" width=\"100%\" data-filename=\"IMG_20260405_205925.jpg\"\u003e\u003cbr\u003e\u003c/p\u003e", "thumb_up_num": 7, "comment_num": 0, "created_at": "1775394384", "has_thumb_up": 0, "comment_list": [ ], "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_bcb9f001fbd2d37adfbf2c30d3eeae24" }, { "id": 486085, "publisher": 640442, "username": "一位刷舒力的物竞生", "avatar": "https://img-avatar.eduzhixin.com/avatar/b46a38c888d6c6f823b8c85a8382a2d9/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "\u003cdiv\u003e\u003cspan class=\"simditor-mention\" href=\"/homepage/UID_e3234ef5c0d57a9a03631a430edf0c25\" data-mention=\"true\" contenteditable=\"false\" target=\"_blank\" data-userid=\"637565\"\u003e@飞燕草素(是白芥呀)\u003c/span\u003e还有老师，就是呢这个是涉及到量子力学，但是呢，它主要是为了给电子延迟势李维势作出解释，而且这个知识点与高中相差甚远，而且老师这主要是拉格朗日力学和哈密顿力学的内容，直接用实例论证有多余项是可以，但是呢，还是建议老师引入一些类似拉格朗日量的理论力学知识，会比较好的解释。。。因为这主要是理论力学的内容，高中呢用正交分解和换系也是能做的，但是呢，强行引入一个不严谨的概念就会出现概念混淆的情况，大概就是背个公式就好了，不要强行去用现阶段的知识去理解，要不然就会出现一些小问题。。\u003c/div\u003e", "thumb_up_num": 7, "comment_num": 1, "created_at": "1775395193", "has_thumb_up": 0, "comment_list": [ { "id": 756035, "publisher": 637565, "username": "白芥", "avatar": "https://img-avatar.eduzhixin.com/avatar/da074d0d31b0f1366b5396b33d55f973/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "\u003cp\u003e计划分为多部分以保证受众的普遍性覆盖，前面的部分是给高中生看的，后面讲的真东西，故你可以看到\"CPhOr可跳过\"的字样\u003c/p\u003e", "thumb_up_num": 2, "did": 66124, "created_at": "1775397252", "rid": 486085, "reply_uid": 0, "reply_uname": "", "has_thumb_up": 0, "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_e3234ef5c0d57a9a03631a430edf0c25" } ], "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_bcb9f001fbd2d37adfbf2c30d3eeae24" }, { "id": 486165, "publisher": 434543, "username": "全世界无产者联合起来", "avatar": "https://img-avatar.eduzhixin.com/avatar/8cc3d653efda91cea0498950e42ef714/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "\u003cp\u003e第一个题目用的是配速法叭 圆周+漂移的叠加\u0026nbsp;\u003c/p\u003e\u003cp\u003e我记得“正则动量”对付随空间变化的磁场比较好用 你看看是不\u003c/p\u003e\u003cp\u003e物竞里面的正则动量是mv+qA守恒 其实说实话我也不会用（其实是我菜（\u003cbr\u003e\u003cbr\u003e\u003c/p\u003e", "thumb_up_num": 1, "comment_num": 1, "created_at": "1775403151", "has_thumb_up": 0, "comment_list": [ { "id": 756117, "publisher": 640442, "username": "一位刷舒力的物竞生", "avatar": "https://img-avatar.eduzhixin.com/avatar/b46a38c888d6c6f823b8c85a8382a2d9/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "是的使用拉格朗日力学推的，上述情况也是A电磁势表达为B(0,x,0)的形式时的特殊量", "thumb_up_num": 1, "did": 66124, "created_at": "1775405187", "rid": 486165, "reply_uid": 0, "reply_uname": "", "has_thumb_up": 0, "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_bcb9f001fbd2d37adfbf2c30d3eeae24" } ], "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_349cd485fc7ea9bf63f255190dafe88d" }, { "id": 486184, "publisher": 640442, "username": "一位刷舒力的物竞生", "avatar": "https://img-avatar.eduzhixin.com/avatar/b46a38c888d6c6f823b8c85a8382a2d9/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "\u003cp\u003e\u003cspan class=\"simditor-mention\" href=\"/homepage/UID_349cd485fc7ea9bf63f255190dafe88d\" data-mention=\"true\" contenteditable=\"false\" target=\"_blank\" data-userid=\"434543\"\u003e@全世界无产者联合起来\u003c/span\u003e你说的那个形式是这么推的\u003c/p\u003e\u003cp\u003e\u003cimg alt=\"Screenshot_2026-04-06-00-07-54-667.jpg\" src=\"https://img-forum.eduzhixin.com/forum/zhixin/uploadfiles/20260406/c22c45fc1c40f0b0da259878b10774e4d291fc1338.jpg\" width=\"100%\" data-filename=\"Screenshot_2026-04-06-00-07-54-667.jpg\"\u003e\u003cbr\u003e\u003c/p\u003e\u003cp\u003e\u003cspan class=\"simditor-mention\" href=\"/homepage/UID_349cd485fc7ea9bf63f255190dafe88d\" data-mention=\"true\" contenteditable=\"false\" target=\"_blank\" data-userid=\"434543\"\u003e\u003cbr\u003e\u003c/span\u003e \u003cbr\u003e\u003c/p\u003e", "thumb_up_num": 8, "comment_num": 3, "created_at": "1775405322", "has_thumb_up": 0, "comment_list": [ { "id": 756128, "publisher": 640442, "username": "一位刷舒力的物竞生", "avatar": "https://img-avatar.eduzhixin.com/avatar/b46a38c888d6c6f823b8c85a8382a2d9/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "\u003cp\u003e\u003cspan class=\"simditor-mention\" href=\"/homepage/UID_349cd485fc7ea9bf63f255190dafe88d\" data-mention=\"true\" contenteditable=\"false\" target=\"_blank\" data-userid=\"434543\"\u003e@全世界无产者联合起来\u003c/span\u003e还有不知佬刷舒力是有没有被舒力将科奥力当洛伦兹力来算的奇妙解法\u003c/p\u003e", "thumb_up_num": 1, "did": 66124, "created_at": "1775405658", "rid": 486184, "reply_uid": 0, "reply_uname": "", "has_thumb_up": 0, "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_bcb9f001fbd2d37adfbf2c30d3eeae24" }, { "id": 756535, "publisher": 434543, "username": "全世界无产者联合起来", "avatar": "https://img-avatar.eduzhixin.com/avatar/8cc3d653efda91cea0498950e42ef714/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "\u003cp\u003e这块我了解不多啊 我学物竞的时候四大基本上没碰\u003cimg src=\"https://static.eduzhixin.com/json/forum/image/emoji/images/哈哈哈1.png\" width=\"44\" height=\"44\" alt=\"哈哈哈1.png\" data-emoji=\"true\" data-non-image=\"true\"\u003e\u003c/p\u003e", "thumb_up_num": 1, "did": 66124, "created_at": "1775553789", "rid": 486184, "reply_uid": 0, "reply_uname": "", "has_thumb_up": 0, "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_349cd485fc7ea9bf63f255190dafe88d" }, { "id": 756538, "publisher": 640442, "username": "一位刷舒力的物竞生", "avatar": "https://img-avatar.eduzhixin.com/avatar/b46a38c888d6c6f823b8c85a8382a2d9/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "\u003cp\u003e不过有时理论力学在物竞里面挺好用的\u003c/p\u003e", "thumb_up_num": 0, "did": 66124, "created_at": "1775556979", "rid": 486184, "reply_uid": 434543, "reply_uname": "全世界无产者联合起来", "has_thumb_up": 0, "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_bcb9f001fbd2d37adfbf2c30d3eeae24" } ], "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_bcb9f001fbd2d37adfbf2c30d3eeae24" }, { "id": 486235, "publisher": 402931, "username": "Archer", "avatar": "https://img-avatar.eduzhixin.com/avatar/8decc7a09fb6d35d865a303c92477926/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "昨晚有点晚了所以没发，今天补发一下（字写的有点丑🙃）只是讲解一下配速法而已，以及运动的特点\u003cp\u003e\u003cimg alt=\"IMG_20260405_222311.jpg\" src=\"https://img-forum.eduzhixin.com/forum/zhixin/uploadfiles/20260406/51ac282a37f32752e8768c64ce2c9f1662527a7aaa.jpg\" width=\"100%\" data-filename=\"IMG_20260405_222311.jpg\"\u003e\u003cbr\u003e\u003c/p\u003e", "thumb_up_num": 2, "comment_num": 1, "created_at": "1775436175", "has_thumb_up": 0, "comment_list": [ { "id": 756173, "publisher": 402931, "username": "Archer", "avatar": "https://img-avatar.eduzhixin.com/avatar/8decc7a09fb6d35d865a303c92477926/s.jpg?x-oss-process=style/avatar\u0026t=202609122212", "content": "\u003cp\u003e这题是一开始由平行于电场入射的，我讲的这个是一开始为垂直于电场方向入射的（不过用同样的方法也能分析出来\u003c/p\u003e", "thumb_up_num": 1, "did": 66124, "created_at": "1775436327", "rid": 486235, "reply_uid": 0, "reply_uname": "", "has_thumb_up": 0, "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_35d9473593f3f44c72b3f4066e6c2410" } ], "avatar_dress_up_url": "", "avatar_dress_up_name": "", "avatar_dress_up_id": 0, "user_code": "UID_35d9473593f3f44c72b3f4066e6c2410" } ]