{"id":5614,"date":"2024-04-04T08:42:21","date_gmt":"2024-04-04T00:42:21","guid":{"rendered":"https:\/\/www.cililun.com\/?p=5614"},"modified":"2024-05-05T15:58:46","modified_gmt":"2024-05-05T07:58:46","slug":"ci_xing_da_xiao_de_ji_suan_gong_shi","status":"publish","type":"post","link":"https:\/\/www.cililun.com\/ci_xing_da_xiao_de_ji_suan_gong_shi\/","title":{"rendered":"\u78c1\u6027\u5927\u5c0f\u7684\u8ba1\u7b97\u516c\u5f0f"},"content":{"rendered":"

\u78c1\u6027\u5927\u5c0f\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3b\u8981\u6709\u4e24\u79cd\uff0c\u4e00\u79cd\u662f\u7528\u4e8e\u8ba1\u7b97\u7535\u78c1\u94c1<\/a>\u7684\u78c1\u6027\u5927\u5c0f\uff0c\u53e6\u4e00\u79cd\u662f\u7528\u4e8e\u8ba1\u7b97\u78c1\u94c1\u7684\u78c1\u529b\u5927\u5c0f\u3002<\/p>\n

\u5bf9\u4e8e\u7535\u78c1\u94c1\uff0c\u5176\u78c1\u6027\u5927\u5c0f\uff08\u78c1\u573a<\/a>\u5f3a\u5ea6B\uff09\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a<\/p>\n

B = \u03bco * i \/ (2 * \u03c0 * r)<\/p>\n

\u5176\u4e2d\uff0c\u03bco\u662f\u771f\u7a7a\u4e2d\u78c1\u901a\u7684\u5e38\u6570\uff0ci\u662f\u7535\u6d41\u7684\u5927\u5c0f\uff0cr\u662f\u8ddd\u79bb\u7535\u78c1\u94c1\u7684\u8ddd\u79bb\u3002\u8fd9\u4e2a\u516c\u5f0f\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u5728\u7ed9\u5b9a\u7535\u6d41\u548c\u8ddd\u79bb\u4e0b\uff0c\u7535\u78c1\u94c1\u7684\u78c1\u573a\u5f3a\u5ea6\u3002<\/p>\n

\u5bf9\u4e8e\u78c1\u94c1\uff0c\u5176\u78c1\u529b\u5927\u5c0f\uff08F\uff09\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a<\/p>\n

F = (\u03bc0 * m1 * m2) \/ (4 * \u03c0 * r^2)<\/p>\n

\u5176\u4e2d\uff0c\u03bc0\u662f\u771f\u7a7a\u4e2d\u7684\u78c1\u5bfc\u7387\uff0cm1\u548cm2\u5206\u522b\u662f\u4e24\u4e2a\u78c1\u6781\u7684\u78c1\u77e9\uff0cr\u662f\u4e24\u4e2a\u78c1\u6781\u4e4b\u95f4\u7684\u8ddd\u79bb\u3002\u8fd9\u4e2a\u516c\u5f0f\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u5728\u7ed9\u5b9a\u78c1\u77e9\u548c\u8ddd\u79bb\u4e0b\uff0c\u78c1\u94c1\u4ea7\u751f\u7684\u78c1\u529b\u5927\u5c0f\u3002<\/p>\n

\u8bf7\u6ce8\u610f\uff0c\u8fd9\u4e9b\u516c\u5f0f\u4ec5\u7528\u4e8e\u7406\u8bba\u8ba1\u7b97\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\u53ef\u80fd\u4f1a\u53d7\u5230\u591a\u79cd\u56e0\u7d20\u7684\u5f71\u54cd\uff0c\u5982\u6750\u6599\u6027\u8d28\u3001\u73af\u5883\u6e29\u5ea6\u3001\u78c1\u573a\u5206\u5e03\u7b49\u3002\u56e0\u6b64\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u51b5\u8fdb\u884c\u9002\u5f53\u7684\u8c03\u6574\u548c\u4fee\u6b63\u3002\u5f53\u7136\uff0c\u6211\u5f88\u4e50\u610f\u5e2e\u52a9\u60a8\u8fdb\u4e00\u6b65\u63a2\u8ba8\u78c1\u6027\u5927\u5c0f\u7684\u8ba1\u7b97\u3002\u5b9e\u9645\u4e0a\uff0c\u78c1\u6027\u5927\u5c0f\u7684\u6d4b\u91cf<\/a>\u548c\u8ba1\u7b97\u662f\u4e00\u4e2a\u76f8\u5f53\u590d\u6742\u7684\u9886\u57df\uff0c\u6d89\u53ca\u5230\u7535\u78c1\u5b66\u3001\u91cf\u5b50\u529b\u5b66\u548c\u7269\u8d28\u6027\u8d28\u7b49\u591a\u4e2a\u65b9\u9762\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u66f4\u6df1\u5165\u7684\u8ba8\u8bba\u548c\u76f8\u5173\u7684\u516c\u5f0f\uff1a<\/p>\n

### 1. \u78c1\u77e9\uff08Magnet<\/a>ic Moment\uff09<\/p>\n

\u78c1\u77e9\u662f\u63cf\u8ff0\u78c1\u4f53<\/a>\u78c1\u6027\u5f3a\u5f31\u7684\u7269\u7406\u91cf\u3002\u5bf9\u4e8e\u4e00\u4e2a\u70b9\u78c1\u5076\u6781\u5b50\uff0c\u5176\u78c1\u77e9 \\( \\vec{m} \\) \u53ef\u4ee5\u5b9a\u4e49\u4e3a\uff1a<\/p>\n

\\[ \\vec{m} = q \\vec{r} \\]<\/p>\n

\u5176\u4e2d \\( q \\) \u662f\u78c1\u8377\uff08\u7c7b\u4f3c\u4e8e\u7535\u8377\uff09\uff0c\\( \\vec{r} \\) \u662f\u78c1\u8377\u7684\u4f4d\u7f6e\u5411\u91cf\u3002\u5728\u5b9e\u9645\u60c5\u51b5\u4e2d\uff0c\u78c1\u8377\u5e76\u4e0d\u662f\u57fa\u672c\u7684\u7269\u7406\u91cf\uff0c\u800c\u662f\u7528\u7535\u6d41\u548c\u9762\u79ef\u6765\u63cf\u8ff0\u78c1\u77e9\uff0c\u4f8b\u5982\u5bf9\u4e8e\u4e00\u4e2a\u7535\u6d41\u73af\uff1a<\/p>\n

\\[ \\vec{m} = I \\vec{A} \\]<\/p>\n

\u5176\u4e2d \\( I \\) \u662f\u7535\u6d41\uff0c\\( \\vec{A} \\) \u662f\u73af\u9762\u7684\u9762\u79ef\u5411\u91cf\u3002<\/p>\n

### 2. \u78c1\u5316\u5f3a\u5ea6\uff08Magnetization\uff09<\/p>\n

\u78c1\u5316\u5f3a\u5ea6 \\( \\vec{M} \\) \u63cf\u8ff0\u4e86\u4e00\u4e2a\u7269\u8d28\u88ab\u78c1\u5316\u7684\u7a0b\u5ea6\uff0c\u5b83\u5b9a\u4e49\u4e3a\u5355\u4f4d\u4f53\u79ef\u5185\u7684\u78c1\u77e9\uff1a<\/p>\n

\\[ \\vec{M} = \\frac{\\sum \\vec{m}}{V} \\]<\/p>\n

\u5176\u4e2d \\( V \\) \u662f\u7269\u8d28\u7684\u4f53\u79ef\u3002<\/p>\n

### 3. \u78c1\u901a\u5bc6\u5ea6\uff08Magnetic Flux Density\uff09\u548c\u78c1\u573a\u5f3a\u5ea6\uff08Magnetic Field Strength\uff09<\/p>\n

\u78c1\u901a\u5bc6\u5ea6\uff08\u6216\u79f0\u4e3a\u78c1\u611f\u5e94\u5f3a\u5ea6\uff09\\( \\vec{B} \\) \u548c\u78c1\u573a\u5f3a\u5ea6 \\( \\vec{H} \\) \u662f\u63cf\u8ff0\u78c1\u573a\u7684\u4e24\u4e2a\u57fa\u672c\u7269\u7406\u91cf\u3002\u5b83\u4eec\u4e4b\u95f4\u7684\u5173\u7cfb\u901a\u8fc7\u7269\u8d28\u7684\u78c1\u5316\u6027\u8d28\u6765\u5b9a\u4e49\uff1a<\/p>\n

\\[ \\vec{B} = \\mu_0 (\\vec{H} + \\vec{M}) \\]<\/p>\n

\u5176\u4e2d \\( \\mu_0 \\) \u662f\u771f\u7a7a\u4e2d\u7684\u78c1\u5bfc\u7387\u3002\u5728\u771f\u7a7a\u4e2d\uff0c\\( \\vec{M} = 0 \\)\uff0c\u6240\u4ee5 \\( \\vec{B} = \\mu_0 \\vec{H} \\)\u3002<\/p>\n

### 4. \u78c1\u529b\uff08Magnetic Force\uff09<\/p>\n

\u78c1\u529b\u7684\u5927\u5c0f\u548c\u65b9\u5411\u53ef\u4ee5\u901a\u8fc7\u6d1b\u4f26\u5179\u529b\u516c\u5f0f\u6765\u8ba1\u7b97\uff0c\u5bf9\u4e8e\u8fd0\u52a8\u7535\u8377 \\( q \\) \u5728\u78c1\u573a \\( \\vec{B} \\) \u4e2d\u53d7\u5230\u7684\u529b\u4e3a\uff1a<\/p>\n

\\[ \\vec{F} = q (\\vec{v} \\times \\vec{B}) \\]<\/p>\n

\u5176\u4e2d \\( \\vec{v} \\) \u662f\u7535\u8377\u7684\u901f\u5ea6\u3002<\/p>\n

### 5. \u78c1\u80fd\uff08Magnetic Energy\uff09<\/p>\n

\u78c1\u80fd\u662f\u78c1\u573a\u4e2d\u5b58\u50a8\u7684\u80fd\u91cf\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u7ed9\u5b9a\u7684\u78c1\u573a\u914d\u7f6e\uff0c\u78c1\u80fd \\( W \\) \u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a<\/p>\n

\\[ W = \\frac{1}{2} \\int \\vec{B} \\cdot \\vec{H} \\, \\text{d}V \\]<\/p>\n

\u8fd9\u4e2a\u516c\u5f0f\u8868\u793a\u78c1\u80fd\u662f\u78c1\u901a\u5bc6\u5ea6\u548c\u78c1\u573a\u5f3a\u5ea6\u5728\u4f53\u79ef \\( V \\) \u4e0a\u7684\u70b9\u79ef\u7684\u4e00\u534a\u3002<\/p>\n

### 6. \u78c1\u963b<\/a>\uff08Magnetic Resistance\uff09\u548c\u78c1\u5bfc\uff08Magnetic Conductance\uff09<\/p>\n

\u78c1\u963b\u548c\u78c1\u5bfc\u662f\u63cf\u8ff0\u78c1\u573a\u4e2d\u7269\u8d28\u5bf9\u78c1\u901a\u963b\u788d\u6216\u4f20\u5bfc\u80fd\u529b\u7684\u7269\u7406\u91cf\u3002\u5b83\u4eec\u4e0e\u7535\u963b\u548c\u7535\u5bfc\u7684\u6982\u5ff5\u7c7b\u4f3c\u3002<\/p>\n

\u8bf7\u6ce8\u610f\uff0c\u4e0a\u8ff0\u516c\u5f0f\u548c\u6982\u5ff5\u662f\u5728\u7406\u60f3\u5316\u7684\u6761\u4ef6\u548c\u7b80\u5316\u7684\u60c5\u51b5\u4e0b\u7ed9\u51fa\u7684\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u60c5\u51b5\u53ef\u80fd\u66f4\u4e3a\u590d\u6742\u3002\u78c1\u6027\u5927\u5c0f\u7684\u7cbe\u786e\u8ba1\u7b97\u9700\u8981\u8003\u8651\u5230\u7269\u8d28\u7684\u78c1\u5316\u66f2\u7ebf\u3001\u6e29\u5ea6\u6548\u5e94\u3001\u78c1\u573a\u5206\u5e03\u3001\u6750\u6599\u7684\u4e0d\u5747\u5300\u6027\u7b49\u591a\u79cd\u56e0\u7d20\u3002\u56e0\u6b64\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u901a\u5e38\u9700\u8981\u901a\u8fc7\u5b9e\u9a8c\u6d4b\u91cf\u548c\u4e13\u95e8\u7684\u78c1\u6027\u6d4b\u91cf\u8bbe\u5907\u6765\u786e\u5b9a\u78c1\u6027\u5927\u5c0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u78c1\u6027\u5927\u5c0f\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3b\u8981\u6709\u4e24\u79cd\uff0c\u4e00\u79cd\u662f\u7528\u4e8e\u8ba1\u7b97\u7535\u78c1\u94c1\u7684\u78c1\u6027\u5927\u5c0f\uff0c\u53e6\u4e00\u79cd\u662f\u7528\u4e8e\u8ba1\u7b97\u78c1\u94c1\u7684\u78c1\u529b\u5927\u5c0f\u3002 \u5bf9\u4e8e\u7535\u78c1\u94c1\uff0c\u5176\u78c1\u6027\u5927\u5c0f\uff08\u78c1\u573a\u5f3a\u5ea6B\uff09\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a B = \u03bco * i \/ (2 * \u03c0 * r) \u5176\u4e2d\uff0c\u03bco\u662f\u771f\u7a7a\u4e2d\u78c1\u901a\u7684\u5e38\u6570\uff0ci\u662f\u7535\u6d41\u7684\u5927\u5c0f\uff0cr\u662f\u8ddd\u79bb\u7535\u78c1\u94c1\u7684\u8ddd\u79bb\u3002\u8fd9\u4e2a\u516c\u5f0f\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u5728\u7ed9\u5b9a\u7535\u6d41\u548c\u8ddd\u79bb\u4e0b\uff0c\u7535\u78c1\u94c1\u7684\u78c1\u573a\u5f3a\u5ea6\u3002 \u5bf9\u4e8e\u78c1\u94c1\uff0c\u5176\u78c1\u529b\u5927\u5c0f\uff08F\uff09\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a F = (\u03bc0 * m1 * m2) \/ (4 * \u03c0 * r^2) \u5176\u4e2d\uff0c\u03bc0\u662f\u771f\u7a7a\u4e2d\u7684\u78c1\u5bfc\u7387\uff0cm1\u548cm2\u5206\u522b\u662f\u4e24\u4e2a\u78c1\u6781\u7684\u78c1\u77e9\uff0cr\u662f\u4e24\u4e2a\u78c1\u6781\u4e4b\u95f4\u7684\u8ddd\u79bb\u3002\u8fd9\u4e2a\u516c\u5f0f\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u5728\u7ed9\u5b9a\u78c1\u77e9\u548c\u8ddd\u79bb\u4e0b\uff0c\u78c1\u94c1\u4ea7\u751f\u7684\u78c1\u529b\u5927\u5c0f\u3002 \u8bf7\u6ce8\u610f\uff0c\u8fd9\u4e9b\u516c\u5f0f\u4ec5\u7528\u4e8e\u7406\u8bba\u8ba1\u7b97\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\u53ef\u80fd\u4f1a\u53d7\u5230\u591a\u79cd\u56e0\u7d20\u7684\u5f71\u54cd\uff0c\u5982\u6750\u6599\u6027\u8d28\u3001\u73af\u5883\u6e29\u5ea6\u3001\u78c1\u573a\u5206\u5e03\u7b49\u3002\u56e0\u6b64\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u51b5\u8fdb\u884c\u9002\u5f53\u7684\u8c03\u6574\u548c\u4fee\u6b63\u3002\u5f53\u7136\uff0c\u6211\u5f88\u4e50\u610f\u5e2e\u52a9\u60a8\u8fdb\u4e00\u6b65\u63a2\u8ba8\u78c1\u6027\u5927\u5c0f\u7684\u8ba1\u7b97\u3002\u5b9e\u9645\u4e0a\uff0c\u78c1\u6027\u5927\u5c0f\u7684\u6d4b\u91cf\u548c\u8ba1\u7b97\u662f\u4e00\u4e2a\u76f8\u5f53\u590d\u6742\u7684\u9886\u57df\uff0c\u6d89\u53ca\u5230\u7535\u78c1\u5b66\u3001\u91cf\u5b50\u529b\u5b66\u548c\u7269\u8d28\u6027\u8d28\u7b49\u591a\u4e2a\u65b9\u9762\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u66f4\u6df1\u5165\u7684\u8ba8\u8bba\u548c\u76f8\u5173\u7684\u516c\u5f0f\uff1a ### 1. \u78c1\u77e9\uff08Magnetic Moment\uff09 \u78c1\u77e9\u662f\u63cf\u8ff0\u78c1\u4f53\u78c1\u6027\u5f3a\u5f31\u7684\u7269\u7406\u91cf\u3002\u5bf9\u4e8e\u4e00\u4e2a\u70b9\u78c1\u5076\u6781\u5b50\uff0c\u5176\u78c1\u77e9 \\( \\vec{m} \\) \u53ef\u4ee5\u5b9a\u4e49\u4e3a\uff1a \\[ \\vec{m} = q \\vec{r} \\] \u5176\u4e2d \\( q \\) \u662f\u78c1\u8377\uff08\u7c7b\u4f3c\u4e8e\u7535\u8377\uff09\uff0c\\( \\vec{r} \\) \u662f\u78c1\u8377\u7684\u4f4d\u7f6e\u5411\u91cf\u3002\u5728\u5b9e\u9645\u60c5\u51b5\u4e2d\uff0c\u78c1\u8377\u5e76\u4e0d\u662f\u57fa\u672c\u7684\u7269\u7406\u91cf\uff0c\u800c\u662f\u7528\u7535\u6d41\u548c\u9762\u79ef\u6765\u63cf\u8ff0\u78c1\u77e9\uff0c\u4f8b\u5982\u5bf9\u4e8e\u4e00\u4e2a\u7535\u6d41\u73af\uff1a \\[ \\vec{m} = I \\vec{A} \\] \u5176\u4e2d \\( I \\) \u662f […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[204],"tags":[114,225,224,192,89,194],"_links":{"self":[{"href":"https:\/\/www.cililun.com\/wp-json\/wp\/v2\/posts\/5614"}],"collection":[{"href":"https:\/\/www.cililun.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cililun.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cililun.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cililun.com\/wp-json\/wp\/v2\/comments?post=5614"}],"version-history":[{"count":1,"href":"https:\/\/www.cililun.com\/wp-json\/wp\/v2\/posts\/5614\/revisions"}],"predecessor-version":[{"id":6005,"href":"https:\/\/www.cililun.com\/wp-json\/wp\/v2\/posts\/5614\/revisions\/6005"}],"wp:attachment":[{"href":"https:\/\/www.cililun.com\/wp-json\/wp\/v2\/media?parent=5614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cililun.com\/wp-json\/wp\/v2\/categories?post=5614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cililun.com\/wp-json\/wp\/v2\/tags?post=5614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}