{"id":710392,"date":"2024-10-16T21:37:06","date_gmt":"2024-10-16T20:37:06","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=710392"},"modified":"2024-10-16T21:37:06","modified_gmt":"2024-10-16T20:37:06","slug":"lam-the-nao-o-do-tu-tinh-co-the-nang-len","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/lam-the-nao-o-do-tu-tinh-co-the-nang-len\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u1ed5 \u0111\u1ee1 t\u1eeb t\u00ednh c\u00f3 th\u1ec3 n\u00e2ng l\u00ean?"},"content":{"rendered":"<p class=\"sidekick\">\u1ed4 \u0111\u1ee1 t\u1eeb t\u00ednh c\u00f3 th\u1ec3 n\u00e2ng l\u00ean nh\u01b0 th\u1ebf n\u00e0o? B\u00e0i vi\u1ebft gi\u1ea3i th\u00edch nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a \u1ed5 \u0111\u1ee1 t\u1eeb t\u00ednh trong k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/lam_the_nao_o_do_tu_tinh_co_the_nang_len.png\" alt=\"L\u00e0m th\u1ebf n\u00e0o \u1ed5 \u0111\u1ee1 t\u1eeb t\u00ednh c\u00f3 th\u1ec3 n\u00e2ng l\u00ean?\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>L\u00e0m th\u1ebf n\u00e0o \u1ed5 \u0111\u1ee1 t\u1eeb t\u00ednh c\u00f3 th\u1ec3 n\u00e2ng l\u00ean?<\/h2>\n<p>Trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, \u1ed5 \u0111\u1ee1 t\u1eeb t\u00ednh (hay c\u00f2n g\u1ecdi l\u00e0 \u1ed5 \u0111\u1ee1 nam ch\u00e2m) l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn c\u00f3 kh\u1ea3 n\u0103ng n\u00e2ng v\u00e0 gi\u1eef c\u00e1c v\u1eadt th\u1ec3 m\u1ed9t c\u00e1ch kh\u00f4ng ti\u1ebfp x\u00fac. V\u1eady l\u00e0m th\u1ebf n\u00e0o m\u00e0 c\u00e1c \u1ed5 \u0111\u1ee1 t\u1eeb t\u00ednh n\u00e0y c\u00f3 th\u1ec3 n\u00e2ng l\u00ean \u0111\u01b0\u1ee3c? H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u00fang.<\/p>\n<h2>C\u01a1 s\u1edf l\u00fd thuy\u1ebft v\u1ec1 l\u1ef1c t\u1eeb<\/h2>\n<p>\u1ed4 \u0111\u1ee1 t\u1eeb t\u00ednh ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a t\u1eeb tr\u01b0\u1eddng. L\u1ef1c t\u1eeb l\u00e0 l\u1ef1c h\u00fat ho\u1eb7c l\u1ef1c \u0111\u1ea9y x\u1ea3y ra gi\u1eefa c\u00e1c nam ch\u00e2m khi ch\u00fang \u1edf g\u1ea7n nhau. Nguy\u00ean l\u00fd n\u00e0y \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 b\u1edfi \u0111\u1ecbnh lu\u1eadt Coulomb v\u1ec1 l\u1ef1c t\u0129nh \u0111i\u1ec7n:<\/p>\n<p><i>F = \\frac{k * |q1 * q2|}{r^2}<\/i><\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li><i>F<\/i> l\u00e0 l\u1ef1c t\u00e1c \u0111\u1ed9ng gi\u1eefa hai \u0111i\u1ec7n t\u00edch<\/li>\n<li><i>k<\/i> l\u00e0 h\u1eb1ng s\u1ed1 Coulomb<\/li>\n<li><i>q1<\/i> v\u00e0 <i>q2<\/i> l\u00e0 \u0111i\u1ec7n t\u00edch c\u1ee7a hai v\u1eadt th\u1ec3<\/li>\n<li><i>r<\/i> l\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111i\u1ec7n t\u00edch<\/li>\n<\/ul>\n<p>\u0110\u1ed1i v\u1edbi l\u1ef1c t\u1eeb, c\u00f4ng th\u1ee9c t\u01b0\u01a1ng t\u1ef1 c\u0169ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng nh\u01b0ng v\u1edbi t\u1eeb tr\u01b0\u1eddng (B) v\u00e0 d\u00f2ng \u0111i\u1ec7n (I).<\/p>\n<h2>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed5 \u0111\u1ee1 t\u1eeb t\u00ednh<\/h2>\n<p>\u1ed4 \u0111\u1ee1 t\u1eeb t\u00ednh s\u1eed d\u1ee5ng nam ch\u00e2m v\u0129nh c\u1eedu ho\u1eb7c nam ch\u00e2m \u0111i\u1ec7n \u0111\u1ec3 t\u1ea1o ra m\u1ed9t t\u1eeb tr\u01b0\u1eddng m\u1ea1nh. Khi \u0111\u1eb7t m\u1ed9t v\u1eadt th\u1ec3 g\u1ea7n t\u1eeb tr\u01b0\u1eddng n\u00e0y, l\u1ef1c t\u1eeb s\u1ebd \u0111\u1ea9y ho\u1eb7c h\u00fat v\u1eadt th\u1ec3 \u0111\u00f3, t\u1ea1o ra hi\u1ec7n t\u01b0\u1ee3ng n\u00e2ng l\u00ean m\u00e0 kh\u00f4ng c\u1ea7n ti\u1ebfp x\u00fac v\u1eadt l\u00fd.<\/p>\n<ol>\n<li>Nam ch\u00e2m v\u0129nh c\u1eedu: S\u1eed d\u1ee5ng nam ch\u00e2m t\u1ef1 nhi\u00ean ho\u1eb7c nh\u00e2n t\u1ea1o \u0111\u1ec3 t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng c\u1ed1 \u0111\u1ecbnh. V\u1eadt th\u1ec3 \u0111\u01b0\u1ee3c n\u00e2ng l\u00ean d\u1ef1a tr\u00ean l\u1ef1c \u0111\u1ea9y ho\u1eb7c h\u00fat gi\u1eefa nam ch\u00e2m v\u00e0 v\u1eadt th\u1ec3.<\/li>\n<li>Nam ch\u00e2m \u0111i\u1ec7n: S\u1eed d\u1ee5ng d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua cu\u1ed9n d\u00e2y \u0111\u1ec3 t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng. \u01afu \u0111i\u1ec3m c\u1ee7a nam ch\u00e2m \u0111i\u1ec7n l\u00e0 c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh l\u1ef1c t\u1eeb b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n.<\/li>\n<\/ol>\n<h2>\u1ee8ng d\u1ee5ng c\u1ee7a \u1ed5 \u0111\u1ee1 t\u1eeb t\u00ednh<\/h2>\n<p>\u1ed4 \u0111\u1ee1 t\u1eeb t\u00ednh c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf, t\u1eeb c\u00f4ng ngh\u1ec7 cao \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y:<\/p>\n<ul>\n<li><b>\u0110\u1ed9ng c\u01a1 t\u1eeb t\u00ednh:<\/b> Gi\u00fap gi\u1ea3m ma s\u00e1t v\u00e0 t\u0103ng hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/li>\n<li><b>T\u00e0u \u0111\u1ec7m t\u1eeb (Maglev):<\/b> S\u1eed d\u1ee5ng t\u1eeb tr\u01b0\u1eddng \u0111\u1ec3 n\u00e2ng v\u00e0 \u0111\u1ea9y t\u00e0u di chuy\u1ec3n tr\u00ean \u0111\u01b0\u1eddng ray v\u1edbi t\u1ed1c \u0111\u1ed9 cao.<\/li>\n<li><b>Thi\u1ebft b\u1ecb y t\u1ebf:<\/b> \u1ed4 \u0111\u1ee1 t\u1eeb t\u00ednh kh\u00f4ng ti\u1ebfp x\u00fac gi\u00fap b\u1ea3o v\u1ec7 c\u00e1c thi\u1ebft b\u1ecb y t\u1ebf nh\u1ea1y c\u1ea3m v\u00e0 gi\u1ea3m thi\u1ec3u g\u1ec9 \u1ed1c, h\u1ecfng h\u00f3c.<\/li>\n<\/ul>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>\u1ed4 \u0111\u1ee1 t\u1eeb t\u00ednh l\u00e0 m\u1ed9t ph\u00e1t minh k\u1ef9 thu\u1eadt d\u1ef1a tr\u00ean nguy\u00ean l\u00fd l\u1ef1c t\u1eeb, gi\u00fap n\u00e2ng v\u1eadt th\u1ec3 m\u00e0 kh\u00f4ng c\u1ea7n ti\u1ebfp x\u00fac v\u1eadt l\u00fd. C\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a \u1ed5 \u0111\u1ee1 t\u1eeb t\u00ednh \u0111ang ng\u00e0y c\u00e0ng ph\u00e1t tri\u1ec3n v\u00e0 mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch cho cu\u1ed9c s\u1ed1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u1ed4 \u0111\u1ee1 t\u1eeb t\u00ednh c\u00f3 th\u1ec3 n\u00e2ng l\u00ean nh\u01b0 th\u1ebf n\u00e0o? B\u00e0i vi\u1ebft gi\u1ea3i th\u00edch nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a \u1ed5 \u0111\u1ee1 t\u1eeb t\u00ednh trong k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>L\u00e0m th\u1ebf n\u00e0o \u1ed5 \u0111\u1ee1 t\u1eeb t\u00ednh c\u00f3 th\u1ec3 n\u00e2ng l\u00ean?<\/title>\n<meta name=\"description\" content=\"\u1ed4 \u0111\u1ee1 t\u1eeb t\u00ednh c\u00f3 th\u1ec3 n\u00e2ng l\u00ean nh\u01b0 th\u1ebf n\u00e0o? 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