{"id":2056,"date":"2025-09-01T04:54:09","date_gmt":"2025-09-01T04:54:09","guid":{"rendered":"https:\/\/nbaem.com\/?p=2056"},"modified":"2025-09-01T06:07:29","modified_gmt":"2025-09-01T06:07:29","slug":"what-are-magnetic-poles","status":"publish","type":"post","link":"https:\/\/nbaem.com\/vi\/what-are-magnetic-poles\/","title":{"rendered":"Gi\u1ea3i th\u00edch v\u1ec1 C\u1ef1c t\u1eeb trong Khoa h\u1ecdc v\u00e0 C\u00f4ng nghi\u1ec7p"},"content":{"rendered":"<p>B\u1ea1n \u0111\u00e3 t\u1eebng t\u1ef1 h\u1ecfi <strong>\u0111\u00fang th\u1ef1c s\u1ef1 v\u1ec1 c\u00e1c c\u1ef1c t\u1eeb<\/strong> v\u00e0 t\u1ea1i sao ch\u00fang l\u1ea1i quan tr\u1ecdng?<br \/>\nT\u1eeb vi\u1ec7c h\u01b0\u1edbng d\u1eabn <strong>b\u1ea3n \u0111\u1ed3 t\u1eeb<\/strong> su\u1ed1t nhi\u1ec1u th\u1ebf k\u1ef7 \u0111\u1ebfn vi\u1ec7c cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng <strong>\u0111\u1ed9ng c\u01a1, m\u00e1y ph\u00e1t \u0111i\u1ec7n v\u00e0 c\u1ea3m bi\u1ebfn<\/strong>, c\u00e1c c\u1ef1c t\u1eeb n\u1eb1m \u1edf trung t\u00e2m c\u1ee7a v\u00f4 s\u1ed1 c\u00f4ng ngh\u1ec7 m\u00e0 ch\u00fang ta s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y.<br \/>\nTrong h\u01b0\u1edbng d\u1eabn nhanh n\u00e0y, b\u1ea1n s\u1ebd c\u00f3 m\u1ed9t l\u1eddi gi\u1ea3i th\u00edch r\u00f5 r\u00e0ng, kh\u00f4ng r\u01b0\u1eddm r\u00e0 v\u1ec1 <strong>c\u00e1c c\u1ef1c B\u1eafc v\u00e0 c\u1ef1c Nam<\/strong>, c\u00e1ch ch\u00fang ho\u1ea1t \u0111\u1ed9ng, v\u00e0 t\u1ea1i sao ch\u00fang l\u1ea1i c\u1ea7n thi\u1ebft trong c\u1ea3 <strong>v\u1eadt l\u00fd<\/strong> v\u00e0 <strong>ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u1eadt li\u1ec7u t\u1eeb<\/strong>.<br \/>\nN\u1ebfu b\u1ea1n \u0111ang t\u00ecm ki\u1ebfm m\u1ed9t c\u00e1ch d\u1ec5 hi\u1ec3u \u0111\u1ec3 hi\u1ec3u v\u1ec1 c\u00e1c c\u1ef1c t\u1eeb m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi v\u00f4 s\u1ed1 thu\u1eadt ng\u1eef ph\u1ee9c t\u1ea1p\u2014h\u00e3y b\u1eaft \u0111\u1ea7u ngay th\u00f4i.<\/p>\n<h2>\u0110\u1ecbnh ngh\u0129a c\u01a1 b\u1ea3n v\u1ec1 c\u00e1c c\u1ef1c t\u1eeb<\/h2>\n<p>C\u00e1c c\u1ef1c t\u1eeb l\u00e0 <strong>hai \u0111\u1ea7u ri\u00eang bi\u1ec7t c\u1ee7a m\u1ed9t nam ch\u00e2m<\/strong> n\u01a1i l\u1ef1c t\u1eeb c\u1ee7a n\u00f3 m\u1ea1nh nh\u1ea5t. \u0110\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>C\u1ef1c B\u1eafc<\/strong> v\u00e0 <strong>C\u1ef1c Nam<\/strong>. Khi b\u1ea1n \u0111\u01b0a m\u1ed9t nam ch\u00e2m l\u1ea1i g\u1ea7n m\u1ed9t nam ch\u00e2m kh\u00e1c, <strong>\u0111\u1ea7u c\u1ef1c b\u1eafc c\u1ee7a m\u1ed9t nam ch\u00e2m s\u1ebd h\u00fat v\u00e0o \u0111\u1ea7u c\u1ef1c nam c\u1ee7a nam ch\u00e2m kh\u00e1c<\/strong>, trong khi <strong>c\u00e1c c\u1ef1c gi\u1ed1ng nhau \u0111\u1ea9y nhau<\/strong>.<\/p>\n<p>M\u1ed7i nam ch\u00e2m l\u00e0 m\u1ed9t <strong>\u0111i\u1ec3m c\u1ef1c t\u1eeb<\/strong>, c\u00f3 ngh\u0129a l\u00e0 n\u00f3 lu\u00f4n c\u00f3 c\u1ea3 c\u1ef1c b\u1eafc v\u00e0 c\u1ef1c nam. B\u1ea1n kh\u00f4ng th\u1ec3 c\u00f4 l\u1eadp m\u1ed9t c\u1ef1c t\u1eeb \u0111\u01a1n l\u1ebb \u2014 n\u1ebfu b\u1ea1n c\u1eaft m\u1ed9t nam ch\u00e2m l\u00e0m \u0111\u00f4i, m\u1ed7i m\u1ea3nh v\u1eabn s\u1ebd c\u00f3 c\u1ef1c b\u1eafc v\u00e0 c\u1ef1c nam ri\u00eang c\u1ee7a n\u00f3. T\u00ednh ch\u1ea5t \u0111\u1eb7c bi\u1ec7t n\u00e0y xu\u1ea5t ph\u00e1t t\u1eeb c\u00e1ch c\u00e1c tr\u01b0\u1eddng t\u1eeb \u0111\u01b0\u1ee3c t\u1ea1o ra \u1edf c\u1ea5p \u0111\u1ed9 nguy\u00ean t\u1eed, v\u1edbi c\u00e1c \u0111i\u1ec3m c\u1ef1c t\u1eeb nh\u1ecf b\u00e9 t\u1eeb c\u00e1c nguy\u00ean t\u1eed x\u1ebfp h\u00e0ng theo c\u00f9ng m\u1ed9t h\u01b0\u1edbng.<\/p>\n<p>C\u00e1c c\u1ef1c t\u1eeb c\u0169ng l\u00e0 c\u00e1c \u0111i\u1ec3m m\u00e0 <strong>\u0111\u01b0\u1eddng s\u1ee9c t\u1eeb<\/strong> t\u1eadp trung nhi\u1ec1u nh\u1ea5t. Nh\u1eefng \u0111\u01b0\u1eddng n\u00e0y xu\u1ea5t ph\u00e1t t\u1eeb c\u1ef1c b\u1eafc, u\u1ed1n cong qua kh\u00f4ng gian xung quanh, v\u00e0 \u0111i v\u00e0o t\u1ea1i c\u1ef1c nam, t\u1ea1o th\u00e0nh m\u1ed9t v\u00f2ng l\u1eb7p li\u00ean t\u1ee5c c\u1ee7a l\u1ef1c t\u1eeb quanh v\u00e0 xuy\u00ean qua nam ch\u00e2m. Kh\u00e1i ni\u1ec7m n\u00e0y l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 hi\u1ec3u c\u00e1ch c\u00e1c nam ch\u00e2m t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau v\u00e0 v\u1edbi c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c.<\/p>\n<h2>\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a c\u00e1c C\u1ef1c T\u1eeb<\/h2>\n<p><img decoding=\"async\" class=\"\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/Magnetic_Poles_Characteristics_Jye8Ie6xe.webp\" alt=\"\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a c\u00e1c c\u1ef1c t\u1eeb\" width=\"1249\" height=\"448\" \/><\/p>\n<p>C\u00e1c c\u1ef1c t\u1eeb c\u00f3 m\u1ed9t v\u00e0i \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh gi\u00fap nam ch\u00e2m ho\u1ea1t \u0111\u1ed9ng nh\u01b0 hi\u1ec7n t\u1ea1i. Quy t\u1eafc c\u01a1 b\u1ea3n nh\u1ea5t l\u00e0 <strong>c\u00e1c c\u1ef1c gi\u1ed1ng nhau \u0111\u1ea9y nhau v\u00e0 c\u00e1c c\u1ef1c kh\u00e1c nhau h\u00fat nhau<\/strong>. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 hai c\u1ef1c b\u1eafc \u0111\u1ea9y xa nhau, trong khi c\u1ef1c b\u1eafc v\u00e0 c\u1ef1c nam k\u00e9o l\u1ea1i g\u1ea7n nhau.<\/p>\n<p>C\u00e1c \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb lu\u00f4n b\u1eaft \u0111\u1ea7u t\u1eeb c\u1ef1c b\u1eafc c\u1ee7a nam ch\u00e2m v\u00e0 k\u1ebft th\u00fac t\u1ea1i c\u1ef1c nam c\u1ee7a n\u00f3. Nh\u1eefng \u0111\u01b0\u1eddng n\u00e0y th\u1ec3 hi\u1ec7n qu\u1ef9 \u0111\u1ea1o c\u1ee7a l\u1ef1c t\u1eeb, v\u00e0 ch\u00fang m\u1ea1nh nh\u1ea5t g\u1ea7n c\u00e1c c\u1ef1c.<\/p>\n<h2>C\u00e1c lo\u1ea1i C\u1ef1c T\u1eeb<\/h2>\n<p>C\u00e1c c\u1ef1c t\u1eeb c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n th\u00e0nh <strong>t\u1ef1 nhi\u00ean<\/strong> v\u00e0 <strong>nh\u00e2n t\u1ea1o<\/strong> lo\u1ea1i, v\u00e0 ch\u00fang c\u0169ng c\u00f3 th\u1ec3 l\u00e0 <strong>t\u1ea1m th\u1eddi<\/strong> or <strong>t\u1eeb t\u00ednh v\u0129nh vi\u1ec5n<\/strong>.<\/p>\n<h3>\u0110\u1ecba c\u1ef1c t\u1eeb t\u1ef1 nhi\u00ean<\/h3>\n<p>Tr\u00e1i \u0111\u1ea5t t\u1ef1 n\u00f3 gi\u1ed1ng nh\u01b0 m\u1ed9t chi\u1ebfc nam ch\u00e2m kh\u1ed5ng l\u1ed3 v\u1edbi m\u1ed9t <strong>\u0111\u1ecba c\u1ef1c b\u1eafc t\u1eeb<\/strong> v\u00e0 m\u1ed9t <strong>\u0111\u1ecba c\u1ef1c nam t\u1eeb<\/strong>. C\u00e1c c\u1ef1c n\u00e0y li\u00ean k\u1ebft v\u1edbi tr\u01b0\u1eddng t\u1eeb c\u1ee7a Tr\u00e1i \u0111\u1ea5t, \u0111\u00f3ng vai tr\u00f2 l\u1edbn trong vi\u1ec7c \u0111\u1ecbnh h\u01b0\u1edbng, di c\u01b0 c\u1ee7a \u0111\u1ed9ng v\u1eadt hoang d\u00e3 v\u00e0 b\u1ea3o v\u1ec7 ch\u00fang ta kh\u1ecfi b\u1ee9c x\u1ea1 m\u1eb7t tr\u1eddi.<\/p>\n<h3>\u0110\u1ecba c\u1ef1c t\u1eeb nh\u00e2n t\u1ea1o<\/h3>\n<p>Ch\u00fang t\u00f4i t\u1ea1o ra c\u00e1c nam ch\u00e2m v\u1edbi c\u00e1c c\u1ef1c \u1edf nhi\u1ec1u d\u1ea1ng:<\/p>\n<ul>\n<li><strong>Nam ch\u00e2m thanh<\/strong> \u2013 nam ch\u00e2m v\u0129nh c\u1eedu c\u1ed5 \u0111i\u1ec3n v\u1edbi c\u00e1c c\u1ef1c c\u1ed1 \u0111\u1ecbnh b\u1eafc v\u00e0 nam.<\/li>\n<li><strong>Nam ch\u00e2m \u0111i\u1ec7n<\/strong> \u2013 nam ch\u00e2m ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng d\u00f2ng \u0111i\u1ec7n, n\u01a1i b\u1ea1n c\u00f3 th\u1ec3 b\u1eadt ho\u1eb7c t\u1eaft c\u00e1c c\u1ef1c ho\u1eb7c \u0111\u1ea3o chi\u1ec1u ch\u00fang.<\/li>\n<li><strong>C\u00e1c b\u1ed9 ph\u1eadn t\u1eeb \u0111\u1eb7c bi\u1ec7t<\/strong> \u2013 thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p ho\u1eb7c ti\u00eau d\u00f9ng, n\u01a1i s\u1ee9c m\u1ea1nh v\u00e0 v\u1ecb tr\u00ed c\u1ee7a c\u1ef1c quan tr\u1ecdng.<\/li>\n<\/ul>\n<p><strong>\u0110\u1ecba c\u1ef1c t\u1ea1m th\u1eddi v\u00e0 v\u0129nh c\u1eedu<\/strong><\/p>\n<h2>Vai tr\u00f2 c\u1ee7a c\u00e1c c\u1ef1c t\u1eeb trong v\u1eadt l\u00fd v\u00e0 c\u00f4ng ngh\u1ec7<\/h2>\n<p>C\u00e1c c\u1ef1c t\u1eeb l\u00e0 ph\u1ea7n c\u1ed1t l\u00f5i trong c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a nam ch\u00e2m trong khoa h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7 h\u00e0ng ng\u00e0y. Trong <strong>l\u00fd thuy\u1ebft \u0111i\u1ec7n t\u1eeb<\/strong>, t\u1ea5t c\u1ea3 c\u00e1c nam ch\u00e2m \u0111\u1ec1u \u0111\u01b0\u1ee3c xem nh\u01b0 <strong>\u0111i\u1ec3m c\u1ef1c t\u1eeb<\/strong> v\u1edbi m\u1ed9t c\u1ef1c b\u1eafc v\u00e0 m\u1ed9t c\u1ef1c nam, v\u00e0 h\u00e0nh vi c\u1ee7a c\u00e1c c\u1ef1c n\u00e0y gi\u1ea3i th\u00edch c\u00e1ch d\u00f2ng \u0111i\u1ec7n v\u00e0 tr\u01b0\u1eddng t\u01b0\u01a1ng t\u00e1c. Nguy\u00ean t\u1eafc n\u00e0y l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a nhi\u1ec1u thi\u1ebft b\u1ecb \u0111i\u1ec7n.<\/p>\n<p>In <strong>\u0111\u1ed9ng c\u01a1 v\u00e0 m\u00e1y ph\u00e1t \u0111i\u1ec7n<\/strong>, c\u00e1c c\u1ef1c t\u1eeb t\u1ea1o ra l\u1ef1c bi\u1ebfn chuy\u1ec3n chuy\u1ec3n \u0111\u1ed9ng th\u00e0nh \u0111i\u1ec7n n\u0103ng ho\u1eb7c \u0111i\u1ec7n n\u0103ng th\u00e0nh chuy\u1ec3n \u0111\u1ed9ng. C\u00e1c c\u1ef1c trong roto v\u00e0 stato t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau qua c\u00e1c tr\u01b0\u1eddng t\u1eeb c\u1ee7a ch\u00fang, t\u1ea1o ra m\u00f4-men xo\u1eafn ho\u1eb7c sinh d\u00f2ng \u0111i\u1ec7n.<\/p>\n<p><strong>C\u1ea3m bi\u1ebfn t\u1eeb<\/strong>\u2014 gi\u1ed1ng nh\u01b0 trong \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh, ph\u01b0\u01a1ng ti\u1ec7n giao th\u00f4ng v\u00e0 thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p\u2014s\u1eed d\u1ee5ng c\u00e1c c\u1ef1c t\u1eeb \u0111\u1ec3 ph\u00e1t hi\u1ec7n h\u01b0\u1edbng, v\u1ecb tr\u00ed ho\u1eb7c chuy\u1ec3n \u0111\u1ed9ng. Ch\u00fang \u0111\u1ecdc c\u00e1c thay \u0111\u1ed5i trong tr\u01b0\u1eddng t\u1eeb, th\u01b0\u1eddng do c\u00e1c c\u1ef1c c\u1ee7a nam ch\u00e2m v\u0129nh c\u1eedu t\u1ea1o ra. Trong <strong>thi\u1ebft b\u1ecb l\u01b0u tr\u1eef d\u1eef li\u1ec7u<\/strong> ch\u1eb3ng h\u1ea1n nh\u01b0 \u1ed5 c\u1ee9ng, c\u1ef1c t\u1eeb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 bi\u1ec3u di\u1ec5n d\u1eef li\u1ec7u nh\u1ecb ph\u00e2n b\u1eb1ng c\u00e1ch c\u0103n ch\u1ec9nh c\u00e1c mi\u1ec1n t\u1eeb nh\u1ecf th\u00e0nh h\u01b0\u1edbng b\u1eafc ho\u1eb7c nam.<\/p>\n<p>In <strong>khoa h\u1ecdc v\u1eadt li\u1ec7u t\u1eeb tr\u01b0\u1eddng<\/strong>, hi\u1ec3u bi\u1ebft v\u1ec1 c\u1ef1c t\u1eeb gi\u00fap c\u00e1c k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf nam ch\u00e2m m\u1ea1nh h\u01a1n, hi\u1ec7u qu\u1ea3 h\u01a1n. V\u1ecb tr\u00ed c\u1ef1c, h\u00ecnh d\u1ea1ng v\u00e0 ki\u1ec3m so\u00e1t tr\u01b0\u1eddng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t trong m\u1ecdi th\u1ee9 t\u1eeb \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n hi\u1ec7u su\u1ea5t cao \u0111\u1ebfn thi\u1ebft b\u1ecb ch\u1ea9n \u0111o\u00e1n y h\u1ecdc ti\u00ean ti\u1ebfn nh\u01b0 MRI. Ki\u1ebfn th\u1ee9c n\u00e0y c\u0169ng h\u01b0\u1edbng d\u1eabn s\u1ea3n xu\u1ea5t c\u00e1c lo\u1ea1i nam ch\u00e2m chuy\u00ean d\u1ee5ng\u2014nh\u01b0 nam ch\u00e2m neodymium (NdFeB) ho\u1eb7c ferrite\u2014ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c nhu c\u1ea7u c\u00f4ng nghi\u1ec7p \u0111\u1eb7c th\u00f9 t\u1ea1i th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam.<\/p>\n<h2>C\u1ef1c t\u1eeb c\u1ee7a Tr\u00e1i \u0110\u1ea5t M\u1ed9t Tr\u01b0\u1eddng H\u1ee3p \u0110\u1eb7c Bi\u1ec7t<\/h2>\n<p><img decoding=\"async\" class=\"\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/Earth_magnetic_pole_reversal_effects_W76a7U5UY.webp\" alt=\"\u1ea2nh h\u01b0\u1edfng c\u1ee7a vi\u1ec7c \u0111\u1ea3o chi\u1ec1u c\u1ef1c t\u1eeb c\u1ee7a Tr\u00e1i \u0110\u1ea5t\" width=\"1193\" height=\"671\" \/><\/p>\n<p>Ch\u00ednh Tr\u00e1i \u0110\u1ea5t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t nam ch\u00e2m kh\u1ed5ng l\u1ed3, v\u1edbi m\u1ed9t <strong>\u0111\u1ecba c\u1ef1c b\u1eafc t\u1eeb<\/strong> v\u00e0 m\u1ed9t <strong>\u0111\u1ecba c\u1ef1c nam t\u1eeb<\/strong> \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a s\u1eaft n\u00f3ng ch\u1ea3y trong l\u00f5i ngo\u00e0i c\u1ee7a n\u00f3. Chuy\u1ec3n \u0111\u1ed9ng n\u00e0y t\u1ea1o ra <strong>tr\u01b0\u1eddng t\u1eeb<\/strong>c\u1ee7a Tr\u00e1i \u0110\u1ea5t <strong>, m\u1ed9t qu\u00e1 tr\u00ecnh g\u1ecdi l\u00e0<\/strong>\u0111\u1ecba t\u1eeb tr\u01b0\u1eddng<\/p>\n<p>, gi\u00fap b\u1ea3o v\u1ec7 ch\u00fang ta kh\u1ecfi b\u1ee9c x\u1ea1 m\u1eb7t tr\u1eddi c\u00f3 h\u1ea1i v\u00e0 h\u01b0\u1edbng d\u1eabn la b\u00e0n \u0111\u1ec3 \u0111\u1ecbnh h\u01b0\u1edbng. <strong>M\u1ed9t \u0111i\u1ec3m \u0111\u1eb7c bi\u1ec7t v\u1ec1 c\u1ef1c t\u1eeb c\u1ee7a Tr\u00e1i \u0110\u1ea5t l\u00e0 ch\u00fang kh\u00f4ng c\u1ed1 \u0111\u1ecbnh. Theo th\u1eddi gian, ch\u00fang d\u1ecbch chuy\u1ec3n v\u1ecb tr\u00ed\u2014m\u1ed9t qu\u00e1 tr\u00ecnh g\u1ecdi l\u00e0<\/strong>d\u1ecbch chuy\u1ec3n t\u1eeb tr\u01b0\u1eddng <strong>\u2014v\u00e0, sau v\u00e0i tr\u0103m ngh\u00ecn n\u0103m, ch\u00fang th\u1ef1c s\u1ef1<\/strong>\u0111\u1ea3o ng\u01b0\u1ee3c<\/p>\n<p>. Trong qu\u00e1 tr\u00ecnh \u0111\u1ea3o ng\u01b0\u1ee3c c\u1ef1c t\u1eeb, ph\u00eda b\u1eafc tr\u1edf th\u00e0nh ph\u00eda nam v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Nh\u1eefng l\u1ea7n \u0111\u1ea3o ng\u01b0\u1ee3c n\u00e0y kh\u00f4ng x\u1ea3y ra trong m\u1ed9t \u0111\u00eam m\u00e0 k\u00e9o d\u00e0i h\u00e0ng ngh\u00ecn n\u0103m.<\/p>\n<ul>\n<li><strong>C\u00e1c thay \u0111\u1ed5i \u1edf c\u00e1c c\u1ef1c c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn:<\/strong> H\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb<\/li>\n<li><strong>\u2013 La b\u00e0n c\u00f3 th\u1ec3 c\u1ea7n hi\u1ec7u ch\u1ec9nh l\u1ea1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00ednh x\u00e1c.<\/strong> M\u1ea1ng l\u01b0\u1edbi truy\u1ec1n th\u00f4ng<\/li>\n<li><strong>V\u1ec7 tinh v\u00e0 l\u01b0\u1edbi \u0111i\u1ec7n<\/strong> \u2013 T\u0103ng c\u01b0\u1eddng b\u1ee9c x\u1ea1 m\u1eb7t tr\u1eddi c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 c\u1ed1 ho\u1eb7c m\u1ea5t \u0111i\u1ec7n.<\/li>\n<\/ul>\n<p>Hi\u1ec3u v\u1ec1 c\u00e1c c\u1ef1c c\u1ee7a Tr\u00e1i \u0111\u1ea5t kh\u00f4ng ch\u1ec9 d\u00e0nh cho c\u00e1c nh\u00e0 khoa h\u1ecdc\u2014n\u00f3 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 v\u1eadn t\u1ea3i bi\u1ec3n, h\u00e0ng kh\u00f4ng, th\u0103m d\u00f2 d\u1ea7u kh\u00ed v\u00e0 c\u00f4ng ngh\u1ec7 kh\u00f4ng gian t\u1ea1i Vi\u1ec7t Nam, nh\u1eefng ng\u00e0nh ph\u1ee5 thu\u1ed9c v\u00e0o <strong>\u0111\u1ecdc ch\u00ednh x\u00e1c t\u1eeb tr\u01b0\u1eddng<\/strong>.<\/p>\n<h2>C\u1ef1c t\u1eeb trong ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u1eadt li\u1ec7u t\u1eeb t\u00ednh<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/Magnetic_Poles_in_Industrial_Magnets_b0vDp1zgY.webp\" alt=\"C\u00e1c c\u1ef1c t\u1eeb trong nam ch\u00e2m c\u00f4ng nghi\u1ec7p\" \/><\/p>\n<p>Hi\u1ec3u v\u1ec1 c\u00e1c c\u1ef1c t\u1eeb l\u00e0 ch\u00eca kh\u00f3a khi thi\u1ebft k\u1ebf v\u00e0 cung c\u1ea5p v\u1eadt li\u1ec7u t\u1eeb cho c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau t\u1ea1i Vi\u1ec7t Nam. C\u00e1ch s\u1eafp x\u1ebfp c\u1ef1c B\u1eafc v\u00e0 c\u1ef1c Nam c\u1ee7a nam ch\u00e2m \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 m\u1ea1nh, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 ph\u00f9 h\u1ee3p c\u1ee7a n\u00f3 cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. T\u1eeb l\u1ef1c gi\u1eef \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a c\u1ea3m bi\u1ebfn, c\u00e1ch s\u1eafp x\u1ebfp c\u1ef1c c\u00f3 th\u1ec3 quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t c\u1ee7a s\u1ea3n ph\u1ea9m.<\/p>\n<p>T\u1ea1i NBAEM, ch\u00fang t\u00f4i l\u00e0m vi\u1ec7c v\u1edbi m\u1ed9t lo\u1ea1t c\u00e1c <strong>v\u1eadt li\u1ec7u t\u1eeb t\u00ednh<\/strong> s\u1ea3n ph\u1ea9m ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t Vi\u1ec7t Nam. Bao g\u1ed3m:<\/p>\n<ul>\n<li><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/nbaem.com\/vi\/products\/neodymium-magnet\/\" target=\"_blank\" rel=\"noopener\"><strong>Nam ch\u00e2m NdFeB (Neodymium-Iron-Boron)<\/strong> <\/a><\/span>\u2013 Nam ch\u00e2m hi\u1ec7u su\u1ea5t cao v\u1edbi c\u1ef1c t\u1eeb m\u1ea1nh, l\u00fd t\u01b0\u1edfng cho \u0111\u1ed9ng c\u01a1 nh\u1ecf g\u1ecdn, m\u00e1y ph\u00e1t \u0111i\u1ec7n v\u00e0 thi\u1ebft b\u1ecb ch\u00ednh x\u00e1c.<\/li>\n<li><a href=\"https:\/\/nbaem.com\/vi\/products\/ceramic-magnet\/\" target=\"_blank\" rel=\"noopener\"><strong><span style=\"color: #ff6600;\">Nam ch\u00e2m ferrite<\/span><\/strong><\/a> \u2013 Nam ch\u00e2m ti\u1ebft ki\u1ec7m chi ph\u00ed, ch\u1ed1ng \u0103n m\u00f2n, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong loa, thi\u1ebft b\u1ecb gia d\u1ee5ng v\u00e0 ph\u1ee5 ki\u1ec7n \u00f4 t\u00f4.<\/li>\n<\/ul>\n<p>Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p <strong>gi\u1ea3i ph\u00e1p t\u1eeb t\u00ednh t\u00f9y ch\u1ec9nh<\/strong> d\u1ef1a tr\u00ean c\u1ea5u h\u00ecnh c\u1ef1c, h\u00ecnh d\u1ea1ng, l\u1edbp ph\u1ee7 v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 tr\u01b0\u1eddng y\u00eau c\u1ea7u. D\u00f9 l\u00e0 cho thi\u1ebft b\u1ecb t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p, thi\u1ebft b\u1ecb y t\u1ebf hay d\u1ee5ng c\u1ee5 \u0111i\u1ec7n, vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh c\u1ef1c t\u1eeb ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec7m v\u1ee5 \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/p>\n<p>B\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o c\u00e1ch c\u00e1c c\u1ef1c t\u01b0\u01a1ng t\u00e1c v\u00e0 \u00e1p d\u1ee5ng v\u1eadt li\u1ec7u t\u1eeb ph\u00f9 h\u1ee3p, ch\u00fang t\u00f4i gi\u00fap kh\u00e1ch h\u00e0ng Vi\u1ec7t Nam \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m t\u1ed1t h\u01a1n, tu\u1ed5i th\u1ecd l\u00e2u h\u01a1n v\u00e0 chi ph\u00ed v\u1eadn h\u00e0nh th\u1ea5p h\u01a1n.<\/p>\n<h2>Nh\u1eefng hi\u1ec3u l\u1ea7m ph\u1ed5 bi\u1ebfn v\u1ec1 c\u1ef1c t\u1eeb<\/h2>\n<p>Nhi\u1ec1u ng\u01b0\u1eddi ngh\u0129 r\u1eb1ng c\u1ef1c t\u1eeb c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i ri\u00eang l\u1ebb, nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng \u0111\u00fang. M\u1ed7i nam ch\u00e2m l\u00e0 m\u1ed9t <strong>\u0111i\u1ec3m c\u1ef1c t\u1eeb<\/strong>, c\u00f3 ngh\u0129a l\u00e0 n\u00f3 lu\u00f4n c\u00f3 c\u1ea3 c\u1ef1c B\u1eafc v\u00e0 c\u1ef1c Nam. N\u1ebfu b\u1ea1n c\u1eaft m\u1ed9t nam ch\u00e2m l\u00e0m \u0111\u00f4i, b\u1ea1n kh\u00f4ng thu \u0111\u01b0\u1ee3c c\u1ef1c B\u1eafc v\u00e0 c\u1ef1c Nam ri\u00eang bi\u1ec7t\u2014b\u1ea1n s\u1ebd c\u00f3 hai nam ch\u00e2m nh\u1ecf h\u01a1n, m\u1ed7i c\u00e1i c\u00f3 c\u1eb7p c\u1ef1c c\u1ee7a ri\u00eang n\u00f3.<\/p>\n<p>M\u1ed9t \u0111i\u1ec1u m\u00ea t\u00edn ph\u1ed5 bi\u1ebfn kh\u00e1c l\u00e0 <strong>c\u1ef1c t\u1eeb \u0111\u01a1n<\/strong> (m\u1ed9t c\u1ef1c t\u1eeb duy nh\u1ea5t kh\u00f4ng c\u00f3 c\u1ef1c \u0111\u1ed1i di\u1ec7n) t\u1ed3n t\u1ea1i trong c\u00e1c nam ch\u00e2m th\u00f4ng th\u01b0\u1eddng. Ch\u00fang kh\u00f4ng t\u1ed3n t\u1ea1i. Trong khi c\u00e1c nh\u00e0 khoa h\u1ecdc nghi\u00ean c\u1ee9u \u00fd t\u01b0\u1edfng v\u1ec1 c\u1ef1c \u0111\u01a1n trong v\u1eadt l\u00fd l\u00fd thuy\u1ebft, ch\u00fang ch\u01b0a bao gi\u1edd \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong t\u1ef1 nhi\u00ean ho\u1eb7c trong c\u00e1c nam ch\u00e2m th\u01b0\u01a1ng m\u1ea1i.<\/p>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t c\u00e1ch nhanh \u0111\u1ec3 ph\u00e2n bi\u1ec7t s\u1ef1 th\u1eadt v\u00e0 gi\u1ea3 m\u1ea1o:<\/p>\n<ul>\n<li><strong>Huy\u1ec1n tho\u1ea1i<\/strong>: B\u1ea1n c\u00f3 th\u1ec3 c\u00f4 l\u1eadp c\u1ef1c B\u1eafc ho\u1eb7c c\u1ef1c Nam.<br \/>\n<strong>S\u1ef1 th\u1eadt<\/strong>: C\u00e1c c\u1ef1c lu\u00f4n \u0111i \u0111\u00f4i trong nam ch\u00e2m th\u1ef1c t\u1ebf.<\/li>\n<li><strong>Huy\u1ec1n tho\u1ea1i<\/strong>: C\u00e1c c\u1ef1c c\u1ee7a Tr\u00e1i \u0110\u1ea5t ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c gi\u1ed1ng nh\u01b0 c\u1ee7a m\u1ed9t nam ch\u00e2m th\u1eb3ng.<br \/>\n<strong>S\u1ef1 th\u1eadt<\/strong>: C\u00e1c c\u1ef1c c\u1ee7a Tr\u00e1i \u0110\u1ea5t d\u1ecbch chuy\u1ec3n v\u00e0 th\u1eadm ch\u00ed c\u00f3 th\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c trong h\u00e0ng ngh\u00ecn n\u0103m.<\/li>\n<li><strong>Huy\u1ec1n tho\u1ea1i<\/strong>: Nam ch\u00e2m m\u1ea5t c\u1ef1c n\u1ebfu b\u1ecb g\u00e3y.<br \/>\n<strong>S\u1ef1 th\u1eadt<\/strong>: G\u00e3y nam ch\u00e2m ch\u1ec9 t\u1ea1o ra c\u00e1c nam ch\u00e2m nh\u1ecf h\u01a1n v\u1edbi c\u1ea3 hai c\u1ef1c c\u00f2n nguy\u00ean v\u1eb9n.<\/li>\n<\/ul>\n<p>Hi\u1ec3u c\u00e1c s\u1ef1 th\u1eadt n\u00e0y gi\u00fap khi l\u00e0m vi\u1ec7c v\u1edbi <strong>nam ch\u00e2m v\u0129nh c\u1eedu, nam ch\u00e2m \u0111i\u1ec7n, v\u00e0 v\u1eadt li\u1ec7u t\u1eeb t\u00ednh<\/strong>, d\u00f9 b\u1ea1n s\u1eed d\u1ee5ng ch\u00fang trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p, \u0111\u1ed9ng c\u01a1, ho\u1eb7c thi\u1ebft b\u1ecb h\u00e0ng ng\u00e0y.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u v\u1ec1 c\u1ef1c t\u1eeb l\u00e0 g\u00ec, c\u00e1c lo\u1ea1i, ch\u1ee9c n\u0103ng v\u00e0 vai tr\u00f2 c\u1ee7a ch\u00fang trong khoa h\u1ecdc, c\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p v\u1eadt li\u1ec7u t\u1eeb c\u1ee7a NBAEM<\/p>","protected":false},"author":1,"featured_media":2055,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2056","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/Earths_Magnetic_Poles_0vx67wq2H.webp","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2056","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/comments?post=2056"}],"version-history":[{"count":1,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2056\/revisions"}],"predecessor-version":[{"id":2059,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2056\/revisions\/2059"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/2055"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=2056"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=2056"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=2056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}