T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 10 – Arkady Leokum<\/p>\n\n\n\n
V\u1edbi t\u1ea5t c\u1ea3 c\u00e1c t\u00ednh ch\u1ea5t quen thu\u1ed9c c\u1ee7a m\u00ecnh, hi\u1ec7n t\u01b0\u1ee3ng t\u1eeb l\u00e0 bi\u1ec3u hi\u1ec7n c\u1ee7a m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd r\u1ea5t c\u01a1 b\u1ea3n, li\u00ean k\u1ebft cao v\u1edbi qu\u1ef9 \u0111\u1ea1o chuy\u1ec3n \u0111\u1ed9ng v\u00e0 h\u01b0\u1edbng t\u1ef1 quay c\u1ee7a electron trong c\u00e1c nguy\u00ean t\u1eed. S\u1ef1 s\u1eafp x\u1ebfp ch\u1eafc ch\u1eafn c\u1ee7a c\u00e1c electron t\u1ef1 quay n\u00e0y – nh\u01b0 c\u00e1c electron t\u1ef1 quay trong nguy\u00ean t\u1eed s\u1eaft ch\u1eb3ng h\u1ea1n – t\u1ea1o n\u00ean m\u1ed9t v\u1eadt li\u1ec7u c\u00f3 t\u00ednh t\u1eeb m\u1ea1nh nh\u01b0ng do m\u1ecdi v\u1eadt ch\u1ea5t \u0111\u1ec1u ch\u1ee9a electron t\u1ef1 quay n\u00ean ch\u00fang \u0111\u1ec1u c\u00f3 t\u00ednh t\u1eeb: n\u01b0\u1edbc, g\u1ed7 v\u00e0 k\u1ec3 c\u1ea3 s\u01b0\u01a1ng. Nguy\u00ean nh\u00e2n khi\u1ebfn ch\u00fang ta kh\u00f4ng ngh\u0129 r\u1eb1ng ch\u00fang l\u00e0 nam ch\u00e2m l\u00e0 b\u1edfi v\u00ec hi\u1ec7u \u1ee9ng t\u1eeb c\u1ee7a ch\u00fang kh\u00e1 y\u1ebfu, ch\u1ec9 b\u1eb1ng kho\u1ea3ng m\u1ed9t ph\u1ea7n t\u1ec9 c\u1ee7a l\u1ef1c t\u1eeb c\u1ee7a c\u00e1c kim lo\u1ea1i nh\u01b0 s\u1eaft. Do v\u1eady, c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng nam ch\u00e2m \u0111\u1ec3 h\u00fat m\u1ed9t c\u00e1i t\u0103m x\u1ec9a r\u0103ng l\u00ean nh\u01b0ng c\u1ea7n c\u00f3 m\u1ed9t t\u1eeb tr\u01b0\u1eddng m\u1ea1nh – g\u1ea5p 200.000 l\u1ea7n l\u1ef1c h\u00fat c\u1ee7a tr\u00e1i \u0111\u1ea5t. Nh\u01b0ng v\u1eabn c\u00f3 th\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c: nh\u00e0 v\u1eadt l\u00fd ng\u01b0\u1eddi \u0110\u1ee9c Werner Braunbeck h\u00edt l\u00ean \u0111\u01b0\u1ee3c m\u1ed9t m\u1ea9u nh\u1ecf graphite kh\u00f4ng nhi\u1ec5m t\u1eeb n\u0103m 1939 trong khi c\u00e1c nh\u00e0 v\u1eadt l\u00fd Ph\u00e1p c\u0169ng th\u1ef1c hi\u1ec7n th\u00ed nghi\u1ec7m tr\u00ean \u0111\u1ed1i v\u1edbi c\u00e1c gi\u1ecdt n\u01b0\u1edbc. Nh\u01b0ng th\u00e0nh t\u1ef1u tuy\u1ec7t di\u1ec7u nh\u1ea5t th\u00ec ph\u1ea3i r\u1ea5t l\u00e2u sau m\u1edbi \u0111\u1ebfn v\u00e0o n\u0103m 1997, khi m\u1ed9t nh\u00f3m \u0111\u1ee9ng \u0111\u1ea7u l\u00e0 ti\u1ebfn s\u0129 Andre Geim c\u1ee7a \u0110\u1ea1i h\u1ecdc Nijmegen \u1edf H\u00e0 Lan \u0111\u00e3 th\u00e0nh c\u00f4ng trong vi\u1ec7c h\u00edt l\u00ean m\u1ed9t gi\u1ecdt s\u01b0\u01a1ng. Tuy nhi\u00ean, vi\u1ec7c t\u1ea1o ra \u0111\u1ee7 t\u1eeb tr\u01b0\u1eddng \u0111\u1ec3 l\u00e0m vi\u1ec7c \u0111\u00f3 c\u1ea7n \u0111\u1ebfn c\u1ea3 m\u1ed9t nh\u00e0 m\u00e1y \u0111i\u1ec7n h\u1ea1t nh\u00e2n, c\u00f3 v\u1ebb qu\u00e1 \u0111\u1eaft \u0111\u1ecf cho m\u1ed9t m\u00e0n \u201c\u1ea3o thu\u1eadt\u201d, b\u1ea1n nh\u1ec9?<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 10 – Arkady Leokum V\u1edbi t\u1ea5t c\u1ea3 c\u00e1c t\u00ednh ch\u1ea5t quen thu\u1ed9c c\u1ee7a m\u00ecnh, hi\u1ec7n t\u01b0\u1ee3ng t\u1eeb l\u00e0 bi\u1ec3u hi\u1ec7n c\u1ee7a m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd r\u1ea5t c\u01a1 b\u1ea3n, li\u00ean k\u1ebft cao v\u1edbi qu\u1ef9 \u0111\u1ea1o chuy\u1ec3n \u0111\u1ed9ng v\u00e0 h\u01b0\u1edbng t\u1ef1 quay c\u1ee7a electron […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15],"tags":[],"class_list":["post-15935","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15935","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=15935"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15935\/revisions"}],"predecessor-version":[{"id":15936,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15935\/revisions\/15936"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=15935"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=15935"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=15935"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}