B\u1eadt c\u00f4ng t\u1eafc l\u00ean, b\u00f3ng \u0111i\u1ec7n s\u00e1ng ngay l\u1eadp t\u1ee9c, nh\u01b0 ki\u1ec3u \u0111i\u1ec7n t\u1eeb c\u00f4ng t\u1eafc ch\u1ea1y \u0111\u1ebfn b\u00f3ng \u0111\u00e8n ch\u1eb3ng m\u1ea5t th\u1eddi gian ch\u00fat n\u00e0o. \u0110i\u1ec7n ch\u1ea1y m\u1edbi nhanh l\u00e0m sao !<\/p>\n\n\n\n
Qu\u1ea3 th\u1ef1c nh\u01b0 v\u1eady. Trong ch\u1edbp m\u1eaft b\u1ea1n b\u1eadt c\u00f4ng t\u1eafc, trong to\u00e0n m\u1ea1ch \u0111i\u1ec7n nhanh ch\u00f3ng l\u1eadp n\u00ean \u0111i\u1ec7n tr\u01b0\u1eddng. C\u00f3 r\u1ea5t nhi\u1ec1u electron t\u1ef1 do t\u1ed3n t\u1ea1i trong m\u1ea1ch \u0111i\u1ec7n. Ch\u00fang ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a \u0111i\u1ec7n tr\u01b0\u1eddng, chuy\u1ec3n \u0111\u1ed9ng nh\u1eb1m v\u1ec1 m\u1ed9t h\u01b0\u1edbng, h\u00ecnh th\u00e0nh d\u00f2ng \u0111i\u1ec7n. Khi d\u00f2ng \u0111i\u1ec7n \u0111i qua b\u00f3ng \u0111\u00e8n, \u0111\u00e8n li\u1ec1n s\u00e1ng l\u00ean ngay. V\u00ec v\u1eady, t\u1ed1c \u0111\u1ed9 truy\u1ec1n c\u1ee7a \u0111i\u1ec7n, tr\u00ean th\u1ef1c t\u1ebf l\u00e0 ch\u1ec9 t\u1ed1c \u0111\u1ed9 l\u1eadp n\u00ean \u0111i\u1ec7n tr\u01b0\u1eddng trong m\u1ea1ch \u0111i\u1ec7n. N\u00f3 b\u1eb1ng v\u1edbi t\u1ed1c \u0111\u1ed9 s\u00f3ng \u0111i\u1ec7n t\u1eeb, t\u1ee9c l\u00e0 300.000 km\/s.<\/p>\n\n\n\n
\u1ede \u0111\u00e2y, ch\u00fang ta kh\u00f4ng n\u00ean c\u00f3 s\u1ef1 l\u1eabn l\u1ed9n gi\u1eefa t\u1ed1c \u0111\u1ed9 truy\u1ec1n c\u1ee7a \u0111i\u1ec7n v\u1edbi t\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a electron trong v\u1eadt d\u1eabn. C\u1ea7n ph\u1ea3i bi\u1ebft r\u1eb1ng t\u1ed1c \u0111\u1ed9 c\u1ee7a electron chuy\u1ec3n \u0111\u1ed9ng v\u1ec1 m\u1ed9t h\u01b0\u1edbng nh\u1ea5t \u0111\u1ecbnh trong v\u1eadt d\u1eabn c\u00f2n ch\u01b0a \u0111\u1ebfn 1 mm\/s, c\u00f2n ch\u1eadm h\u01a1n ki\u1ebfn c\u01a1 \u0111\u1ea5y! \u0110i\u1ec1u \u0111\u00f3 gi\u1ed1ng nh\u01b0 tr\u01b0\u1eddng h\u1ee3p r\u1ea5t \u0111\u00f4ng ng\u01b0\u1eddi x\u1ebfp th\u00e0nh m\u1ed9t \u0111\u1ed9i ng\u0169 h\u00e0ng d\u1ecdc d\u00e0i d\u00e0i, c\u00f3 ng\u01b0\u1eddi \u1edf \u0111\u1eb1ng tr\u01b0\u1edbc h\u00f4 “\u0111i \u0111\u1ec1u b\u01b0\u1edbc”, ti\u1ebfng kh\u1ea9u l\u1ec7nh t\u1eeb ph\u00eda tr\u01b0\u1edbc truy\u1ec1n \u0111\u1ebfn sau \u0111u\u00f4i ch\u1ec9 c\u1ea7n c\u00f3 m\u1ed9t ch\u00fat x\u00edu th\u1eddi gian, c\u00f2n nh\u01b0 \u0111\u1ee3i cho c\u1ea3 \u0111\u1ed9i ng\u0169 \u0111i qua th\u00ec l\u1ea1i c\u1ea7n c\u00f3 th\u1eddi gian r\u1ea5t d\u00e0i. V\u00ec t\u1ed1c \u0111\u1ed9 lan truy\u1ec1n c\u1ee7a ti\u1ebfng h\u00f4 kh\u1ea9u l\u1ec7nh v\u00e0 t\u1ed1c \u0111\u1ed9 \u0111i b\u1ed9 c\u1ee7a ng\u01b0\u1eddi l\u00e0 hai s\u1ef1 vi\u1ec7c, hai c\u00e1i \u0111\u00f3 kh\u00e1c bi\u1ec7t nhau v\u00f4 c\u00f9ng, v\u00f4 c\u00f9ng l\u1edbn. T\u00ecnh h\u00ecnh t\u01b0\u01a1ng t\u1ef1 l\u00e0, trong v\u1eadt d\u1eabn \u0111\u00e2u \u0111\u00e2u c\u0169ng c\u00f3 electron t\u1ef1 do, nh\u1eefng electron n\u00e0y gi\u1ed1ng nh\u01b0 \u0111\u00e1m ng\u01b0\u1eddi x\u1ebfp th\u00e0nh m\u1ed9t h\u00e0ng d\u1ecdc d\u00e0i. T\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng \u0111\u1ecbnh h\u01b0\u1edbng c\u1ee7a electron t\u1ef1a nh\u01b0 t\u1ed1c \u0111\u1ed9 \u0111i b\u1ed9 c\u1ee7a ng\u01b0\u1eddi. C\u00f2n t\u1ed1c \u0111\u1ed9 l\u1eadp n\u00ean \u0111i\u1ec7n tr\u01b0\u1eddng trong to\u00e0n b\u1ed9 v\u1eadt d\u1eabn t\u1ef1a nh\u01b0 t\u1ed1c \u0111\u1ed9 lan truy\u1ec1n c\u1ee7a kh\u1ea9u l\u1ec7nh. V\u00ec v\u1eady, v\u1eeba b\u1eadt c\u00f4ng t\u1eafc l\u00ean, electron trong v\u1eadt d\u1eabn ch\u1ecbu s\u1ef1 ch\u1ec9 huy c\u1ee7a \u0111i\u1ec7n tr\u01b0\u1eddng h\u1ea7u nh\u01b0 \u0111\u1ed3ng lo\u1ea1t v\u00f9ng l\u00ean chuy\u1ec3n \u0111\u1ed9ng, c\u0169ng t\u1ee9c l\u00e0 sinh ra d\u00f2ng \u0111i\u1ec7n, l\u00e0m cho \u0111\u00e8n s\u00e1ng \u0111i\u1ec7n, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u1ee3i cho electron \u1edf ch\u1ed7 c\u00f4ng t\u1eafc chuy\u1ec3n \u0111\u1ed9ng \u0111\u1ebfn b\u00f3ng \u0111i\u1ec7n r\u1ed3i th\u00ec \u0111\u00e8n m\u1edbi b\u1eaft \u0111\u1ea7u ph\u00e1t s\u00e1ng.<\/p>\n\n\n\n
Ch\u00fang ta bi\u1ebft r\u1eb1ng, s\u00f3ng \u0111i\u1ec7n t\u1eeb \u0111\u00e0i ph\u00e1t thanh v\u00e0 \u0111\u00e0i truy\u1ec1n h\u00ecnh ph\u00e1t ra l\u00e0 m\u1ed9t lo\u1ea1i s\u00f3ng \u0111i\u1ec7n t\u1eeb, t\u1ed1c \u0111\u1ed9 lan truy\u1ec1n l\u00e0 300.000 km\/s. Tr\u00ean th\u1ef1c t\u1ebf, \u0111i\u1ec7n truy\u1ec1n trong v\u1eadt d\u1eabn l\u00e0 s\u00f3ng \u0111i\u1ec7n lan truy\u1ec1n trong v\u1eadt d\u1eabn. T\u1ed1c \u0111\u1ed9 c\u1ee7a c\u1ea3 hai \u0111\u1ec1u b\u1eb1ng nhau, t\u1ee9c l\u00e0 300.000 km\/s. V\u1eady th\u00ec v\u00ec sao s\u00f3ng \u0111i\u1ec7n do \u0111\u00e0i ph\u00e1t thanh, \u0111\u00e0i truy\u1ec1n h\u00ecnh ph\u00e1t, khi lan truy\u1ec1n tr\u00ean kh\u00f4ng, kh\u00f4ng c\u1ea7n ph\u1ea3i nh\u1edd v\u00e0o b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec, c\u00f2n \u0111i\u1ec7n th\u00ec ph\u1ea3i trong m\u1ed9t m\u1ea1ch \u0111i\u1ec7n k\u00edn m\u1edbi c\u00f3 th\u1ec3 lan truy\u1ec1n, sinh ra d\u00f2ng \u0111i\u1ec7n, l\u00e0m cho b\u00f3ng \u0111\u00e8n c\u00f3 \u0111i\u1ec7n s\u00e1ng l\u00ean nh\u1ec9?<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 do nguy\u00ean nh\u00e2n t\u1ea7n s\u1ed1 c\u1ee7a ch\u00fang kh\u00e1c nhau. Ki\u1ebfn th\u1ee9c v\u1eadt l\u00ed cho ch\u00fang ta bi\u1ebft, n\u0103ng l\u1ef1c b\u1ee9c x\u1ea1 c\u1ee7a s\u00f3ng \u0111i\u1ec7n ra ngo\u00e0i v\u1eadt d\u1eabn t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi lu\u1ef9 th\u1eeba b\u1eadc b\u1ed1n c\u1ee7a t\u1ea7n s\u1ed1. T\u1ea7n s\u1ed1 s\u1eed d\u1ee5ng c\u1ee7a \u0111\u00e0i ph\u00e1t thanh v\u00e0 \u0111\u00e0i truy\u1ec1n h\u00ecnh \u0111\u1ec1u t\u1eeb v\u00e0i tr\u0103m kilohec tr\u1edf l\u00ean, s\u00f3ng \u0111i\u1ec7n r\u1ea5t d\u1ec5 d\u00e0ng t\u1eeb \u0103ng ten ph\u00e1t x\u1ea1 ra. C\u00f2n t\u1ea7n s\u1ed1 c\u1ee7a \u0111i\u1ec7n xoay chi\u1ec1u 220 V th\u00f4ng th\u01b0\u1eddng ch\u1ec9 c\u00f3 50 Hz, th\u1ea5p h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi t\u1ea7n s\u1ed1 s\u00f3ng v\u00f4 tuy\u1ebfn \u0111i\u1ec7n. Cho n\u00ean s\u00f3ng \u0111i\u1ec7n trong \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n ho\u00e0n to\u00e0n kh\u00f4ng th\u1ec3 ch\u1ea1y ra ngo\u00e0i, m\u00e0 ch\u1ec9 c\u00f3 th\u1ec3 truy\u1ec1n \u0111i trong d\u00e2y d\u1eabn.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: S\u00f3ng \u0111i\u1ec7n t\u1eeb; \u00d4 nhi\u1ec5m \u0111i\u1ec7n t\u1eeb; \u00d4 nhi\u1ec5m m\u00f4i tr\u01b0\u1eddng.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
B\u1eadt c\u00f4ng t\u1eafc l\u00ean, b\u00f3ng \u0111i\u1ec7n s\u00e1ng ngay l\u1eadp t\u1ee9c, nh\u01b0 ki\u1ec3u \u0111i\u1ec7n t\u1eeb c\u00f4ng t\u1eafc ch\u1ea1y \u0111\u1ebfn b\u00f3ng \u0111\u00e8n ch\u1eb3ng m\u1ea5t th\u1eddi gian ch\u00fat n\u00e0o. \u0110i\u1ec7n ch\u1ea1y m\u1edbi nhanh l\u00e0m sao ! Qu\u1ea3 th\u1ef1c nh\u01b0 v\u1eady. Trong ch\u1edbp m\u1eaft b\u1ea1n b\u1eadt c\u00f4ng t\u1eafc, trong to\u00e0n m\u1ea1ch \u0111i\u1ec7n nhanh ch\u00f3ng l\u1eadp n\u00ean \u0111i\u1ec7n tr\u01b0\u1eddng. C\u00f3 […]<\/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":[15,7],"tags":[],"class_list":["post-5744","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5744","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=5744"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5744\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5744"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5744"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}