Ch\u00fang ta kh\u00f4ng l\u1ea1 l\u1eabm g\u00ec v\u1edbi c\u00e1i t\u1eeb laze. \u0110\u0129a CD m\u00e0 ch\u00fang ta nghe, g\u1ecdi l\u00e0 \u0111\u0129a h\u00e1t laze. \u0110\u0129a VCD m\u00e0 ch\u00fang ta xem, g\u1ecdi l\u00e0 \u0111\u0129a h\u00ecnh laze. Vi\u1ec7c ch\u1ebf t\u00e1c v\u00e0 s\u1eed d\u1ee5ng ch\u00fang \u0111\u1ec1u g\u1eafn li\u1ec1n v\u1edbi laze. Nh\u1eafc \u0111\u1ebfn laze, ng\u01b0\u1eddi ta hay li\u00ean t\u01b0\u1edfng \u0111\u1ebfn “v\u0169 kh\u00ed \u00e1nh s\u00e1ng ch\u1ebft ng\u01b0\u1eddi” trong ti\u1ec3u thuy\u1ebft khoa h\u1ecdc vi\u1ec5n t\u01b0\u1edfng. Laze c\u00f3 th\u1ec3 chi\u1ebfu xuy\u00ean t\u1ea5m th\u00e9p, th\u1eadm ch\u00ed \u0111\u1ebfn v\u1eadt ch\u1ea5t c\u1ee9ng ch\u1eafc nh\u01b0 kim c\u01b0\u01a1ng, khi n\u00f3 chi\u1ebfu r\u1ecdi v\u00e0o c\u0169ng s\u1ebd ho\u00e1 th\u00e0nh m\u1ed9t l\u00e0n kh\u00f3i xanh. V\u1eady r\u1ed1t cu\u1ed9c laze l\u00e0 g\u00ec?<\/p>\n\n\n\n
V\u1ec1 c\u01a1 b\u1ea3n, laze v\u00e0 \u00e1nh s\u00e1ng th\u00f4ng th\u01b0\u1eddng \u0111\u1ec1u l\u00e0 s\u00f3ng \u0111i\u1ec7n t\u1eeb c\u1ea3. T\u1ed1c \u0111\u1ed9 truy\u1ec1n \u0111i c\u1ee7a ch\u00fang \u0111\u1ec1u l\u00e0 300.000 km\/s. Song s\u1ef1 ph\u00e1t sinh v\u00e0 ph\u00e1t s\u00e1ng c\u1ee7a laze l\u1ea1i c\u00f3 ch\u1ed7 kh\u00e1c v\u1edbi \u00e1nh s\u00e1ng th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n\n\n
Ai c\u0169ng bi\u1ebft r\u1eb1ng, nguy\u00ean t\u1eed t\u1ea1o th\u00e0nh v\u1eadt ch\u1ea5t l\u00e0 do h\u1ea1t nh\u00e2n nguy\u00ean t\u1eed v\u00e0 c\u00e1c electron chuy\u1ec3n \u0111\u1ed9ng quanh n\u00f3 h\u1ee3p th\u00e0nh. Khi b\u00ean ngo\u00e0i cung c\u1ea5p cho nguy\u00ean t\u1eed m\u1ed9t n\u0103ng l\u01b0\u1ee3ng nh\u1ea5t \u0111\u1ecbnh, th\u00ec c\u00f3 kh\u1ea3 n\u0103ng \u0111\u01b0a electron sang qu\u1ef9 \u0111\u1ea1o xa ra ngo\u00e0i m\u1ed9t ch\u00fat. Khi \u1ea5y ch\u00fang ta n\u00f3i nguy\u00ean t\u1eed t\u1eeb tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng th\u1ea5p v\u1ecdt \u0111\u1ebfn tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng cao. Nguy\u00ean t\u1eed \u1edf tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng cao kh\u00f4ng \u1ed5n \u0111\u1ecbnh b\u1eb1ng \u1edf tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng th\u1ea5p. N\u00f3 c\u00f3 khuynh h\u01b0\u1edbng quay tr\u1edf v\u1ec1 tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng th\u1ea5p. Khi nguy\u00ean t\u1eed t\u1ef1 ph\u00e1t t\u1eeb tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng cao nh\u1ea3y v\u1ec1 tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng th\u1ea5p th\u00ec s\u1ebd ph\u00e1t s\u00e1ng. \u0110\u00f3 t\u1ee9c l\u00e0 b\u1ee9c x\u1ea1 t\u1ef1 ph\u00e1t. Ngo\u00e0i ra, n\u1ebfu nguy\u00ean t\u1eed \u0111ang \u1edf tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng cao m\u00e0 d\u00f9ng m\u1ed9t photon b\u00ean ngo\u00e0i g\u1ee3i d\u1eabn cho n\u00f3 tr\u1edf v\u1ec1 tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng th\u1ea5p, h\u01a1n n\u1eefa, t\u1ea7n s\u1ed1 c\u1ee7a photon b\u00ean ngo\u00e0i n\u00e0y m\u00e0 b\u1eb1ng t\u1ea7n s\u1ed1 ri\u00eang c\u1ee7a nguy\u00ean t\u1eed \u1edf tr\u1ea1ng th\u00e1i k\u00edch th\u00edch, khi \u1ea5y s\u1ebd g\u00e2y n\u00ean b\u1ee9c x\u1ea1 b\u1ecb k\u00edch th\u00edch c\u1ee7a nguy\u00ean t\u1eed. N\u00f3i \u0111\u01a1n gi\u1ea3n th\u00ec: \u00e1nh s\u00e1ng th\u00f4ng th\u01b0\u1eddng do nguy\u00ean t\u1eed c\u1ee7a v\u1eadt ch\u1ea5t b\u1ee9c x\u1ea1 t\u1ef1 ph\u00e1t sinh ra, c\u00f2n laze do nguy\u00ean t\u1eed c\u1ee7a v\u1eadt ch\u1ea5t b\u1ee9c x\u1ea1 b\u1ecb k\u00edch th\u00edch ph\u00e1t sinh ra.<\/p>\n\n\n\n
\u00c1nh s\u00e1ng th\u00f4ng th\u01b0\u1eddng trong tr\u1ea1ng th\u00e1i b\u1ee9c x\u1ea1 t\u1ef1 ph\u00e1t, \u0111\u1ed9ng t\u00e1c ph\u00e1t s\u00e1ng c\u1ee7a m\u1ed9t l\u01b0\u1ee3ng l\u1edbn nguy\u00ean t\u1eed ti\u1ebfn h\u00e0nh \u0111\u1ed9c l\u1eadp v\u1edbi nhau. Ch\u00fang ri\u00eang r\u1ebd ph\u00e1t ra \u00e1nh s\u00e1ng c\u00f3 t\u1ea7n s\u1ed1 kh\u00e1c nhau. C\u00e1i \u0111\u00f3 gi\u1ed1ng nh\u01b0 sau khi tan r\u1ea1p chi\u1ebfu b\u00f3ng, m\u1ecdi ng\u01b0\u1eddi k\u1ebb tr\u01b0\u1edbc ng\u01b0\u1eddi sau, m\u1ea1nh ai n\u1ea5y \u0111i t\u1ea3n v\u1ec1 c\u00e1c h\u01b0\u1edbng kh\u00e1c nhau. C\u00f2n laze th\u00ec l\u1ea1i kh\u00e1c, n\u00f3 l\u00e0 h\u00e0nh vi ph\u00e1t s\u00e1ng c\u1ee7a s\u1ed1 \u0111\u00f4ng nguy\u00ean t\u1eed do b\u1ee9c x\u1ea1 b\u1ecb k\u00edch th\u00edch sinh ra. Laze \u0111\u01b0\u1ee3c sinh ra nh\u01b0 v\u1eady th\u00ec t\u1ea7n s\u1ed1, pha, v\u00e0 h\u01b0\u1edbng \u0111\u1ec1u ho\u00e0n to\u00e0n th\u1ed1ng nh\u1ea5t l\u00e0m m\u1ed9t. C\u00e1i \u0111\u00f3 gi\u1ed1ng nh\u01b0 sau khi tan r\u1ea1p chi\u1ebfu b\u00f3ng, m\u1ecdi ng\u01b0\u1eddi x\u1ebfp v\u00e0o h\u00e0ng ng\u0169 nh\u1eb1m c\u00f9ng m\u1ed9t h\u01b0\u1edbng, c\u1ea5t nh\u1eefng b\u01b0\u1edbc ch\u00e2n \u0111\u1ed3ng \u0111\u1ec1u, theo ti\u1ebfng h\u00f4 “m\u1ed9t, hai, m\u1ed9t” m\u00e0 ngay ng\u1eafn ti\u1ebfn l\u00ean tr\u01b0\u1edbc.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: Laze; B\u1ee9c x\u1ea1 t\u1ef1 ph\u00e1t; B\u1ee9c x\u1ea1 b\u1ecb k\u00edch ph\u00e1t; Photon.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ch\u00fang ta kh\u00f4ng l\u1ea1 l\u1eabm g\u00ec v\u1edbi c\u00e1i t\u1eeb laze. \u0110\u0129a CD m\u00e0 ch\u00fang ta nghe, g\u1ecdi l\u00e0 \u0111\u0129a h\u00e1t laze. \u0110\u0129a VCD m\u00e0 ch\u00fang ta xem, g\u1ecdi l\u00e0 \u0111\u0129a h\u00ecnh laze. Vi\u1ec7c ch\u1ebf t\u00e1c v\u00e0 s\u1eed d\u1ee5ng ch\u00fang \u0111\u1ec1u g\u1eafn li\u1ec1n v\u1edbi laze. Nh\u1eafc \u0111\u1ebfn laze, ng\u01b0\u1eddi ta hay li\u00ean t\u01b0\u1edfng \u0111\u1ebfn “v\u0169 kh\u00ed […]<\/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-5810","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\/5810","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=5810"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5810\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5810"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5810"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}