chuy\u00ean gia<\/a> quang h\u1ecdc nghi\u00ean c\u1ee9u v\u1ea5n \u0111\u1ec1 n\u00e0y, sau c\u00f9ng t\u00ecm \u0111\u01b0\u1ee3c t\u1ec9 l\u1ec7 th\u00edch h\u1ee3p v\u1ec1 \u0111\u1ed9 r\u1ed9ng c\u1ee7a ba d\u1ea3i m\u00e0u: xanh, tr\u1eafng, \u0111\u1ecf. \u0110\u00f3 l\u00e0 30, 33, 37. D\u00f9ng t\u1ec9 l\u1ec7 nh\u01b0 v\u1eady c\u1eaft ra ba d\u1ea3i m\u00e0u th\u00ec nh\u00ecn v\u00e0o th\u1ea5y ch\u00fang r\u1ed9ng b\u1eb1ng nhau.<\/p>\n\n\n\nB\u1ea1n c\u1ea3m th\u1ea5y k\u00ec l\u1ea1 \u01b0? \u0110\u00f3 l\u00e0 \u00e1nh s\u00e1ng l\u00e0m tr\u00f2 \u1ea3o thu\u1eadt \u0111\u1ea5y. Nh\u00e0 khoa h\u1ecdc Anh, Newton, \u0111\u00e3 t\u1eebng l\u00e0m c\u00e1c th\u1ef1c nghi\u1ec7m t\u00e1n s\u1eafc c\u1ee7a \u00e1nh s\u00e1ng. \u00d4ng cho m\u1ed9t ch\u00f9m tia M\u1eb7t Tr\u1eddi \u0111i qua l\u0103ng k\u00ednh tam gi\u00e1c, k\u1ebft qu\u1ea3 l\u00e0 tr\u00ean ph\u00f4ng v\u1ea3i \u1edf m\u1ed9t ph\u00eda kh\u00e1c xu\u1ea5t hi\u1ec7n quang ph\u1ed5 c\u1ee7a b\u1ea3y lo\u1ea1i \u00e1nh s\u00e1ng m\u00e0u: \u0111\u1ecf, da cam, v\u00e0ng, l\u1ee5c, lam, ch\u00e0m, t\u00edm. V\u00ec nh\u1eefng \u00e1nh s\u00e1ng \u0111\u01a1n s\u1eafc n\u00e0y khi t\u1eeb m\u1ed9t lo\u1ea1i v\u1eadt ch\u1ea5t \u0111i v\u00e0o m\u1ed9t lo\u1ea1i v\u1eadt ch\u1ea5t kh\u00e1c th\u00ec ph\u1ea3i b\u1ecb g\u1eadp l\u1ec7ch \u0111i. V\u1edbi \u00e1nh s\u00e1ng m\u00e0u s\u1eafc kh\u00e1c nhau, m\u1ee9c \u0111\u1ed9 g\u1eadp l\u1ec7ch c\u0169ng kh\u00e1c nhau, \u00e1nh s\u00e1ng xanh d\u1ec5 b\u1ecb g\u1eadp l\u1ec7ch h\u01a1n \u00e1nh s\u00e1ng \u0111\u1ecf. Thu\u1ef7 tinh th\u1ec3 c\u1ee7a m\u1eaft ng\u01b0\u1eddi gi\u1ed1ng nh\u01b0 m\u1ed9t th\u1ea5u k\u00ednh l\u1ed3i, c\u0169ng c\u00f3 th\u1ec3 l\u00e0m cho tia s\u00e1ng sinh ra g\u1eadp l\u1ec7ch v\u00e0 h\u1ed9i t\u1ee5 \u1edf \u0111\u00e1y m\u1eaft. Khi \u00e1nh s\u00e1ng xanh \u0111i qua thu\u1ef7 tinh th\u1ec3 c\u1ee7a m\u1eaft ng\u01b0\u1eddi v\u00e0 h\u1ed9i t\u1ee5 l\u1ea1i, so v\u1edbi t\u1ee5 \u0111i\u1ec3m c\u1ee7a \u00e1nh s\u00e1ng \u0111\u1ecf g\u1ea7n h\u01a1n m\u1ed9t \u00edt. V\u00ec v\u1eady, khi v\u1eadt th\u1ec3 m\u00e0u xanh v\u00e0 v\u1eadt th\u1ec3 m\u00e0u \u0111\u1ecf c\u00f3 k\u00edch th\u01b0\u1edbc nh\u01b0 nhau, \u1edf c\u00e1ch xa con m\u1eaft nh\u01b0 nhau, m\u1eaft ch\u00fang ta nh\u00ecn v\u00e0o c\u00f3 v\u1ebb nh\u01b0 v\u1eadt th\u1ec3 m\u00e0u xanh l\u1edbn h\u01a1n m\u1ed9t ch\u00fat. B\u1ea7u tr\u1eddi m\u00e0u xanh l\u01a1 tr\u00f4ng c\u00f3 v\u1ebb \u0111\u1eb7c bi\u1ec7t cao; c\u00e1c ki\u1ebfn tr\u00fac nh\u01b0 h\u1ed9i tr\u01b0\u1eddng v.v. qu\u00e9t v\u00f4i m\u00e0u xanh l\u01a1 tr\u00ean tr\u1ea7n nh\u00e0 bao gi\u1edd tr\u00f4ng c\u0169ng c\u00f3 v\u1ebb cao r\u1ed9ng h\u01a1n, \u0111\u1ec1u l\u00e0 do duy\u00ean c\u1edb \u1ea5y.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: T\u00e1n s\u1eafc \u00e1nh s\u00e1ng; Quang ph\u1ed5.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
B\u1ea1n \u0111\u00e3 tr\u00f4ng th\u1ea5y qu\u1ed1c k\u00ec c\u1ee7a n\u01b0\u1edbc Ph\u00e1p ch\u01b0a? N\u00f3 do ba d\u1ea3i m\u00e0u: xanh, tr\u1eafng, \u0111\u1ecf h\u1ee3p th\u00e0nh. Tho\u1ea1t nh\u00ecn th\u00ec ba d\u1ea3i m\u00e0u \u1ea5y r\u1ed9ng b\u1eb1ng nhau, song n\u1ebfu b\u1ea1n d\u00f9ng th\u01b0\u1edbc \u0111o th\u1eed th\u00ec c\u00f3 th\u1ec3 nh\u1eadn th\u1ea5y, ch\u00fang kh\u00f4ng ph\u1ea3i r\u1ed9ng nh\u01b0 nhau \u0111\u00e2u. C\u00f3 ph\u1ea3i l\u00e0 ng\u01b0\u1eddi l\u00e0m c\u1edd […]<\/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-5792","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\/5792","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=5792"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5792\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5792"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5792"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}