{"id":21043,"date":"2025-07-08T02:05:53","date_gmt":"2025-07-07T19:05:53","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=21043"},"modified":"2025-07-08T07:35:04","modified_gmt":"2025-07-08T00:35:04","slug":"anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/","title":{"rendered":"\u00c1nh s\u00e1ng l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u ki\u1ebfn th\u1ee9c v\u1ec1 \u00e1nh s\u00e1ng t\u1eeb A-Z"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Anh_sang_la_gi\" >\u00c1nh s\u00e1ng l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Loai_anh_sang\" >Lo\u1ea1i \u00e1nh s\u00e1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Nhan_ra_anh_sang\" >Nh\u1eadn ra \u00e1nh s\u00e1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Xem_mot_doi_tuong\" >Xem m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Truyen_anh_sang\" >Truy\u1ec1n \u00e1nh s\u00e1ng<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Luat_truyen_thang_cua_anh_sang\" >Lu\u1eadt truy\u1ec1n th\u1eb3ng c\u1ee7a \u00e1nh s\u00e1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Ap_dung_luat_truyen_tai_thang\" >\u00c1p d\u1ee5ng lu\u1eadt truy\u1ec1n t\u1ea3i th\u1eb3ng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Luat_phan_anh_anh_sang\" >Lu\u1eadt ph\u1ea3n \u00e1nh \u00e1nh s\u00e1ng<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Thi_nghiem_luat_phan_xa_anh_sang\" >Th\u00ed nghi\u1ec7m lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Tuyen_bo_ve_Luat_Phan_xa_anh_sang\" >Tuy\u00ean b\u1ed1 v\u1ec1 Lu\u1eadt Ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Ap_dung_luat_phan_xa_anh_sang\" >\u00c1p d\u1ee5ng lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/anh-sang-la-gi-tim-hieu-kien-thuc-ve-anh-sang-tu-a-z\/#Bai_tap_anh_sang_chung\" >B\u00e0i t\u1eadp \u00e1nh s\u00e1ng chung<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">\u00c1nh s\u00e1ng \u0111\u00f3ng m\u1ed9t vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng trong cu\u1ed9c s\u1ed1ng c\u1ee7a con ng\u01b0\u1eddi, g\u00f3p ph\u1ea7n v\u00e0o cu\u1ed9c s\u1ed1ng v\u00e0 l\u00e0 m\u1ed9t ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng kh\u00f4ng th\u1ec3 thi\u1ebfu cho c\u00e1c sinh v\u1eadt tr\u00ean tr\u00e1i \u0111\u1ea5t. V\u1eady \u00e1nh s\u00e1ng l\u00e0 g\u00ec? \u00c1nh s\u00e1ng quan tr\u1ecdng nh\u01b0 th\u1ebf n\u00e0o? H\u00e3y t\u00ecm hi\u1ec3u v\u1edbi Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef trong b\u00e0i vi\u1ebft n\u00e0y b\u00e2y gi\u1edd!<\/p>\n<p>                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/image\/600x480.png\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Anh_sang_la_gi\"><\/span>\u00c1nh s\u00e1ng l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/anh-sang-1.jpeg\" alt=\"\u00c1nh s\u00e1ng \u0111\u00f3ng m\u1ed9t vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng trong cu\u1ed9c s\u1ed1ng. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<p dir=\"ltr\">\u00c1nh s\u00e1ng l\u00e0 t\u00ean \u0111\u1ec3 ch\u1ec9 ra b\u1ee9c x\u1ea1 \u0111i\u1ec7n t\u1eeb s\u1edf h\u1eefu c\u00e1c b\u01b0\u1edbc s\u00f3ng nh\u1ecf trong quang ph\u1ed5 t\u1eeb 380nm \u0111\u1ebfn 700nm, c\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a \u00e1nh s\u00e1ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1c ho\u1ea1t \u0111\u1ed9ng b\u1ee9c x\u1ea1 \u0111i\u1ec7n t\u1eeb. Trong v\u00f9ng \u0111i\u1ec7n t\u1eeb quang ph\u1ed5 n\u00e0y, \u0111\u00f4i m\u1eaft tr\u1ea7n c\u1ee7a ng\u01b0\u1eddi c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c nh\u00ecn th\u1ea5y ho\u00e0n to\u00e0n.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Loai_anh_sang\"><\/span>Lo\u1ea1i \u00e1nh s\u00e1ng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u00c1nh s\u00e1ng \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i ch\u00ednh d\u1ef1a tr\u00ean s\u1ef1 ph\u00e2n chia theo ngu\u1ed3n \u00e1nh s\u00e1ng v\u00e0 b\u01b0\u1edbc s\u00f3ng ph\u00e2n chia:<\/p>\n<p dir=\"ltr\">Ph\u00e2n chia d\u1ef1a tr\u00ean th\u1ebf h\u1ec7 \u00e1nh s\u00e1ng:<\/p>\n<p dir=\"ltr\">D\u1ef1a tr\u00ean ph\u00e2n lo\u1ea1i theo ngu\u1ed3n \u00e1nh s\u00e1ng, \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c lo\u1ea1i sau:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u00c1nh s\u00e1ng t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi m\u1eb7t tr\u1eddi: lo\u1ea1i \u00e1nh s\u00e1ng n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u1eb7t tr\u1eddi (c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u00ean kh\u00e1c l\u00e0 \u00e1nh s\u00e1ng tr\u1eafng).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u00c1nh s\u00e1ng t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi m\u1eb7t tr\u0103ng: \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u00e1nh s\u00e1ng th\u1ef1c s\u1ef1. Ki\u1ec3u \u00e1nh s\u00e1ng n\u00e0y ph\u00e1t sinh b\u1edfi m\u1eb7t tr\u1eddi l\u00ean m\u1eb7t tr\u0103ng v\u00e0 ph\u1ea3n chi\u1ebfu con m\u1eaft tr\u1ea7n tr\u1ee5i c\u1ee7a con ng\u01b0\u1eddi.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u00c1nh s\u00e1ng nh\u00e2n t\u1ea1o: \u00c1nh s\u00e1ng n\u00e0y \u0111\u01b0\u1ee3c con ng\u01b0\u1eddi t\u1ea1o ra \u0111\u1ec3 gi\u00fap chi\u1ebfu s\u00e1ng c\u00e1c ho\u1ea1t \u0111\u1ed9ng v\u00e0o ban \u0111\u00eam ho\u1eb7c trong b\u00f3ng t\u1ed1i (\u00e1nh s\u00e1ng \u0111i\u1ec7n) v\u00e0 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u00e8n chi\u1ebfu s\u00e1ng.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u00c1nh s\u00e1ng ph\u00e1t ra t\u1eeb \u0111\u1ed9ng v\u1eadt \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u00e1nh s\u00e1ng sinh h\u1ecdc (\u00e1nh s\u00e1ng c\u1ee7a \u0111om \u0111\u00f3m, &#8230;).<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">Ph\u00e2n chia d\u1ef1a tr\u00ean b\u01b0\u1edbc s\u00f3ng:<\/p>\n<p dir=\"ltr\">D\u1ef1a tr\u00ean s\u1ef1 ph\u00e2n chia b\u01b0\u1edbc s\u00f3ng, \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c lo\u1ea1i sau:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u00c1nh s\u00e1ng l\u1ea1nh: Nh\u1eefng \u0111\u00e8n n\u00e0y c\u00f3 b\u01b0\u1edbc s\u00f3ng t\u1eadp trung g\u1ea7n ph\u1ed5 t\u00edm.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u00c1nh s\u00e1ng n\u00f3ng: Lo\u1ea1i \u00e1nh s\u00e1ng c\u00f3 b\u01b0\u1edbc s\u00f3ng g\u1ea7n khu v\u1ef1c m\u00e0u \u0111\u1ecf.<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Nhan_ra_anh_sang\"><\/span>Nh\u1eadn ra \u00e1nh s\u00e1ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh \u00e1nh s\u00e1ng r\u1ea5t \u0111\u01a1n gi\u1ea3n, c\u00e1c tr\u01b0\u1eddng h\u1ee3p m\u00e0 m\u1eaft ch\u00fang ta c\u00f3 th\u1ec3 nh\u1eadn ra<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">V\u00e0o ban ng\u00e0y, m\u1edf m\u1eaft ra ngo\u00e0i tr\u1eddi.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">V\u00e0o ban \u0111\u00eam, \u0111\u1ee9ng trong m\u1ed9t c\u0103n ph\u00f2ng k\u00edn, m\u1edf m\u1eaft ra v\u00e0 b\u1eadt \u0111\u00e8n.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">M\u1eaft ch\u00fang ta c\u00f3 th\u1ec3 nh\u1eadn ra \u00e1nh s\u00e1ng khi c\u00f3 \u00e1nh s\u00e1ng truy\u1ec1n v\u00e0o m\u1eaft ch\u00fang ta.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Xem_mot_doi_tuong\"><\/span>Xem m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Th\u1ef1c hi\u1ec7n c\u00e1c th\u00ed nghi\u1ec7m:<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/anh-sang-2.jpeg\" alt=\"Th\u00ed nghi\u1ec7m \u0111\u00e3 xem x\u00e9t c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong hai m\u00f4i tr\u01b0\u1eddng \u00e1nh s\u00e1ng. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<p dir=\"ltr\">Trong th\u00ed nghi\u1ec7m tr\u00ean, khi nh\u00ecn v\u00e0o b\u00ean trong h\u1ed9p, n\u1ebfu c\u00f3 \u00e1nh s\u00e1ng, ch\u00fang ta c\u00f3 th\u1ec3 th\u1ea5y m\u1ed9t m\u1ea3nh gi\u1ea5y tr\u1eafng. Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu ch\u00fang ta t\u1eaft \u0111\u00e8n, ch\u00fang ta kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y m\u1ea3nh gi\u1ea5y tr\u1eafng \u0111\u00f3. Ch\u1ee9ng minh r\u1eb1ng, khi c\u00f3 \u00e1nh s\u00e1ng chi\u1ebfu v\u00e0o m\u1ea3nh gi\u1ea5y, \u00e1nh s\u00e1ng t\u1eeb m\u1ea3nh gi\u1ea5y tr\u1eafng s\u1ebd ph\u1ea3n chi\u1ebfu v\u00e0o m\u1eaft v\u00e0 ch\u00fang ta c\u00f3 th\u1ec3 th\u1ea5y.<\/p>\n<p dir=\"ltr\">K\u1ebft lu\u1eadn: Ch\u00fang ta c\u00f3 th\u1ec3 th\u1ea5y m\u1ecdi th\u1ee9 khi c\u00f3 \u00e1nh s\u00e1ng truy\u1ec1n \u0111\u1ebfn m\u1eaft ch\u00fang ta.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Truyen_anh_sang\"><\/span>Truy\u1ec1n \u00e1nh s\u00e1ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Luat_truyen_thang_cua_anh_sang\"><\/span>Lu\u1eadt truy\u1ec1n th\u1eb3ng c\u1ee7a \u00e1nh s\u00e1ng <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ecbnh lu\u1eadt truy\u1ec1n \u00e1nh s\u00e1ng th\u1eb3ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a nh\u01b0 sau: Trong m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 \u0111\u1ed3ng t\u00ednh luy\u1ebfn \u00e1i, \u00e1nh s\u00e1ng truy\u1ec1n theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ap_dung_luat_truyen_tai_thang\"><\/span>\u00c1p d\u1ee5ng lu\u1eadt truy\u1ec1n t\u1ea3i th\u1eb3ng <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u00f3ng t\u1ed1i v\u00e0 b\u00f3ng t\u1ed1i m\u1ed9t n\u1eeda t\u1ed1i<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\"><em>T\u1ed1i t\u0103m<\/em><\/p>\n<p dir=\"ltr\">Th\u1eed nghi\u1ec7m: \u0110\u1eb7t \u0111\u00e8n pin tr\u01b0\u1edbc m\u00e0n h\u00ecnh. Gi\u1eefa \u0111\u00e8n pin v\u00e0 m\u00e0n h\u00ecnh, \u0111\u1eb7t m\u1ed9t n\u1eafp nh\u1ecf (nh\u01b0 hi\u1ec3n th\u1ecb b\u00ean d\u01b0\u1edbi).<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/anh-sang-3.jpeg\" alt=\"Th\u1eed nghi\u1ec7m v\u1ec1 b\u00f3ng t\u1ed1i. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">V\u00f9ng t\u1ed1i: Tr\u00ean m\u00e0n h\u00ecnh, s\u1ebd c\u00f3 m\u1ed9t khu v\u1ef1c kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng v\u00ec c\u00e1c tia s\u00e1ng t\u1eeb \u0111\u00e8n pin ph\u00e1t ra theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u00f3 n\u1eafp, do \u0111\u00f3 n\u00f3 s\u1ebd kh\u00f4ng \u0111\u1ebfn \u0111\u01b0\u1ee3c m\u00e0n h\u00ecnh. Nh\u1eefng khu v\u1ef1c n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 khu v\u1ef1c t\u1ed1i.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">V\u00f9ng s\u00e1ng: V\u00ec n\u1eafp nh\u1ecf kh\u00f4ng ch\u1eb7n t\u1ea5t c\u1ea3 \u00e1nh s\u00e1ng t\u1eeb \u0111\u00e8n pin, v\u1eabn s\u1ebd c\u00f3 nh\u1eefng tia kh\u00f4ng b\u1ecb c\u1ea3n tr\u1edf. Do \u0111\u00f3, s\u1ebd c\u00f3 khu v\u1ef1c nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">K\u1ebft lu\u1eadn:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u1edfi v\u00ec \u00e1nh s\u00e1ng truy\u1ec1n theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng, g\u1eb7p ph\u1ea3i m\u1ed9t tr\u1edf ng\u1ea1i kh\u00f4ng th\u1ec3 truy\u1ec1n \u0111i, khu v\u1ef1c m\u00e0u \u0111en s\u1ebd ho\u00e0n to\u00e0n kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng t\u1eeb ngu\u1ed3n s\u00e1ng. Khu v\u1ef1c n\u00e0y kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng t\u1eeb \u00e1nh s\u00e1ng \u0111\u1ebfn m\u00e0n h\u00ecnh g\u1ecdi l\u00e0 b\u00f3ng t\u1ed1i.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><em>C\u00e1i b\u00f3ng l\u00e0 m\u1ed9t n\u1eeda -dark<\/em><\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/anh-sang-4.jpeg\" alt=\"Th\u1eed nghi\u1ec7m b\u00f3ng m\u1ed9t n\u1eeda b\u00f3ng t\u1ed1i. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<p dir=\"ltr\">Th\u00ed nghi\u1ec7m: Th\u1ef1c hi\u1ec7n th\u00ed nghi\u1ec7m nh\u01b0 trong th\u00ed nghi\u1ec7m t\u1ed1i, thay th\u1ebf \u0111\u00e8n pin b\u1eb1ng \u0111\u00e8n \u0111i\u1ec7n (nh\u01b0 hi\u1ec3n th\u1ecb \u1edf tr\u00ean).<\/p>\n<p dir=\"ltr\">Quan s\u00e1t h\u00ecnh \u1ea3nh tr\u00ean ch\u00fang ta th\u1ea5y, khu v\u1ef1c \u1edf gi\u1eefa m\u00e0n h\u00ecnh l\u00e0 khu v\u1ef1c t\u1ed1i, khu v\u1ef1c ngo\u00e0i c\u00f9ng l\u00e0 s\u00e1ng v\u00e0 khu v\u1ef1c gi\u1eefa hai khu v\u1ef1c l\u00e0 khu v\u1ef1c m\u1ed9t n\u1eeda.<\/p>\n<p dir=\"ltr\">K\u1ebft lu\u1eadn:<\/p>\n<p dir=\"ltr\">Tr\u00ean r\u00e0o c\u1ea3n \u0111\u1eb1ng sau ch\u01b0\u1edbng ng\u1ea1i v\u1eadt, c\u00f3 m\u1ed9t khu v\u1ef1c ch\u1ec9 nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng t\u1eeb m\u1ed9t ph\u1ea7n c\u1ee7a ngu\u1ed3n \u00e1nh s\u00e1ng s\u1eafp t\u1edbi \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u00f3ng t\u1ed1i.<\/p>\n<ol start=\"2\">\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hi\u1ec7n t\u01b0\u1ee3ng nh\u1eadt th\u1ef1c v\u00e0 nh\u1eadt th\u1ef1c m\u1eb7t tr\u0103ng<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\"><em>Hi\u1ec7n t\u01b0\u1ee3ng nh\u1eadt th\u1ef1c<\/em><\/p>\n<p dir=\"ltr\">Khi m\u1eb7t tr\u0103ng n\u1eb1m gi\u1eefa tr\u00e1i \u0111\u1ea5t v\u00e0 m\u1eb7t tr\u1eddi, m\u1ed9t ph\u1ea7n \u00e1nh s\u00e1ng t\u1eeb m\u1eb7t tr\u1eddi \u0111\u1ebfn tr\u00e1i \u0111\u1ea5t s\u1ebd b\u1ecb che khu\u1ea5t b\u1edfi m\u1eb7t tr\u0103ng. V\u00e0o th\u1eddi \u0111i\u1ec3m n\u00e0y, tr\u00ean tr\u00e1i \u0111\u1ea5t s\u1ebd xu\u1ea5t hi\u1ec7n t\u1ed1i v\u00e0 m\u1ed9t n\u1eeda -dark. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Eclipse.<\/p>\n<p dir=\"ltr\">N\u1ebfu b\u1ea1n \u0111\u1ee9ng \u1edf v\u1ecb tr\u00ed t\u1ed1i, ch\u00fang ta s\u1ebd kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y m\u1eb7t tr\u1eddi (nh\u1eadt th\u1ef1c to\u00e0n ph\u1ea7n). \u0110\u1ee9ng \u1edf v\u1ecb tr\u00ed b\u00f3ng t\u1ed1i, b\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y m\u1ed9t ph\u1ea7n c\u1ee7a m\u1eb7t tr\u1eddi (nh\u1eadt th\u1ef1c).<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/anh-sang-5.jpeg\" alt=\"Hi\u1ec7n t\u01b0\u1ee3ng nh\u1eadt th\u1ef1c. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<p dir=\"ltr\"><em>Hi\u1ec7n t\u01b0\u1ee3ng kh\u1ec9<\/em><\/p>\n<p dir=\"ltr\">Nguy\u1ec7t th\u1ef1c x\u1ea3y ra khi tr\u00e1i \u0111\u1ea5t n\u1eb1m gi\u1eefa m\u1eb7t tr\u0103ng v\u00e0 m\u1eb7t tr\u1eddi, tr\u00e1i \u0111\u1ea5t che khu\u1ea5t m\u1eb7t tr\u0103ng. V\u00e0o th\u1eddi \u0111i\u1ec3m n\u00e0y, m\u1eb7t tr\u0103ng \u0111\u00e3 kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng t\u1eeb m\u1eb7t tr\u1eddi n\u00ean ch\u00fang t\u00f4i kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y n\u00f3. <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khi m\u1eb7t tr\u0103ng b\u01b0\u1edbc v\u00e0o b\u00f3ng t\u1ed1i c\u1ee7a tr\u00e1i \u0111\u1ea5t (nh\u1eadt th\u1ef1c to\u00e0n ph\u1ea7n).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khi m\u1eb7t tr\u0103ng b\u01b0\u1edbc v\u00e0o b\u00f3ng n\u1eeda c\u1ee7a tr\u00e1i \u0111\u1ea5t, m\u1eb7t tr\u0103ng ch\u1ec9 l\u00e0m gi\u1ea3m \u0111\u1ed9 s\u00e1ng m\u1ed9t ch\u00fat (m\u1ed9t n\u1eeda -dark).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khi m\u1eb7t tr\u0103ng ch\u1ec9 c\u00f3 m\u1ed9t ph\u1ea7n b\u00f3ng t\u1ed1i c\u1ee7a tr\u00e1i \u0111\u1ea5t. M\u1eb7t tr\u0103ng ch\u1ec9 \u0111\u01b0\u1ee3c quan s\u00e1t m\u1ed9t ph\u1ea7n v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c quan s\u00e1t b\u1eb1ng m\u1eaft th\u01b0\u1eddng (nh\u1eadt th\u1ef1c m\u1ed9t ph\u1ea7n).<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/anh-sang-6.jpeg\" alt=\"Hi\u1ec7n t\u01b0\u1ee3ng nh\u1eadt th\u1ef1c. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Luat_phan_anh_anh_sang\"><\/span>Lu\u1eadt ph\u1ea3n \u00e1nh \u00e1nh s\u00e1ng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng \u00e1nh s\u00e1ng h\u00e0ng ng\u00e0y trong cu\u1ed9c s\u1ed1ng. M\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh v\u1ec1 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 th\u1eed nghi\u1ec7m chi\u1ebfu s\u00e1ng c\u1ee7a \u0111\u00e8n pin tr\u00ean m\u1eb7t ph\u1eb3ng tr\u00ean b\u00e0n, ch\u00fang ta s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c m\u1ed9t v\u1ec7t \u00e1nh s\u00e1ng tr\u00ean t\u01b0\u1eddng.<\/p>\n<p dir=\"ltr\">Do \u0111\u00f3, ch\u00fang ta c\u00f3 th\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng nh\u01b0 sau: khi \u00e1nh s\u00e1ng ch\u1ea1m v\u00e0o b\u1ec1 m\u1eb7t ho\u1eb7c ranh gi\u1edbi kh\u00e1c kh\u00f4ng h\u1ea5p th\u1ee5 n\u0103ng l\u01b0\u1ee3ng b\u1ee9c x\u1ea1 v\u00e0 l\u00e0m cho s\u00f3ng \u00e1nh s\u00e1ng b\u1eadt ra t\u1eeb b\u1ec1 m\u1eb7t \u0111\u00f3.<\/p>\n<p dir=\"ltr\">Xem th\u00eam: T\u00f3m t\u1eaft ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 g\u01b0\u01a1ng l\u1ed3i v\u1eadt l\u00fd 7<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Thi_nghiem_luat_phan_xa_anh_sang\"><\/span>Th\u00ed nghi\u1ec7m lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">S\u1eed d\u1ee5ng \u0111\u00e8n pin \u0111\u1ec3 hi\u1ec3n th\u1ecb 1 tia l\u00ean m\u1eb7t ph\u1eb3ng g\u01b0\u01a1ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t m\u1ea3nh gi\u1ea5y (nh\u01b0 hi\u1ec3n th\u1ecb b\u00ean d\u01b0\u1edbi), tia n\u00e0y \u0111i tr\u00ean b\u1ec1 m\u1eb7t gi\u1ea5y khi g\u1eb7p b\u1ec1 m\u1eb7t g\u01b0\u01a1ng c\u1ee7a \u00e1nh s\u00e1ng s\u1ebd \u0111\u01b0\u1ee3c \u0111\u00f3ng l\u1ea1i. \u0110\u00f3 l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh c\u1ee7a ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng.<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/anh-sang-7.jpeg\" alt=\"V\u00ed d\u1ee5 v\u1ec1 s\u1ef1 ph\u1ea3n chi\u1ebfu c\u1ee7a \u00e1nh s\u00e1ng. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tuyen_bo_ve_Luat_Phan_xa_anh_sang\"><\/span>Tuy\u00ean b\u1ed1 v\u1ec1 Lu\u1eadt Ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Khi \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c ph\u1ea3n x\u1ea1, tia ph\u1ea3n x\u1ea1 s\u1ebd \u1edf trong m\u1eb7t ph\u1eb3ng ch\u1ee9a c\u00e1c tia \u0111\u1ebfn v\u00e0 g\u01b0\u01a1ng c\u1ee7a g\u01b0\u01a1ng t\u1ea1i \u0111\u00edch. V\u00e0 g\u00f3c ph\u1ea3n x\u1ea1 c\u0169ng s\u1ebd b\u1eb1ng v\u1edbi g\u00f3c.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ap_dung_luat_phan_xa_anh_sang\"><\/span>\u00c1p d\u1ee5ng lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng v\u1ec1 lu\u1eadt ph\u1ea3n \u00e1nh \u00e1nh s\u00e1ng trong th\u1ef1c t\u1ebf nh\u01b0:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">V\u00e0o ban ng\u00e0y, \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi c\u00f3 th\u1ec3 chi\u1ebfu v\u00e0o g\u01b0\u01a1ng v\u00e0 ph\u1ea3n chi\u1ebfu \u00e1nh s\u00e1ng v\u00e0o m\u1eaft ch\u00fang ta.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Qua khe c\u1eeda, s\u1eed d\u1ee5ng m\u1ed9t th\u01b0\u1edbc k\u1ebb \u0111\u1ec3 b\u1eaft m\u1eb7t tr\u1eddi, ng\u01b0\u1eddi cai tr\u1ecb s\u1ebd ph\u1ea3n chi\u1ebfu m\u1eb7t tr\u1eddi. <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S\u1eed d\u1ee5ng \u0111\u00e8n pin \u0111\u1ec3 chi\u1ebfu v\u00e0o g\u01b0\u01a1ng, \u00e1nh s\u00e1ng s\u1ebd ph\u1ea3n chi\u1ebfu v\u00e0o m\u1eaft t\u00f4i<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00e1c lon chai\/ly d\u01b0\u1edbi \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi s\u1ebd ph\u1ea3n chi\u1ebfu trong m\u1eaft t\u00f4i, &#8230;.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/anh-sang-8.jpg\" alt=\"S\u1eed d\u1ee5ng \u0111\u00e8n pin v\u00e0o g\u01b0\u01a1ng s\u1ebd ph\u1ea3n chi\u1ebfu \u00e1nh s\u00e1ng cho m\u1eaft ch\u00fang ta. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_anh_sang_chung\"><\/span>B\u00e0i t\u1eadp \u00e1nh s\u00e1ng chung<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">C\u00e2u 1: T\u1ea1i sao ch\u00fang ta c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng?<\/p>\n<p dir=\"ltr\" role=\"presentation\">A. B\u1edfi v\u00ec \u0111\u00f4i m\u1eaft c\u1ee7a ch\u00fang ta ph\u00e1t ra tia s\u00e1ng tr\u00ean v\u1eadt th\u1ec3<\/p>\n<p dir=\"ltr\" role=\"presentation\">B. V\u00ec \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng<\/p>\n<p dir=\"ltr\" role=\"presentation\">C. B\u1edfi v\u00ec ch\u00fang t\u00f4i m\u1edf m\u1eaft v\u1ec1 ph\u00eda \u0111\u1ed1i t\u01b0\u1ee3ng<\/p>\n<p dir=\"ltr\" role=\"presentation\">D. B\u1edfi v\u00ec c\u00f3 \u00e1nh s\u00e1ng t\u1eeb v\u1eadt th\u1ec3 hi\u1ec7n tr\u00ean m\u1eaft ch\u00fang ta<\/p>\n<p dir=\"ltr\">C\u00e2u 2: \u0110i\u1ec1u n\u00e0o sau \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 ngu\u1ed3n s\u00e1ng?<\/p>\n<p dir=\"ltr\" role=\"presentation\">A. M\u1eb7t tr\u1eddi<\/p>\n<p dir=\"ltr\" role=\"presentation\">B. N\u1ebfn \u0111ang ch\u00e1y<\/p>\n<p dir=\"ltr\" role=\"presentation\">C. \u0110\u00e8n \u1ed1ng \u0111ang b\u1eadt<\/p>\n<p dir=\"ltr\" role=\"presentation\">D. V\u1ecf chai s\u00e1ng d\u01b0\u1edbi \u00e1nh m\u1eb7t tr\u1eddi<\/p>\n<p dir=\"ltr\">C\u00e2u 3: Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang v\u1ec1 &#8220;\u0110\u1ecbnh lu\u1eadt truy\u1ec1n \u00e1nh s\u00e1ng&#8221;. <\/p>\n<p dir=\"ltr\" role=\"presentation\">A. Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 kh\u00f4ng thay \u0111\u1ed5i, \u00e1nh s\u00e1ng \u0111i qua<\/p>\n<p dir=\"ltr\" role=\"presentation\">B. Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 thay \u0111\u1ed5i \u00e1nh s\u00e1ng truy\u1ec1n theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<\/p>\n<p dir=\"ltr\" role=\"presentation\">C. Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 \u0111\u1ed3ng t\u00ednh luy\u1ebfn \u00e1i \u0111i qua m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<\/p>\n<p dir=\"ltr\" role=\"presentation\">D. Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 \u00e1nh s\u00e1ng \u0111\u1ed3ng t\u00ednh truy\u1ec1n qua b\u00e0i h\u00e1t<\/p>\n<p dir=\"ltr\">C\u00e2u 4: \u00c1nh s\u00e1ng truy\u1ec1n theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng khi \u00e1nh s\u00e1ng: <\/p>\n<p dir=\"ltr\" role=\"presentation\">A. Truy\u1ec1n t\u1eeb m\u00f4i tr\u01b0\u1eddng minh b\u1ea1ch \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng minh b\u1ea1ch kh\u00e1c<\/p>\n<p dir=\"ltr\" role=\"presentation\">B. Truy\u1ec1n t\u1eeb m\u00f4i tr\u01b0\u1eddng \u0111\u1ed3ng t\u00ednh luy\u1ebfn \u00e1i n\u00e0y sang m\u00f4i tr\u01b0\u1eddng kh\u00e1c<\/p>\n<p dir=\"ltr\" role=\"presentation\">C. Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng minh b\u1ea1ch<\/p>\n<p dir=\"ltr\" role=\"presentation\">D. trong m\u00f4i tr\u01b0\u1eddng minh b\u1ea1ch v\u00e0 \u0111\u1ed3ng t\u00ednh luy\u1ebfn \u00e1i<\/p>\n<p dir=\"ltr\">C\u00e2u 5: \u0110\u01b0\u1eddng truy\u1ec1n \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng: <\/p>\n<p dir=\"ltr\" role=\"presentation\">A. \u0110\u00e8n ch\u00f9m<\/p>\n<p dir=\"ltr\" role=\"presentation\">B. H\u1ea1t s\u00e1ng<\/p>\n<p dir=\"ltr\" role=\"presentation\">C. C\u00e1c b\u00f3 s\u00e1ng<\/p>\n<p dir=\"ltr\" role=\"presentation\">D. Tia s\u00e1ng<\/p>\n<p dir=\"ltr\">C\u00e2u 6: Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 \u0111\u1ed3ng t\u00ednh luy\u1ebfn \u00e1i, \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i theo c\u00e1ch n\u00e0o? <\/p>\n<p dir=\"ltr\" role=\"presentation\">A. B\u1ea5t k\u1ef3 \u0111\u01b0\u1eddng cong<\/p>\n<p dir=\"ltr\" role=\"presentation\">B. \u0110\u01b0\u1eddng<\/p>\n<p dir=\"ltr\" role=\"presentation\">C. d\u00f2ng<\/p>\n<p dir=\"ltr\" role=\"presentation\">D. C\u1ea3 A, B, C \u0111\u1ec1u \u0111\u00fang.<\/p>\n<p dir=\"ltr\">C\u00e2u 7: N\u1ed9i dung n\u00e0o sau \u0111\u00e2y kh\u00f4ng n\u1eb1m trong lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng?<\/p>\n<p dir=\"ltr\" role=\"presentation\">A. Tia ph\u1ea3n chi\u1ebfu theo t\u1ef7 l\u1ec7 m\u1eafc<\/p>\n<p dir=\"ltr\" role=\"presentation\">B. g\u00f3c ph\u1ea3n x\u1ea1 theo t\u1ef7 l\u1ec7<\/p>\n<p dir=\"ltr\" role=\"presentation\">C. Tia ph\u1ea3n x\u1ea1 n\u1eb1m trong m\u1eb7t ph\u1eb3ng ch\u1ee9a c\u00e1c tia \u0111\u1ebfn v\u00e0 tuy\u1ebfn \u0111\u01b0\u1eddng c\u1ee7a m\u1eb7t ph\u1eb3ng g\u01b0\u01a1ng<\/p>\n<p dir=\"ltr\" role=\"presentation\">D. G\u00f3c \u0111\u01b0\u1ee3c kh\u1edbp v\u1edbi s\u1ef1 c\u1ed1 v\u00e0 Ph\u00e1p l\u00e0 g\u00f3c c\u1ee7a tia ph\u1ea3n x\u1ea1 v\u00e0 tuy\u1ebfn \u0111\u01b0\u1eddng ph\u00e1p l\u00fd.<\/p>\n<p dir=\"ltr\">C\u00e2u 8: D\u1ef1 \u00e1n m\u1ed9t tia s\u00e1ng SI tr\u00ean m\u1eb7t ph\u1eb3ng g\u01b0\u01a1ng, tia ph\u1ea3n x\u1ea1 IR c\u1ee7a Si \u0111ang \u1edf tr\u00ean m\u00e1y bay?<\/p>\n<p dir=\"ltr\" role=\"presentation\">A. M\u1eb7t ph\u1eb3ng g\u01b0\u01a1ng<\/p>\n<p dir=\"ltr\" role=\"presentation\">B. M\u1eb7t ph\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi t\u1ef7 l\u1ec7 m\u1eafc<\/p>\n<p dir=\"ltr\" role=\"presentation\">C. M\u1eb7t ph\u1eb3ng \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi tia \u0111\u1ebfn v\u00e0 b\u1ec1 m\u1eb7t g\u01b0\u01a1ng<\/p>\n<p dir=\"ltr\" role=\"presentation\">D. M\u00e1y bay \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi tia \u0111\u1ebfn v\u00e0 tuy\u1ebfn \u0111\u01b0\u1eddng h\u1ee3p ph\u00e1p c\u1ee7a g\u01b0\u01a1ng \u1edf \u0111\u00edch.<\/p>\n<p dir=\"ltr\">Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t b\u1ea3n t\u00f3m t\u1eaft v\u1ec1 l\u00fd thuy\u1ebft v\u00e0 \u1ee9ng d\u1ee5ng \u00e1nh s\u00e1ng trong cu\u1ed9c s\u1ed1ng. Hy v\u1ecdng, nh\u1eefng g\u00ec b\u00e0i b\u00e1o \u00e1nh s\u00e1ng s\u1ebd mang l\u1ea1i ki\u1ebfn \u200b\u200bth\u1ee9c t\u1ed5ng h\u1ee3p \u0111\u1ec3 gi\u00fap h\u1ecd hi\u1ec3u v\u00e0 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng nhi\u1ec1u h\u01a1n cu\u1ed9c s\u1ed1ng b\u00ean ngo\u00e0i.<\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c1nh s\u00e1ng \u0111\u00f3ng m\u1ed9t vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng trong cu\u1ed9c s\u1ed1ng c\u1ee7a con ng\u01b0\u1eddi, g\u00f3p ph\u1ea7n v\u00e0o cu\u1ed9c s\u1ed1ng v\u00e0 l\u00e0 m\u1ed9t ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng kh\u00f4ng th\u1ec3 thi\u1ebfu cho c\u00e1c sinh v\u1eadt tr\u00ean tr\u00e1i \u0111\u1ea5t. V\u1eady \u00e1nh s\u00e1ng l\u00e0 g\u00ec? \u00c1nh s\u00e1ng quan tr\u1ecdng nh\u01b0 th\u1ebf n\u00e0o? H\u00e3y t\u00ecm hi\u1ec3u v\u1edbi Shining Home&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-21043","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/21043","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=21043"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/21043\/revisions"}],"predecessor-version":[{"id":24992,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/21043\/revisions\/24992"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=21043"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=21043"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=21043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}