{"id":20974,"date":"2025-07-08T00:50:52","date_gmt":"2025-07-07T17:50:52","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=20974"},"modified":"2025-07-08T00:50:52","modified_gmt":"2025-07-07T17:50:52","slug":"chum-sang-la-gi-co-may-loai-chum-sang","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/chum-sang-la-gi-co-may-loai-chum-sang\/","title":{"rendered":"Ch\u00f9m s\u00e1ng l\u00e0 g\u00ec? C\u00f3 m\u1ea5y lo\u1ea1i ch\u00f9m s\u00e1ng?"},"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\/chum-sang-la-gi-co-may-loai-chum-sang\/#Duong_anh_sang_cua_anh_sang\" >\u0110\u01b0\u1eddng \u00e1nh s\u00e1ng c\u1ee7a \u00e1nh s\u00e1ng<\/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\/chum-sang-la-gi-co-may-loai-chum-sang\/#Chum_tia_la_gi\" >Ch\u00f9m tia l\u00e0 g\u00ec?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/chum-sang-la-gi-co-may-loai-chum-sang\/#Tia_sang_la_gi\" >Tia s\u00e1ng l\u00e0 g\u00ec<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/chum-sang-la-gi-co-may-loai-chum-sang\/#Chum_tia_la_gi-2\" >Ch\u00f9m tia l\u00e0 g\u00ec<\/a><\/li><\/ul><\/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\/chum-sang-la-gi-co-may-loai-chum-sang\/#Co_nhung_loai_chum_sang_nao\" >C\u00f3 nh\u1eefng lo\u1ea1i ch\u00f9m s\u00e1ng n\u00e0o?<\/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\/chum-sang-la-gi-co-may-loai-chum-sang\/#Tia_sang_song_song\" >Tia s\u00e1ng song song<\/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\/chum-sang-la-gi-co-may-loai-chum-sang\/#Tam_anh_sang_hoi_tu\" >T\u1ea7m \u00e1nh s\u00e1ng h\u1ed9i t\u1ee5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/chum-sang-la-gi-co-may-loai-chum-sang\/#Dam_phan_ky\" >D\u1ea7m ph\u00e2n k\u1ef3<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/chum-sang-la-gi-co-may-loai-chum-sang\/#Cach_ve_dam_anh_sang\" >C\u00e1ch v\u1ebd d\u1ea7m \u00e1nh s\u00e1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/chum-sang-la-gi-co-may-loai-chum-sang\/#Ap_dung_dam_anh_sang\" >\u00c1p d\u1ee5ng d\u1ea7m \u00e1nh s\u00e1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/chum-sang-la-gi-co-may-loai-chum-sang\/#Tra_loi_mot_so_cau_hoi_ve_chum_tia\" >Tr\u1ea3 l\u1eddi m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi v\u1ec1 ch\u00f9m tia<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">Truy\u1ec1n \u00e1nh s\u00e1ng l\u00e0 m\u1ed9t trong nh\u1eefng ki\u1ebfn \u200b\u200bth\u1ee9c th\u00fa v\u1ecb v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c d\u1ea1y trong Ch\u01b0\u01a1ng tr\u00ecnh V\u1eadt l\u00fd l\u1edbp 7. \u0110\u00e2y l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c thu\u1ed9c v\u1ec1 Ch\u01b0\u01a1ng I &#8211; Quang h\u1ecdc, ki\u1ebfn \u200b\u200bth\u1ee9c trong ch\u01b0\u01a1ng n\u00e0y th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n trong c\u00e1c c\u00e2u h\u1ecfi thi v\u00e0 l\u00e0 m\u1ed9t ch\u01b0\u01a1ng kh\u00e1 kh\u00f3 kh\u0103n trong ch\u01b0\u01a1ng tr\u00ecnh V\u1eadt l\u00fd tr\u01b0\u1eddng trung h\u1ecdc c\u01a1 s\u1edf. N\u1ebfu b\u1ea1n mu\u1ed1n t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 truy\u1ec1n \u00e1nh s\u00e1ng, d\u1ea7m, vui l\u00f2ng theo d\u00f5i b\u00e0i vi\u1ebft c\u1ee7a Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef ngay l\u1eadp t\u1ee9c \u0111\u1ec3 bi\u1ebft th\u00eam chi ti\u1ebft. Hy v\u1ecdng chia s\u1ebb c\u1ee7a Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef s\u1ebd khi\u1ebfn b\u1ea1n h\u00e0i l\u00f2ng. <\/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=\"Duong_anh_sang_cua_anh_sang\"><\/span>\u0110\u01b0\u1eddng \u00e1nh s\u00e1ng c\u1ee7a \u00e1nh s\u00e1ng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Tr\u01b0\u1edbc khi b\u01b0\u1edbc v\u00e0o b\u00e0i h\u1ecdc, b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 th\u00ed nghi\u1ec7m nh\u1ecf d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 c\u00f3 th\u1ec3 hi\u1ec3u ki\u1ebfn \u200b\u200bth\u1ee9c c\u0169ng nh\u01b0 t\u01b0\u1edfng t\u01b0\u1ee3ng b\u00e0i h\u1ecdc ng\u00e0y h\u00f4m nay.<\/p>\n<p dir=\"ltr\">Th\u1eed nghi\u1ec7m 1: <\/p>\n<p dir=\"ltr\">S\u1eafp x\u1ebfp th\u1eed nghi\u1ec7m nh\u01b0 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb <\/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\/chum-sang-2.jpg\" alt=\"H\u00ecnh minh h\u1ecda cho Th\u1eed nghi\u1ec7m 1. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"500\"><\/p>\n<p dir=\"ltr\">S\u1eed d\u1ee5ng hai \u1ed1ng nh\u1ef1a r\u1ed7ng, \u1ed1ng nh\u1ef1a cong v\u00e0 \u1ed1ng th\u1eb3ng \u0111\u1ec3 quan s\u00e1t b\u00f3ng \u0111\u00e8n khi \u0111\u00e8n pin ph\u00e1t s\u00e1ng.<\/p>\n<p dir=\"ltr\">Quan s\u00e1t th\u00ed nghi\u1ec7m, ch\u00fang ta th\u1ea5y: \u00e1nh s\u00e1ng truy\u1ec1n \u0111\u1ebfn m\u1eaft trong \u1ed1ng th\u1eb3ng (m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng).<\/p>\n<p dir=\"ltr\">Th\u1eed nghi\u1ec7m 2: <\/p>\n<p dir=\"ltr\">\u0110\u1eb7t ba n\u1eafp \u0111\u01b0\u1ee3c \u0111\u1ee5c l\u1ed7 nh\u01b0 th\u1ec3 hi\u1ec7n theo c\u00e1ch m\u00e0 m\u1eaft nh\u00ecn th\u1ea5y b\u00f3ng \u0111\u00e8n \u0111\u00e8n pin v\u00e0o bu\u1ed5i s\u00e1ng c\u1ee7a c\u1ea3 ba l\u1ed7 A, B, C.<\/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\/chum-sang-3.png\" alt=\"Minh h\u1ecda cho Th\u1eed nghi\u1ec7m 2. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"500\"><\/p>\n<p dir=\"ltr\">\u0110\u1eb7t \u0111\u00f4i m\u1eaft sau 3 t\u1ea5m \u0111\u1ea5m \u0111\u1ec3 c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y \u00e1nh s\u00e1ng t\u1eeb \u0111\u00e8n pin. N\u1ebfu ba l\u1ed7 kh\u00f4ng \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh, m\u1eaft kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y \u00e1nh s\u00e1ng t\u1eeb \u00e1nh s\u00e1ng.<\/p>\n<p dir=\"ltr\">Ch\u00fang t\u00f4i lu\u1ed3n m\u1ed9t chu\u1ed7i qua 3 l\u1ed7 c\u1ee7a 3 bao g\u1ed3m A, B, C:<\/p>\n<p dir=\"ltr\">N\u1ebfu 3 l\u1ed7 A, B, C v\u00e0 b\u00f3ng \u0111\u00e8n n\u1eb1m tr\u00ean \u0111\u01b0\u1eddng th\u1eb3ng ch\u1ee9a s\u1ee3i d\u00e2y \u0111\u00f3, ch\u00fang \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh.<\/p>\n<p dir=\"ltr\">N\u1ebfu 3 l\u1ed7 A, B, C v\u00e0 b\u00f3ng \u0111\u00e8n kh\u00f4ng n\u1eb1m tr\u00ean c\u00f9ng m\u1ed9t d\u00f2ng ch\u1ee9a s\u1ee3i d\u00e2y \u0111\u00f3, ch\u00fang kh\u00f4ng \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh.<\/p>\n<p dir=\"ltr\">Nh\u1eadn x\u00e9t: C\u00e1c \u1ed1ng th\u1eb3ng nh\u00ecn th\u1ea5y b\u00f3ng \u0111\u00e8n truy\u1ec1n tr\u1ef1c ti\u1ebfp \u0111\u1ebfn m\u1eaft.<\/p>\n<p dir=\"ltr\">K\u1ebft lu\u1eadn: \u0110\u01b0\u1eddng truy\u1ec1n \u00e1nh s\u00e1ng trong kh\u00f4ng kh\u00ed l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng.<\/p>\n<p dir=\"ltr\">K\u1ebft lu\u1eadn tr\u00ean c\u0169ng \u0111\u00fang v\u1edbi c\u00e1c m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 \u0111\u1ed3ng t\u00ednh kh\u00e1c nh\u01b0 th\u1ee7y tinh, n\u01b0\u1edbc, &#8230; do \u0111\u00f3, ch\u00fang ta c\u00f3 th\u1ec3 \u0111\u01b0a ra tuy\u00ean b\u1ed1 v\u1ec1 truy\u1ec1n t\u1ea3i \u00e1nh s\u00e1ng nh\u01b0 sau: <\/p>\n<p dir=\"ltr\"><em>\u0110\u1ecbnh lu\u1eadt truy\u1ec1n \u00e1nh s\u00e1ng th\u1eb3ng: Trong m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 \u0111\u1ed3ng t\u00ednh luy\u1ebfn \u00e1i, \u00e1nh s\u00e1ng \u0111i qua m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng.<\/em><\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5, nh\u1eadt th\u1ef1c to\u00e0n ph\u1ea7n (ho\u1eb7c m\u1ed9t ph\u1ea7n) \u0111\u01b0\u1ee3c quan s\u00e1t th\u1ea5y trong b\u00f3ng t\u1ed1i c\u1ee7a m\u1eb7t tr\u0103ng tr\u00ean tr\u00e1i \u0111\u1ea5t. Nh\u1eadt th\u1ef1c x\u1ea3y ra khi m\u1eb7t tr\u1eddi, m\u1eb7t tr\u0103ng v\u00e0 tr\u00e1i \u0111\u1ea5t \u1edf trong m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng ho\u1eb7c g\u1ea7n. Hi\u1ec7n t\u01b0\u1ee3ng nh\u1eadt th\u1ef1c l\u00e0 t\u1ecfa s\u00e1ng b\u1edfi m\u1eb7t tr\u0103ng. <\/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\/chum-sang-4.jpg\" alt=\"H\u00ecnh \u1ea3nh c\u1ee7a nh\u1eadt th\u1ef1c x\u1ea3y ra \u1edf th\u1ee7 \u0111\u00f4 H\u00e0 N\u1ed9i. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Chum_tia_la_gi\"><\/span>Ch\u00f9m tia l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tia_sang_la_gi\"><\/span>Tia s\u00e1ng l\u00e0 g\u00ec <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Tia \u0455\u00e1ng l\u00e0 \u0111\u01b0\u1eddng trua\u0443\u1ec1n \u1d04\u1ee7a \u00e1nhe<\/p>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chum-sang-5.png\" alt=\"H\u00ecnh \u1ea3nh th\u00f4ng th\u01b0\u1eddng c\u1ee7a c\u00e1c tia s\u00e1ng. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"500\"><\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5: tia s\u00e1ng laser, tia s\u00e1ng qua c\u00e2y v\u00e0o s\u00e1ng s\u1edbm, &#8230;<\/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\/chum-sang-6.jpg\" alt=\"H\u00ecnh minh h\u1ecda cho tia s\u00e1ng laser. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Chum_tia_la_gi-2\"><\/span>Ch\u00f9m tia l\u00e0 g\u00ec <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Tr\u00ean th\u1ef1c t\u1ebf, ch\u00fang ta kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y m\u1ed9t tia s\u00e1ng nh\u01b0ng ch\u1ec9 nh\u00ecn th\u1ea5y ch\u00f9m \u00e1nh s\u00e1ng bao g\u1ed3m r\u1ea5t nhi\u1ec1u tia s\u00e1ng.<\/p>\n<p dir=\"ltr\"><em>V\u00ec v\u1eady, ch\u00fang t\u00f4i x\u00e1c \u0111\u1ecbnh nh\u01b0 sau: ch\u00f9m tia bao g\u1ed3m r\u1ea5t nhi\u1ec1u tia s\u00e1ng <\/em><\/p>\n<p dir=\"ltr\">M\u1ed9t ch\u00f9m tia h\u1eb9p bao g\u1ed3m nhi\u1ec1u tia s\u00e1ng song song c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t tia s\u00e1ng.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Co_nhung_loai_chum_sang_nao\"><\/span>C\u00f3 nh\u1eefng lo\u1ea1i ch\u00f9m s\u00e1ng n\u00e0o?<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\/chum-sang-la-gi-23.jpg\" alt=\"Ba lo\u1ea1i d\u1ea7m \u00e1nh s\u00e1ng. (\u1ea2nh: Shutterstock.com)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">C\u00f3 3 d\u1ea7m \u00e1nh s\u00e1ng ph\u1ed5 bi\u1ebfn: d\u1ea7m song song, s\u1ef1 h\u1ed9i t\u1ee5 v\u00e0 ph\u00e2n k\u1ef3.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tia_sang_song_song\"><\/span>Tia s\u00e1ng song song <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">C\u00e1c d\u1ea7m \u00e1nh s\u00e1ng song song l\u00e0 nh\u1eefng ch\u00f9m s\u00e1ng bao g\u1ed3m c\u00e1c lo\u1ea1i kh\u00f4ng c\u00f3 tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a ch\u00fang.<\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5: \u0110\u00e8n pin (c\u1ea5u tr\u00fac c\u1ee7a \u0111\u00e8n pin c\u00f3 h\u00ecnh d\u1ea1ng gi\u1ed1ng nh\u01b0 m\u1ed9t c\u00e2y c\u1ea7u l\u1ed3i nh\u01b0ng v\u00ec trong \u0111\u00e8n pin c\u00f3 \u0111\u00e8n pha, \u0111\u00e8n \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i t\u1eeb ch\u00f9m tia \u0111a d\u1ea1ng th\u00e0nh ch\u00f9m s\u00e1ng song song.)<\/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\/chum-sang-8.jpg\" alt=\"H\u00ecnh \u1ea3nh c\u1ee7a \u0111\u00e8n pin khi b\u1eadt t\u1ea1o ra m\u1ed9t ch\u00f9m \u00e1nh s\u00e1ng song song. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tam_anh_sang_hoi_tu\"><\/span>T\u1ea7m \u00e1nh s\u00e1ng h\u1ed9i t\u1ee5 <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Tia h\u1ed9i t\u1ee5 l\u00e0 m\u1ed9t ch\u00f9m \u00e1nh s\u00e1ng giao nhau tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a ch\u00fang. <\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5, k\u00ednh l\u00fap (m\u1ed7i ch\u00f9m \u00e1nh s\u00e1ng \u0111i qua k\u00ednh l\u00fap l\u00e0 m\u1ed9t ch\u00f9m h\u1ed9i t\u1ee5, v\u00ec v\u1eady khi b\u1ea1n \u0111\u1ec3 k\u00ednh l\u00fap d\u01b0\u1edbi \u00e1nh m\u1eb7t tr\u1eddi, s\u1ebd c\u00f3 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng l\u1eeda).<\/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\/chum-sang-10.jpg\" alt=\"H\u00ecnh \u1ea3nh k\u00ednh l\u00fap t\u1ea1o ra l\u1eeda nh\u1edd \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dam_phan_ky\"><\/span>D\u1ea7m ph\u00e2n k\u1ef3 <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Tia ph\u00e2n k\u1ef3 l\u00e0 m\u1ed9t ch\u00f9m s\u00e1ng bao g\u1ed3m c\u00e1c tia s\u00e1ng b\u00f9ng ph\u00e1t m\u1edf r\u1ed9ng tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a ch\u00fang. <\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5: M\u1eb7t tr\u1eddi <\/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\/chum-sang-13.jpg\" alt=\"H\u00ecnh \u1ea3nh c\u1ee7a c\u00e1c d\u1ea7m ph\u00e2n k\u1ef3 \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi m\u1eb7t tr\u1eddi. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_ve_dam_anh_sang\"><\/span>C\u00e1ch v\u1ebd d\u1ea7m \u00e1nh s\u00e1ng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Tia h\u1ed9i t\u1ee5: V\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng \u1edf 1 \u0111i\u1ec3m v\u00e0 sau \u0111\u00f3 v\u1ebd m\u0169i t\u00ean bi\u1ec3u th\u1ecb ngu\u1ed3n 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\/chum-sang-9.png\" alt=\"\" width=\"500\"><\/p>\n<p dir=\"ltr\">D\u1ea7m ph\u00e2n chia: V\u1ebd hai d\u00f2ng b\u00f9ng l\u00ean \u1edf cu\u1ed1i v\u00e0 sau \u0111\u00f3 v\u1ebd m\u0169i t\u00ean cho bi\u1ebft ngu\u1ed3n 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\/chum-sang-12.png\" alt=\"\" width=\"500\"><\/p>\n<p dir=\"ltr\">Tia \u00e1nh s\u00e1ng song song: V\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 v\u1ebd m\u0169i t\u00ean bi\u1ec3u th\u1ecb ngu\u1ed3n 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\/chum-sang-7.png\" alt=\"\" width=\"500\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ap_dung_dam_anh_sang\"><\/span>\u00c1p d\u1ee5ng d\u1ea7m \u00e1nh s\u00e1ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">C\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a d\u1ea7m lu\u00f4n c\u00f3 m\u1eb7t trong cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta th\u00f4ng qua c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng kh\u00e1c nhau. C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a ch\u00f9m s\u00e1ng \u0111\u01a1n gi\u1ea3n trong cu\u1ed9c s\u1ed1ng ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u00c1p d\u1ee5ng d\u1ea7m song song: \u0110\u00e8n pin, b\u00f3ng \u0111\u00e8n, ph\u01b0\u01a1ng ti\u1ec7n, m\u00e1y chi\u1ebfu ph\u1eabu thu\u1eadt trong b\u1ec7nh vi\u1ec7n, v.v.<\/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\/chum-sang-14.png\" alt=\"H\u00ecnh \u1ea3nh minh h\u1ecda \u00e1nh s\u00e1ng trong ph\u00f2ng \u0111i\u1ec1u h\u00e0nh. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u00c1p d\u1ee5ng d\u1ea7m ph\u00e2n k\u1ef3: \u00c1nh s\u00e1ng c\u1ee7a thanh s\u1eaft \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng m\u1eb7t tr\u1eddi, m\u1eb7t tr\u1eddi, \u0111\u00e8n h\u1ecdc t\u1eadp, ng\u1ecdn l\u1eeda, &#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\/chum-sang-la-gi-24.jpg\" alt=\"H\u00ecnh \u1ea3nh minh h\u1ecda \u00e1nh s\u00e1ng h\u1ecdc t\u1eadp v\u1edbi d\u1ea7m ph\u00e2n k\u1ef3. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u1ee8ng d\u1ee5ng c\u1ee7a ch\u00f9m tia h\u1ed9i t\u1ee5: ch\u00f9m tia \u0111i song song qua g\u01b0\u01a1ng l\u00f5m, ch\u00f9m ph\u1ea3n x\u1ea1 l\u00e0 m\u1ed9t ch\u00f9m h\u1ed9i t\u1ee5 nh\u01b0: k\u00ednh hi\u1ec3n vi \u0111i\u1ec7n t\u1eed, laser, k\u00ednh l\u00fap, &#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\/chum-sang-16.jpg\" alt=\"H\u00ecnh \u1ea3nh s\u1eed d\u1ee5ng \u1ed1ng k\u00ednh h\u1ed9i t\u1ee5 \u0111\u1ec3 \u0111\u1ed1t l\u00e1 kh\u00f4. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<p dir=\"ltr\">Xem th\u00eam: \u00c1nh s\u00e1ng l\u00e0 g\u00ec? H\u1ecdc ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 \u00e1nh s\u00e1ng t\u1eeb AZ<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tra_loi_mot_so_cau_hoi_ve_chum_tia\"><\/span>Tr\u1ea3 l\u1eddi m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi v\u1ec1 ch\u00f9m tia <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">B\u1ea1n c\u00f3 t\u1ef1 tin r\u1eb1ng b\u1ea1n \u0111\u00e3 th\u00e0nh th\u1ea1o t\u1ea5t c\u1ea3 c\u00e1c ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 b\u00e0i h\u1ecdc n\u00e0y? H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi kh\u1ec9 v\u1edbi c\u00e1c b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn vi\u1ec7c truy\u1ec1n \u00e1nh s\u00e1ng.<\/p>\n<p dir=\"ltr\">C\u00e2u 1: Ch\u1ecdn \u0111\u00fang c\u00e2u<\/p>\n<p dir=\"ltr\">A. D\u1ea7m song song bao g\u1ed3m c\u00e1c giao \u0111i\u1ec3m tr\u00ean truy\u1ec1n c\u1ee7a ch\u00fang<\/p>\n<p dir=\"ltr\">B. C\u00e0ng \u0111i xa, ch\u00f9m s\u00e1ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ch\u00f9m ph\u00e2n k\u1ef3<\/p>\n<p dir=\"ltr\">C. Ch\u00f9m tia s\u00e1ng \u0111\u1ebfn t\u1eeb b\u00f3ng \u0111\u00e8n tr\u00f2n h\u1ed9i t\u1ee5<\/p>\n<p dir=\"ltr\">D. ch\u00f9m tia xu\u1ea5t ph\u00e1t t\u1eeb b\u00f3ng \u0111\u00e8n d\u00e0i l\u00e0 ch\u00f9m tia song song<\/p>\n<p dir=\"ltr\">C\u00e2u 2: \u0110\u1ed5 \u0111\u1ea7y t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng<\/p>\n<p dir=\"ltr\">M\u1ed9t. D\u1ea7m song song bao g\u1ed3m c\u00e1c tia s\u00e1ng &#8230; (1) &#8230; tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a ch\u00fang.<\/p>\n<p dir=\"ltr\">b. Tia h\u1ed9i t\u1ee5 bao g\u1ed3m c\u00e1c tia s\u00e1ng &#8230; (2) &#8230; tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a ch\u00fang.<\/p>\n<p dir=\"ltr\">c. D\u1ea7m ph\u00e2n k\u1ef3 bao g\u1ed3m c\u00e1c tia s\u00e1ng &#8230; (3) &#8230; tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a ch\u00fang.<\/p>\n<p dir=\"ltr\">Th\u1ee9 t\u1ef1 1, 2, 3 l\u00e0:<\/p>\n<p dir=\"ltr\">A. Giao nhau, kh\u00f4ng c\u00f3 giao \u0111i\u1ec3m, b\u00f9ng ph\u00e1t r\u1ed9ng<\/p>\n<p dir=\"ltr\">B. Giao nhau, b\u00f9ng l\u00ean r\u1ed9ng, kh\u00f4ng giao nhau <\/p>\n<p dir=\"ltr\">C. Kh\u00f4ng c\u00f3 giao \u0111i\u1ec3m, giao l\u1ed9, b\u00f9ng ph\u00e1t<\/p>\n<p dir=\"ltr\">C\u00e2u 3: Ch\u1ecdn c\u00e2u n\u00f3i ch\u00ednh x\u00e1c v\u1ec1 &#8220;Truy\u1ec1n thuy\u1ebft v\u1ec1 \u00e1nh s\u00e1ng&#8221;<\/p>\n<p dir=\"ltr\">A. 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\">B. 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\">C. 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\">D. Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng minh b\u1ea1ch v\u00e0 thay \u0111\u1ed5i \u00e1nh s\u00e1ng qua \u0111i trong b\u00e0i h\u00e1t<\/p>\n<p dir=\"ltr\">C\u00e2u 4: Ch\u1ecdn c\u00e2u sai<\/p>\n<p dir=\"ltr\">A. Tia s\u00e1ng l\u00e0 \u0111\u01b0\u1eddng truy\u1ec1n \u00e1nh s\u00e1ng. \u0110\u01b0\u1eddng d\u1eabn \u00e1nh s\u00e1ng gi\u1eefa hai \u0111i\u1ec3m l\u00e0 \u0111\u01b0\u1eddng ng\u1eafn nh\u1ea5t c\u1ee7a hai \u0111i\u1ec3m \u0111\u00f3<\/p>\n<p dir=\"ltr\">B. D\u1ea7m \u0111a d\u1ea1ng l\u00e0 nh\u1eefng ch\u00f9m tia s\u00e1ng giao nhau tr\u00ean truy\u1ec1n c\u1ee7a ch\u00fang<\/p>\n<p dir=\"ltr\">C. Ngu\u1ed3n \u00e1nh s\u00e1ng l\u00e0 \u00e1nh s\u00e1ng ph\u00e1t ra t\u1ef1 ph\u00e1t<\/p>\n<p dir=\"ltr\">D. C\u00e1c v\u1eadt th\u1ec3 \u00e1nh s\u00e1ng bao g\u1ed3m c\u00e1c ngu\u1ed3n \u00e1nh s\u00e1ng v\u00e0 c\u00e1c v\u1eadt th\u1ec3 \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng<\/p>\n<p dir=\"ltr\">C\u00e2u 5: Ch\u1ecdn m\u1ed9t c\u00e2u l\u1ec7nh kh\u00f4ng ch\u00ednh x\u00e1c v\u1ec1 \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a tia s\u00e1ng:<\/p>\n<p dir=\"ltr\">A. Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t nh\u01b0ng kh\u00f4ng \u0111\u1ed3ng t\u00ednh luy\u1ebfn \u00e1i, \u00e1nh s\u00e1ng kh\u00f4ng \u0111\u01b0\u1ee3c truy\u1ec1n theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<\/p>\n<p dir=\"ltr\">B. Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 \u0111\u1ed3ng t\u00ednh luy\u1ebfn \u00e1i, \u00e1nh s\u00e1ng \u0111i qua m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<\/p>\n<p dir=\"ltr\">C. tia s\u00e1ng l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng d\u00e2y truy\u1ec1n \u00e1nh s\u00e1ng v\u1edbi m\u1ed9t m\u0169i t\u00ean<\/p>\n<p dir=\"ltr\">D. Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t nh\u01b0ng \u0111\u1ed3ng t\u00ednh luy\u1ebfn \u00e1i, \u00e1nh s\u00e1ng lu\u00f4n tr\u00f4i theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<\/p>\n<p dir=\"ltr\">C\u00e2u 6: H\u00ecnh n\u00e0o \u0111\u1ea1i di\u1ec7n cho m\u1ed9t tia s\u00e1ng trong c\u00e1c h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y?<\/p>\n<p dir=\"ltr\">M\u1ed8T. <img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chum-sang-25.png\" alt=\"\" width=\"120\" height=\"25\"><\/p>\n<p dir=\"ltr\">B.<img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chum-sang-18.png\" alt=\"\" width=\"129\" height=\"21\"><\/p>\n<p dir=\"ltr\">C. <img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chum-sang-19.png\" alt=\"\" width=\"131\" height=\"24\"><\/p>\n<p dir=\"ltr\">D. <img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chum-sang-20.png\" alt=\"\" width=\"107\" height=\"46\"><\/p>\n<p dir=\"ltr\">C\u00e2u 7: C\u00f3 6 ng\u01b0\u1eddi b\u1ea1n A, B, C, D, E, G trong ph\u00f2ng \u0111\u01b0\u1ee3c ng\u0103n c\u00e1ch b\u1edfi m\u1ed9t b\u1ee9c t\u01b0\u1eddng c\u00f3 l\u1ed7 h\u1ed5ng. Xin vui l\u00f2ng cho t\u00f4i bi\u1ebft ai s\u1ebd g\u1eb7p nhau:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chum-sang-21.jpeg\" alt=\"\" width=\"105\" height=\"147\"><\/p>\n<p dir=\"ltr\">A. A v\u00e0 G s\u1ebd g\u1eb7p nhau<\/p>\n<p dir=\"ltr\">B. B v\u00e0 E s\u1ebd g\u1eb7p nhau<\/p>\n<p dir=\"ltr\">C. A v\u00e0 D s\u1ebd g\u1eb7p nhau<\/p>\n<p dir=\"ltr\">D. C v\u00e0 D s\u1ebd g\u1eb7p nhau<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn tr\u1ea3 l\u1eddi: <\/p>\n<p dir=\"ltr\">C\u00e2u 1: <\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: B. T\u1ea7m \u00e1nh s\u00e1ng xa h\u01a1n \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng d\u01b0\u1edbi d\u1ea1ng ch\u00f9m tia ph\u00e2n k\u1ef3<\/p>\n<p dir=\"ltr\">C\u00e2u 2: <\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: C. Kh\u00f4ng c\u00f3 giao \u0111i\u1ec3m, giao \u0111i\u1ec3m, chi\u1ec1u r\u1ed9ng<\/p>\n<p dir=\"ltr\">C\u00e2u 3: <\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: B. Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 \u00e1nh s\u00e1ng \u0111\u1ed3ng t\u00ednh l\u01a1 l\u1eedng tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<\/p>\n<p dir=\"ltr\">C\u00e2u 4: <\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: B. d\u1ea7m \u0111a d\u1ea1ng l\u00e0 d\u1ea7m tia s\u00e1ng tr\u00ean truy\u1ec1n c\u1ee7a ch\u00fang<\/p>\n<p dir=\"ltr\">C\u00e2u 5: <\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: D. Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t nh\u01b0ng kh\u00f4ng \u0111\u1ed3ng t\u00ednh luy\u1ebfn \u00e1i, \u00e1nh s\u00e1ng lu\u00f4n x\u1ebfp h\u00e0ng.<\/p>\n<p dir=\"ltr\">C\u00e2u 6: <\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: A. <\/p>\n<p dir=\"ltr\">C\u00e2u 7:<\/p>\n<p dir=\"ltr\">Ch\u00fang t\u00f4i c\u00f3: Trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 \u0111\u1ed3ng t\u00ednh luy\u1ebfn \u00e1i, \u00e1nh s\u00e1ng \u0111i qua m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<\/p>\n<p dir=\"ltr\">A &#8211; A, G b\u1ecb ch\u1eb7n b\u1edfi c\u00e1c b\u1ee9c t\u01b0\u1eddng<\/p>\n<p dir=\"ltr\">B &#8211; B, E b\u1ecb ch\u1eb7n b\u1edfi c\u00e1c b\u1ee9c t\u01b0\u1eddng<\/p>\n<p dir=\"ltr\">C &#8211; A, D b\u1ecb ch\u1eb7n b\u1edfi c\u00e1c b\u1ee9c t\u01b0\u1eddng<\/p>\n<p dir=\"ltr\">D &#8211; C, D c\u00f3 th\u1ec3 g\u1eb7p nhau v\u00ec ch\u00fang kh\u00f4ng b\u1ecb ch\u1eb7n b\u1edfi b\u1ee9c t\u01b0\u1eddng<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chum-sang-22.jpeg\" alt=\"\" width=\"118\" height=\"153\"><\/p>\n<p dir=\"ltr\">C\u00e2u tr\u1ea3 l\u1eddi: D. C v\u00e0 D s\u1ebd g\u1eb7p nhau<\/p>\n<p dir=\"ltr\">Tr\u00ean \u0111\u00e2y l\u00e0 nh\u1eefng g\u00ec ki\u1ebfn \u200b\u200bth\u1ee9c \u0111\u01b0\u1ee3c chia s\u1ebb v\u1ec1 ch\u00f9m tia v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a ch\u00f9m s\u00e1ng trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y. Hy v\u1ecdng, d\u1ef1a tr\u00ean vi\u1ec7c chia s\u1ebb \u1edf tr\u00ean, b\u1ea1n c\u00f3 th\u1ec3 ho\u00e0n to\u00e0n t\u1ef1 tin \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c h\u00ecnh th\u1ee9c b\u00e0i t\u1eadp v\u1ec1 nh\u00e0 m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3. Ngo\u00e0i ra, h\u00e3y l\u00e0m theo ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n \u0111\u1ec3 c\u00f3 th\u1ec3 c\u1eadp nh\u1eadt c\u00e1c b\u00e0i h\u1ecdc h\u1eefu \u00edch m\u1ed9t c\u00e1ch nhanh ch\u00f3ng.<\/p>\n<p dir=\"ltr\">N\u1ebfu b\u1ea1n th\u1ea5y b\u00e0i vi\u1ebft h\u1eefu \u00edch, h\u00e3y nh\u1ea5p v\u00e0o n\u00fat &#8220;Chia s\u1ebb b\u00e0i vi\u1ebft&#8221; b\u00ean d\u01b0\u1edbi \u0111\u1ec3 b\u1ea1n b\u00e8 c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y. H\u00e3y \u0111\u1ec3 kh\u1ec9 \u0111i k\u00e8m trong su\u1ed1t qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp c\u1ee7a b\u1ea1n. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Truy\u1ec1n \u00e1nh s\u00e1ng l\u00e0 m\u1ed9t trong nh\u1eefng ki\u1ebfn \u200b\u200bth\u1ee9c th\u00fa v\u1ecb v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c d\u1ea1y trong Ch\u01b0\u01a1ng tr\u00ecnh V\u1eadt l\u00fd l\u1edbp 7. \u0110\u00e2y l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c thu\u1ed9c v\u1ec1 Ch\u01b0\u01a1ng I &#8211; Quang h\u1ecdc, ki\u1ebfn \u200b\u200bth\u1ee9c trong ch\u01b0\u01a1ng n\u00e0y th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n trong c\u00e1c c\u00e2u h\u1ecfi thi v\u00e0 l\u00e0 m\u1ed9t ch\u01b0\u01a1ng kh\u00e1 kh\u00f3 kh\u0103n trong ch\u01b0\u01a1ng&#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-20974","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20974","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=20974"}],"version-history":[{"count":1,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20974\/revisions"}],"predecessor-version":[{"id":24809,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20974\/revisions\/24809"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=20974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=20974"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=20974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}