\u0110\u00e8n pha gi\u1ed1ng nh\u01b0 m\u1ed9t c\u00e1i \u0111\u00e8n pin l\u1edbn, c\u00f3 \u00e1nh s\u00e1ng l\u1edbn m\u00e0 s\u00e1ng ch\u00f3i, qu\u00e9t tan b\u1ea7u tr\u1eddi \u0111\u00eam tr\u00f4ng r\u1ea5t r\u1ef1c r\u1ee1. C\u00f3 bao gi\u1edd b\u1ea1n t\u1ef1 h\u1ecfi: \u00e1nh s\u00e1ng c\u1ee7a \u0111\u00e8n pha v\u00ec sao l\u1ea1i chi\u1ebfu ra song song hay ch\u01b0a?<\/p>\n\n\n\n
Ho\u00e1 ra l\u00e0 v\u1ecf ngo\u00e0i c\u1ee7a \u0111\u00e8n pha \u0111\u1ec1u c\u1ea5u t\u1ea1o d\u1ea1ng v\u00e1t. Lo\u1ea1i h\u00ecnh d\u1ea1ng n\u00e0y g\u1ecdi l\u00e0 m\u1eb7t parabon. M\u1eb7t trong c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o h\u1ebft s\u1ee9c b\u00f3ng lo\u00e1ng, gi\u1ed1ng nh\u01b0 m\u1ed9t m\u1eb7t k\u00ednh l\u00f5m, l\u00e0m cho \u00e1nh \u0111\u00e8n chi\u1ebfu l\u00ean m\u1eb7t b\u00ean trong c\u00f3 th\u1ec3 ph\u1ea3n x\u1ea1 ra r\u1ea5t t\u1ed1t. V\u1ea3 l\u1ea1i, b\u00f3ng \u0111\u00e8n c\u1ee7a \u0111\u00e8n pha l\u1eafp \u0111\u00fang l\u00ean ti\u00eau \u0111i\u1ec3m c\u1ee7a m\u1eb7t parabon \u0111\u00f3. Nh\u01b0 v\u1eady, \u00e1nh s\u00e1ng t\u1eeb b\u00f3ng \u0111\u00e8n chi\u1ebfu ra, sau khi r\u1ecdi v\u00e0o m\u1eb7t trong, khi ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i \u0111\u1ec1u tr\u1edf th\u00e0nh nh\u1eefng tia song song ph\u00e1t ra ngo\u00e0i.<\/p>\n\n\n\n
N\u1ebfu v\u00f9ng ph\u00e1t s\u00e1ng c\u1ee7a b\u00f3ng \u0111\u00e8n kh\u00f4ng th\u1ec3 t\u1eadp trung h\u1ebft l\u00ean ti\u00eau \u0111i\u1ec3m, ho\u1eb7c l\u00e0 m\u1eb7t parabon khi ch\u1ebf t\u1ea1o kh\u00f4ng \u0111\u01b0\u1ee3c ho\u00e0n to\u00e0n chu\u1ea9n x\u00e1c th\u00ec nh\u1eefng tia s\u00e1ng chi\u1ebfu ra kh\u00f4ng th\u1ec3 gi\u1eef \u0111\u01b0\u1ee3c t\u00ednh ch\u1ea5t song song ho\u00e0n h\u1ea3o. C\u00e1c tia s\u00e1ng c\u1ee7a \u0111\u00e8n pin ch\u00ednh v\u00ec l\u1ebd \u0111\u00f3 m\u00e0 kh\u00f4ng th\u1ec3 song song chi\u1ebfu th\u1eb3ng ra. C\u00f2n \u0111\u00e8n pha c\u00f3 th\u1ec3 coi l\u00e0 \u0111\u01b0\u1ee3c l\u00e0m t\u01b0\u01a1ng \u0111\u1ed1i chu\u1ea9n x\u00e1c, cho n\u00ean \u00e1nh s\u00e1ng c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 chi\u1ebfu ra kh\u00e1 l\u00e0 song song. Th\u1ef1c ra, \u0103ngten thu v\u1ec7 tinh c\u0169ng l\u00e0 m\u1ed9t m\u1eb7t parabon, ch\u00ednh l\u00e0 \u0111\u1ec3 thu s\u00f3ng \u0111i\u1ec7n t\u1eeb cho t\u1ed1t h\u01a1n.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: \u0110\u00e8n pha; M\u1eb7t parabon; Ti\u00eau \u0111i\u1ec3m.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
\u0110\u00e8n pha gi\u1ed1ng nh\u01b0 m\u1ed9t c\u00e1i \u0111\u00e8n pin l\u1edbn, c\u00f3 \u00e1nh s\u00e1ng l\u1edbn m\u00e0 s\u00e1ng ch\u00f3i, qu\u00e9t tan b\u1ea7u tr\u1eddi \u0111\u00eam tr\u00f4ng r\u1ea5t r\u1ef1c r\u1ee1. C\u00f3 bao gi\u1edd b\u1ea1n t\u1ef1 h\u1ecfi: \u00e1nh s\u00e1ng c\u1ee7a \u0111\u00e8n pha v\u00ec sao l\u1ea1i chi\u1ebfu ra song song hay ch\u01b0a? Ho\u00e1 ra l\u00e0 v\u1ecf ngo\u00e0i c\u1ee7a \u0111\u00e8n pha \u0111\u1ec1u c\u1ea5u […]<\/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-5778","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\/5778","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=5778"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5778\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}