{"id":8784,"date":"2021-11-21T15:10:08","date_gmt":"2021-11-21T08:10:08","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=8784"},"modified":"2021-11-21T16:03:07","modified_gmt":"2021-11-21T09:03:07","slug":"tai-sao-den-sau-cua-xe-dap-khong-co-bong-den-ma-lai-co-the-lap-lanh-anh-sang","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/tai-sao-den-sau-cua-xe-dap-khong-co-bong-den-ma-lai-co-the-lap-lanh-anh-sang\/","title":{"rendered":"T\u1ea1i sao \u0111\u00e8n sau c\u1ee7a xe \u0111\u1ea1p kh\u00f4ng c\u00f3 b\u00f3ng \u0111\u00e8n m\u00e0 l\u1ea1i c\u00f3 th\u1ec3 l\u1ea5p l\u00e1nh \u00e1nh s\u00e1ng?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Tr\u00ean c\u00e1i ch\u1eafn b\u00f9n \u0111\u1eb1ng sau xe \u0111\u1ea1p c\u00f3 m\u1ed9t \u0111\u00e8n m\u00e0u \u0111\u1ecf ho\u1eb7c m\u00e0u da cam. \u0110i\u1ec1u th\u00fa v\u1ecb l\u00e0 b\u00ean trong \u0111\u00e8n kh\u00f4ng c\u00f3 b\u00f3ng \u0111\u00e8n, nh\u01b0ng khi nh\u00ecn v\u00e0o ta l\u1ea1i th\u1ea5y l\u1ea5p l\u00e1nh \u00e1nh s\u00e1ng, nh\u1ea5t l\u00e0 v\u00e0o ban \u0111\u00eam, \u00e1nh s\u00e1ng c\u1ee7a n\u00f3 c\u00e0ng r\u00f5. T\u1ea1i sao v\u1eady?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay t\u1eeb n\u0103m 30 c\u1ee7a th\u1ebf k\u1ef7 XX, xe \u0111\u1ea1p \u0111\u00e3 tr\u1edf th\u00e0nh ph\u01b0\u01a1ng ti\u1ec7n giao th\u00f4ng th\u1eddi th\u01b0\u1ee3ng \u1edf m\u1ed9t v\u1ed1 v\u00f9ng th\u00e0nh th\u1ecb. Tuy nhi\u00ean, v\u00e0o ban \u0111\u00eam, xe \u0111\u1ea1p \u0111i \u0111i l\u1ea1i l\u1ea1i kh\u1eafp \u0111\u1ea7u \u0111\u01b0\u1eddng ng\u00f5 ph\u1ed1 \u0111\u00e3 g\u00e2y n\u00ean nhi\u1ec1u phi\u1ec1n to\u00e1i cho \u00f4 t\u00f4, s\u1ef1 c\u1ed1 giao th\u00f4ng x\u1ea3y ra th\u01b0\u1eddng xuy\u00ean. Th\u1ebf l\u00e0, Ch\u00ednh ph\u1ee7 Anh \u0111\u00e3 y\u00eau c\u1ea7u c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t xe \u0111\u1ea1p c\u1ea7n ph\u1ea3i l\u1eafp \u0111\u00e8n chi\u1ebfu s\u00e1ng v\u00e0 k\u00ednh ph\u1ea3n quang \u1edf tr\u01b0\u1edbc v\u00e0 sau xe \u0111\u1ea1p. Trong \u0111\u00f3 vi\u1ec7c <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">thi\u1ebft k\u1ebf<\/a> k\u00ednh ph\u1ea3n quang \u0111\u00e3 l\u00e0m cho c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t r\u1ea5t \u0111au \u0111\u1ea7u, b\u1edfi v\u00ec c\u00e1c k\u00ednh ph\u1eb3ng th\u00f4ng th\u01b0\u1eddng kh\u00f4ng th\u1ec3 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u1ee7a \u00f4 t\u00f4 tr\u1edf l\u1ea1i theo &#8220;\u0111\u01b0\u1eddng c\u0169&#8221;. Qua nhi\u1ec1u l\u1ea7n nghi\u00ean c\u1ee9u nguy\u00ean l\u00fd ph\u1ea3n x\u1ea1 c\u1ee7a tia s\u00e1ng, cu\u1ed1i c\u00f9ng ng\u01b0\u1eddi ta \u0111\u00e3 ch\u1ebf t\u1ea1o ra m\u1ed9t c\u01a1 c\u1ea5u ph\u1ea3n x\u1ea1 kh\u00e1 l\u00fd t\u01b0\u1edfng. B\u1ec1 m\u1eb7t c\u1ee7a n\u00f3 l\u00e0 m\u1ed9t t\u1ea5m k\u00ednh ph\u1eb3ng, b\u00ean trong c\u00f3 nhi\u1ec1u h\u00ecnh ch\u00f3p, m\u1ed7i h\u00ecnh ch\u00f3p c\u00f3 ba m\u1eb7t c\u00f4n th\u1eb3ng g\u00f3c v\u1edbi nhau h\u1ee3p th\u00e0nh, h\u00ecnh th\u00e0nh ba m\u1eb7t ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng. \u0110\u00f3 l\u00e0 b\u1ed9 ph\u1ea3n x\u1ea1 g\u00f3c. V\u00ec 3 m\u1eb7t ph\u1ea3n x\u1ea1 c\u1ee7a b\u1ed9 ph\u1eadn c\u1ee7a b\u1ed9 ph\u1ea3n x\u1ea1 g\u00f3c th\u1eb3ng g\u00f3c v\u1edbi nhau, cho n\u00ean d\u00f9 \u00e1nh s\u00e1ng chi\u1ebfu v\u00e0o m\u1eb7t k\u00ednh \u1edf b\u1ea5t c\u1ee9 g\u00f3c \u0111\u1ed9 n\u00e0o, th\u00ec \u00e1nh s\u00e1ng v\u1eabn ph\u1ea3n h\u1ed3i tr\u1edf l\u1ea1i theo ph\u01b0\u01a1ng h\u01b0\u1edbng ban \u0111\u1ea7u m\u1ed9t c\u00e1ch &#8220;th\u1ea7n k\u1ef3&#8221;, \u0111i\u1ec1u \u0111\u00f3 khi\u1ebfn cho ng\u01b0\u1eddi l\u00e1i \u00f4 t\u00f4 \u0111i \u0111\u1eb1ng sau xe \u0111\u1ea1p, d\u00f9 \u1edf g\u00f3c \u0111\u1ed9 n\u00e0o c\u0169ng th\u1ea5y \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1. H\u01a1n n\u1eefa, \u1edf b\u1ed9 ph\u1eadn ph\u1ea3n x\u1ea1 g\u00f3c ng\u01b0\u1eddi ta d\u00f9ng k\u00ednh m\u00e0u \u0111\u1ecf ho\u1eb7c m\u00e0u da cam, cho \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 tr\u1edf th\u00e0nh m\u00e0u \u0111\u1ecf ho\u1eb7c m\u00e0u da cam c\u00f3 &#8220;s\u1ee9c xuy\u00ean qua&#8221; r\u1ea5t m\u1ea1nh, n\u00ean c\u00e0ng c\u00f3 th\u1ec3 g\u00e2y ch\u00fa \u00fd c\u1ee7a th\u1ecb gi\u00e1c. Ngo\u00e0i ra, k\u00ednh ph\u1ea3n quang m\u00e0u \u0111\u1ecf c\u00f3 v\u1ebb \u0111\u1eb9p ri\u00eang, l\u1eafp \u0111\u1eb1ng sau nh\u01b0 m\u1ed9t v\u1eadt trang tr\u00ed c\u0169ng kh\u00e1 tuy\u1ec7t \u0111\u1ea5y ch\u1ee9!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1eb7c t\u00ednh quang h\u1ecdc m\u00e0 b\u1ed9 ph\u1ea3n x\u1ea1 g\u00f3c c\u00f3 \u0111\u01b0\u1ee3c \u0111\u00e3 g\u00e2y n\u00ean s\u1ef1 ch\u00fa \u00fd \u0111\u1eb7c bi\u1ec7t c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc, n\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong vi\u1ec7c th\u0103m d\u00f2 V\u0169 Tr\u1ee5. V\u1edbi b\u1ed9 ph\u1ea3n x\u1ea1 g\u00f3c kh\u00e1 l\u1edbn ch\u1ebf t\u1ea1o b\u1eb1ng th\u1ea1ch anh (quartz) c\u00f3 th\u1ec3 l\u1eafp tr\u00ean v\u1ec7 tinh nh\u00e2n t\u1ea1o, ngo\u00e0i ra c\u00f2n \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean nh\u1eefng \u0111\u1ecba \u0111i\u1ec3m kh\u00e1c nhau c\u1ee7a b\u1ec1 M\u1eb7t Tr\u0103ng. Khi con ng\u01b0\u1eddi t\u1eeb Tr\u00e1i \u0110\u1ea5t ph\u00e1t tia laze l\u00ean M\u1eb7t Tr\u0103ng, c\u00e1c b\u1ed9 ph\u1ea3n x\u1ea1 g\u00f3c \u0111\u00f3 c\u00f3 th\u1ec3 ph\u1ea3n x\u1ea1 c\u00e1c tia s\u00e1ng \u0111\u00f3 tr\u1edf v\u1ec1 m\u00e1y ph\u00e1t, c\u00e1c nh\u00e0 khoa h\u1ecdc nh\u1edd \u0111\u00f3 \u0111\u1ec3 nghi\u00ean c\u1ee9u V\u0169 Tr\u1ee5. Do v\u1eady, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng, c\u00f4ng d\u1ee5ng c\u1ee7a b\u1ed9 ph\u1ea3n x\u1ea1 g\u00f3c nho nh\u1ecf \u0111\u00f3 l\u1ea1i kh\u00f4ng nh\u1ecf ch\u00fat n\u00e0o!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb kh\u00f3a: \u0110\u00e8n sau xe \u0111\u1ea1p; \u0110\u1ed9 ph\u1ea3n x\u1ea1 g\u00f3c<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tr\u00ean c\u00e1i ch\u1eafn b\u00f9n \u0111\u1eb1ng sau xe \u0111\u1ea1p c\u00f3 m\u1ed9t \u0111\u00e8n m\u00e0u \u0111\u1ecf ho\u1eb7c m\u00e0u da cam. \u0110i\u1ec1u th\u00fa v\u1ecb l\u00e0 b\u00ean trong \u0111\u00e8n kh\u00f4ng c\u00f3 b\u00f3ng \u0111\u00e8n, nh\u01b0ng khi nh\u00ecn v\u00e0o ta l\u1ea1i th\u1ea5y l\u1ea5p l\u00e1nh \u00e1nh s\u00e1ng, nh\u1ea5t l\u00e0 v\u00e0o ban \u0111\u00eam, \u00e1nh s\u00e1ng c\u1ee7a n\u00f3 c\u00e0ng r\u00f5. T\u1ea1i sao v\u1eady? Ngay t\u1eeb [&hellip;]<\/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":[15,16],"tags":[],"class_list":["post-8784","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-ky-thuat"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8784","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=8784"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8784\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8784"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8784"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}