{"id":9474,"date":"2021-11-21T16:45:48","date_gmt":"2021-11-21T09:45:48","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=9474"},"modified":"2021-11-21T18:37:53","modified_gmt":"2021-11-21T11:37:53","slug":"vi-sao-o-thanh-pho-ban-dem-dan-dan-cang-it-thay-sao-sang","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/vi-sao-o-thanh-pho-ban-dem-dan-dan-cang-it-thay-sao-sang\/","title":{"rendered":"V\u00ec sao \u1edf th\u00e0nh ph\u1ed1 ban \u0111\u00eam d\u1ea7n d\u1ea7n c\u00e0ng \u00edt th\u1ea5y sao s\u00e1ng?"},"content":{"rendered":"\n<p>R\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi t\u00ecm th\u1ea5y trong s\u00e1ch s\u1ef1 mi\u00eau t\u1ea3 v\u1ec1 b\u1ea7u tr\u1eddi ban \u0111\u00eam \u0111\u1ea7y sao l\u1ea5p l\u00e1nh, \u0111\u1eb9p nh\u01b0 tranh v\u00e0 \u0111\u1ea7y thi v\u1ecb. Nh\u01b0ng ng\u00e0y nay, tr\u1ebb em th\u00e0nh ph\u1ed1 kh\u00f3 m\u00e0 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c c\u1ea3nh t\u01b0\u1ee3ng \u0111\u1eb9p \u0111\u1ebd rung \u0111\u1ed9ng l\u00f2ng ng\u01b0\u1eddi nh\u01b0 th\u1ebf. N\u0103m 1998, c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc ng\u01b0\u1eddi Anh \u0111\u00e3 l\u00e0m m\u1ed9t cu\u1ed9c \u0111i\u1ec1u tra trong s\u1ed1 <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a> ti\u1ec3u h\u1ecdc, k\u1ebft qu\u1ea3 ch\u1ee9ng t\u1ecf: ch\u1ec9 c\u00f3 10% s\u1ed1 tr\u1ebb em nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c d\u1ea3i Ng\u00e2n H\u00e0 tr\u00ean b\u1ea7u tr\u1eddi. V\u00ec sao l\u1ea1i nh\u01b0 th\u1ebf? \u0110\u00f3 l\u00e0 do \u00e1nh s\u00e1ng c\u1ee7a x\u00e3 h\u1ed9i hi\u1ec7n \u0111\u1ea1i g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn quang c\u1ea3nh \u0111\u1eb9p \u0111\u1ebd c\u1ee7a b\u1ea7u tr\u1eddi. \u00d4 nhi\u1ec5m \u00e1nh s\u00e1ng l\u00e0 ch\u1ec9 hi\u1ec7n t\u01b0\u1ee3ng do b\u1ee9c x\u1ea1 \u00e1nh s\u00e1ng qu\u00e1 m\u1ee9c g\u00e2y cho s\u1ea3n xu\u1ea5t, cu\u1ed9c s\u1ed1ng v\u00e0 s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi nh\u1eefng \u1ea3nh h\u01b0\u1edfng kh\u00f4ng t\u1ed1t. \u00d4 nhi\u1ec5m \u00e1nh s\u00e1ng khi\u1ebfn cho nh\u1eefng ng\u00f4i sao tr\u00ean tr\u1eddi v\u1ed1n r\u1ea5t s\u00e1ng r\u00f5, y\u00ean t\u0129nh \u0111\u00e3 tr\u1edf th\u00e0nh kh\u00f4ng th\u1ec3 n\u00e0o nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c b\u00ecnh th\u01b0\u1eddng, c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc c\u0169ng ch\u1ecbu s\u1ef1 t\u00e1c h\u1ea1i t\u01b0\u01a1ng t\u1ef1.<\/p>\n\n\n\n<p>V\u1eady t\u1eeb \u0111\u00e2u g\u00e2y n\u00ean \u00f4 nhi\u1ec5m \u00e1nh s\u00e1ng? Ngu\u1ed3n g\u00e2y n\u00ean \u00f4 nhi\u1ec5m \u00e1nh s\u00e1ng l\u00e0 do \u00e1nh s\u00e1ng c\u1ee7a \u0111\u00e8n chi\u1ebfu s\u00e1ng, \u0111\u00e8n trang tr\u00ed qu\u1ea3ng c\u00e1o \u1edf c\u00e1c ng\u00f4i nh\u00e0 cao t\u1ea7ng v\u00e0 \u00e1nh s\u00e1ng \u0111\u00e8n cao \u00e1p tr\u00ean c\u00e1c tr\u1ee5c giao th\u00f4ng th\u00e0nh ph\u1ed1 v\u00e0 khu d\u00e2n c\u01b0 g\u00e2y ra. Ngu\u1ed3n s\u00e1ng n\u00e0y ng\u00e0y c\u00e0ng nhi\u1ec1u, ng\u00e0y c\u00e0ng s\u00e1ng h\u01a1n, trong \u0111\u00f3 ph\u1ea7n l\u1edbn \u00e1nh s\u00e1ng \u0111\u1ec1u \u0111\u01b0\u1ee3c chi\u1ebfu l\u00ean tr\u1eddi, tr\u1ef1c ti\u1ebfp c\u1ea3n tr\u1edf s\u1ef1 quan s\u00e1t c\u1ee7a ch\u00fang ta \u0111\u1ed1i v\u1edbi c\u00e1c ng\u00f4i sao. Ch\u00fang ta \u0111\u1ec1u bi\u1ebft m\u1ed9t ng\u1ecdn n\u1ebfn \u0111\u01b0\u1ee3c th\u1eafp s\u00e1ng trong \u0111\u00eam t\u1ed1i th\u00ec c\u1ea3m th\u1ea5y r\u1ea5t s\u00e1ng, nh\u01b0ng khi \u0111\u1eb7t n\u00f3 d\u01b0\u1edbi ng\u1ecdn \u0111\u00e8n s\u00e1ng tr\u1eafng 100 W th\u00ec \u0111\u1ed9 s\u00e1ng c\u1ee7a n\u00f3 tr\u1edf n\u00ean m\u1edd. Ban \u0111\u00eam trong th\u00e0nh ph\u1ed1, ch\u00fang ta kh\u00f4ng nh\u00ecn th\u1ea5y sao tr\u00ean tr\u1eddi c\u0169ng l\u00e0 do nguy\u00ean l\u00ed \u0111\u00f3.<\/p>\n\n\n\n<p>Ngo\u00e0i ra, \u1edf t\u1ea7ng kh\u00f4ng gian th\u1ea5p quanh Tr\u00e1i \u0110\u1ea5t \u0111\u1ea7y c\u00e1c v\u1ec7 tinh nh\u00e2n t\u1ea1o qu\u0129 \u0111\u1ea1o th\u1ea5p. Nh\u1eefng \u0103ng ten b\u1eb1ng nh\u00f4m \u0111\u01b0\u1ee3c m\u1ea1 b\u1ea1c v\u00e0 nh\u1eefng t\u1ea5m pin M\u1eb7t Tr\u1eddi to l\u1edbn d\u01b0\u1edbi \u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi \u0111\u00e3 ph\u00e1t ra \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 l\u00e0m l\u00f3a m\u1eaft. \u0110i\u1ec1u \u0111\u00f3 c\u0169ng l\u00e0m r\u1ed1i lo\u1ea1n s\u1ef1 quan s\u00e1t c\u1ee7a ch\u00fang ta \u0111\u1ed1i v\u1edbi c\u00e1c ng\u00f4i sao.<\/p>\n\n\n\n<p>V\u00ec \u1ea3nh h\u01b0\u1edfng \u00f4 nhi\u1ec5m quang c\u1ee7a c\u00e1c khu v\u1ef1c xung quanh m\u00e0 \u0110\u00e0i thi\u00ean v\u0103n C\u00f4pecnic n\u1ed5i ti\u1ebfng th\u1ebf gi\u1edbi c\u1ee7a Anh \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng n\u0103m 1675 \u0111\u00e3 kh\u00f4ng th\u1ec3 ti\u1ebfp t\u1ee5c l\u00e0m vi\u1ec7c b\u00ecnh th\u01b0\u1eddng, do \u0111\u00f3 n\u0103m 1998 bu\u1ed9c ph\u1ea3i \u0111\u00f3ng c\u1eeda. Nhi\u1ec1u qu\u1ed1c gia b\u1eaft bu\u1ed9c ph\u1ea3i d\u1eddi c\u00e1c \u0111\u00e0i thi\u00ean v\u0103n ra ngo\u00e0i \u0111\u1ea3o gi\u1eefa bi\u1ec3n ho\u1eb7c d\u1eddi l\u00ean nh\u1eefng \u0111\u1ec9nh n\u00fai cao tuy\u1ebft tr\u1eafng m\u00eanh m\u00f4ng.<\/p>\n\n\n\n<p>T\u1eeb kho\u00e1: \u00d4 nhi\u1ec5m \u00e1nh s\u00e1ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>R\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi t\u00ecm th\u1ea5y trong s\u00e1ch s\u1ef1 mi\u00eau t\u1ea3 v\u1ec1 b\u1ea7u tr\u1eddi ban \u0111\u00eam \u0111\u1ea7y sao l\u1ea5p l\u00e1nh, \u0111\u1eb9p nh\u01b0 tranh v\u00e0 \u0111\u1ea7y thi v\u1ecb. Nh\u01b0ng ng\u00e0y nay, tr\u1ebb em th\u00e0nh ph\u1ed1 kh\u00f3 m\u00e0 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c c\u1ea3nh t\u01b0\u1ee3ng \u0111\u1eb9p \u0111\u1ebd rung \u0111\u1ed9ng l\u00f2ng ng\u01b0\u1eddi nh\u01b0 th\u1ebf. N\u0103m 1998, c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc [&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":[15,17],"tags":[],"class_list":["post-9474","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-moi-truong"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9474","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=9474"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9474\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}