V\u00e0o ban \u0111\u00eam \u1edf c\u00e1c th\u00e0nh ph\u1ed1, \u0111\u00f4 th\u1ecb, nh\u00e0 nh\u00e0 \u0111\u00e3 l\u00ean \u0111\u00e8n. N\u00e0o l\u00e0 \u0111\u00e8n s\u00e1ng tr\u1eafng, \u0111\u00e8n \u00e1nh s\u00e1ng ban ng\u00e0y, \u0111\u00e8n \u00e1nh s\u00e1ng c\u1ea7u v\u1ed3ng nhi\u1ec1u m\u00e0u, khoe s\u1eafc lung linh gi\u1ed1ng nh\u01b0 ng\u00e0y h\u1ed9i hoa \u0111\u0103ng.<\/p>\n\n\n\n
\u0110\u00e8n c\u1ea7u v\u1ed3ng r\u1ea5t \u0111\u1eb9p, th\u1eadt x\u1ee9ng v\u1edbi t\u00ean g\u1ecdi \u0111\u00f3. Nh\u01b0ng t\u1ea1i sao ng\u01b0\u1eddi ta l\u1ea1i g\u1ecdi l\u00e0 \u0111\u00e8n \u00e1nh s\u00e1ng c\u1ea7u v\u1ed3ng? \u0110i\u1ec1u \u0111\u00f3 li\u00ean quan \u0111\u1ebfn m\u1ed9t c\u00e2u chuy\u1ec7n l\u00fd th\u00fa.<\/p>\n\n\n\n
V\u00e0o n\u0103m 1898, hai nh\u00e0 ho\u00e1 h\u1ecdc Anh l\u00e0 Rumsei v\u00e0 Gravers \u0111\u00e3 quan s\u00e1t trong kh\u00f4ng kh\u00ed l\u1ecfng c\u00f3 m\u1ed9t ch\u1ea5t kh\u00ed l\u1ea1, hai \u00f4ng \u0111\u00e3 cho ch\u1ea5t kh\u00ed n\u00e0y v\u00e0o \u1ed1ng nghi\u1ec7m v\u00e0 b\u1ecbt k\u00edn. Khi cho d\u00f2ng \u0111i\u1ec7n ch\u1ea1y v\u00e0o hai \u0111\u1ea7u \u1ed1ng nghi\u1ec7m, \u1ed1ng nghi\u1ec7m thu\u1ef7 tinh v\u1ed1n kh\u00f4ng m\u00e0u \u0111\u00e3 r\u1ef1c s\u00e1ng m\u00e0u \u0111\u1ecf r\u1ea5t \u0111\u1eb9p.<\/p>\n\n\n\n
B\u00f3ng \u0111\u00e8n n\u00ea\u00f4ng \u0111\u1ea7u ti\u00ean tr\u00ean th\u1ebf gi\u1edbi \u0111\u00e3 xu\u1ea5t hi\u1ec7n ng\u1eabu nhi\u00ean nh\u01b0 th\u1ebf \u0111\u00f3.<\/p>\n\n\n\n
Hai nh\u00e0 ho\u00e1 h\u1ecdc h\u1ebft s\u1ee9c vui m\u1eebng. Lo\u1ea1i kh\u00ed m\u1edbi g\u1eafn li\u1ec1n v\u1edbi “\u0111\u00e8n \u0111\u1ecf”, hai nh\u00e0 ho\u00e1 h\u1ecdc l\u1ea5y t\u00ean g\u1ecdi Hy L\u1ea1p l\u00e0 “neos” c\u00f3 ngh\u0129a l\u00e0 m\u1edbi v\u00e0 \u0111\u1eb7t t\u00ean l\u00e0 n\u00ea\u00f4ng. Khi n\u1ea1p kh\u00ed n\u00ea\u00f4ng v\u00e0o \u1ed1ng th\u1ee7y tinh c\u00f3 h\u00ecnh d\u00e1ng kh\u00e1c nhau, ta c\u00f3 \u0111\u00e8n m\u00e0u \u0111\u1ecf. Th\u1ebf nh\u01b0ng ch\u1ec9 d\u00f9ng n\u00ea\u00f4ng th\u00ec ch\u1ec9 c\u00f3 m\u00e0u \u0111\u1ecf m\u00e0 kh\u00f4ng c\u00f3 c\u00e1c m\u00e0u kh\u00e1c, kh\u00f4ng \u0111\u1ee7 m\u00e0u trong \u00e1nh s\u00e1ng c\u1ea7u v\u1ed3ng. Mu\u1ed1n c\u00f3 \u0111\u1ee7 \u00e1nh s\u00e1ng c\u1ea7u v\u1ed3ng \u00edt ra c\u00f2n c\u1ea7n c\u00e1c m\u00e0u v\u00e0ng, m\u00e0u l\u1ee5c, m\u00e0u lam v\u00e0 \u00e1nh s\u00e1ng tr\u1eafng. Mu\u1ed1n c\u00f3 c\u00e1c m\u00e0u v\u00e0ng, m\u00e0u l\u1ee5c, m\u00e0u lam c\u1ea7n ph\u1ea3i d\u00f9ng c\u00e1c b\u1ed9t c\u00f3 ch\u1ea5t ph\u00e1t quang m\u00e0u t\u01b0\u01a1ng \u1ee9ng.<\/p>\n\n\n\n
Gi\u1ea3 s\u1eed \u0111em ch\u1ea5t ph\u00e1t quang m\u00e0u lam s\u01a1n ph\u1ee7 v\u00e0o m\u1eb7t trong \u1ed1ng thu\u1ef7 tinh, u\u1ed1n \u1ed1ng thu\u1ef7 tinh th\u00e0nh ch\u1eef, th\u00e0nh h\u00ecnh hoa v\u0103n, l\u1eafp c\u00e1c \u0111i\u1ec7n c\u1ef1c, h\u00fat s\u1ea1ch kh\u00f4ng kh\u00ed trong \u1ed1ng. N\u1ea1p kh\u00ed n\u00ea\u00f4ng v\u00e0o \u1ed1ng. \u0110\u00f3ng \u0111i\u1ec7n, ta s\u1ebd c\u00f3 h\u00ecnh ch\u1eef ho\u1eb7c hoa v\u0103n m\u00e0u ph\u1ea5n h\u1ed3ng. N\u1ebfu s\u01a1n ph\u1ee7 b\u1eb1ng ch\u1ea5t ph\u00e1t quang m\u00e0u lam l\u00ean m\u1eb7t trong \u1ed1ng thu\u1ef7 tinh, n\u1ea1p argon v\u00e0 thu\u1ef7 ng\u00e2n v\u00e0o \u1ed1ng th\u1ee7y tinh ta s\u1ebd \u0111\u01b0\u1ee3c \u1ed1ng \u0111\u00e8n m\u00e0u lam t\u01b0\u01a1i. N\u1ebfu l\u1ea1i s\u01a1n ph\u1ee7 ch\u1ea5t ph\u00e1t quang m\u00e0u l\u1ee5c, n\u1ea1p kh\u00ed n\u00ea\u00f4ng ta s\u1ebd \u0111\u01b0\u1ee3c \u1ed1ng \u0111\u00e8n c\u00f3 m\u00e0u \u0111\u1ecf t\u01b0\u01a1i. N\u1ebfu thay kh\u00ed n\u00ea\u00f4ng b\u1eb1ng kh\u00ed argon v\u00e0 thu\u1ef7 ng\u00e2n ta s\u1ebd c\u00f3 \u1ed1ng \u0111\u00e8n m\u00e0u l\u1ee5c. D\u00f9ng \u0111\u00e8n c\u1ea7u v\u1ed3ng trang tr\u00ed cho c\u1eeda hi\u1ec7u, cho c\u00e1c b\u1ea3ng qu\u1ea3ng c\u00e1o l\u00e0m th\u00e0nh ph\u1ed1 th\u00eam \u0111\u1eb9p.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: \u0110\u00e8n c\u1ea7u v\u1ed3ng; Kh\u00ed n\u00ea\u00f4ng.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
V\u00e0o ban \u0111\u00eam \u1edf c\u00e1c th\u00e0nh ph\u1ed1, \u0111\u00f4 th\u1ecb, nh\u00e0 nh\u00e0 \u0111\u00e3 l\u00ean \u0111\u00e8n. N\u00e0o l\u00e0 \u0111\u00e8n s\u00e1ng tr\u1eafng, \u0111\u00e8n \u00e1nh s\u00e1ng ban ng\u00e0y, \u0111\u00e8n \u00e1nh s\u00e1ng c\u1ea7u v\u1ed3ng nhi\u1ec1u m\u00e0u, khoe s\u1eafc lung linh gi\u1ed1ng nh\u01b0 ng\u00e0y h\u1ed9i hoa \u0111\u0103ng. \u0110\u00e8n c\u1ea7u v\u1ed3ng r\u1ea5t \u0111\u1eb9p, th\u1eadt x\u1ee9ng v\u1edbi t\u00ean g\u1ecdi \u0111\u00f3. Nh\u01b0ng t\u1ea1i sao […]<\/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":[8,15],"tags":[],"class_list":["post-7982","post","type-post","status-publish","format-standard","hentry","category-hoa-hoc","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7982","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=7982"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7982\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}