T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 10 – Arkady Leokum<\/p>\n\n\n\n
\u0110\u00fang v\u1eady, \u0111\u1eb7c bi\u1ec7t trong th\u1eddi ti\u1ebft n\u00f3ng v\u00e0 \u1ea9m. S\u00f3ng \u00e2m \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh m\u1ed7i khi c\u00f3 m\u1ed9t c\u1ed9t kh\u00f4ng kh\u00ed – ho\u1eb7c b\u1ea5t k\u00ec th\u1ee9 g\u00ec kh\u00e1c – b\u1ecb n\u00e9n \u00e9p v\u00e0 k\u00e9o c\u0103ng lu\u00e2n phi\u00ean v\u1edbi nhau. \u00c2m thanh ti\u00eau hao m\u1ed9t l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng \u0111\u1ec3 h\u00ecnh th\u00e0nh s\u1ef1 dao \u0111\u1ed9ng trong kh\u00f4ng kh\u00ed nh\u01b0ng khi \u00e2m thanh lan r\u1ed9ng ra xa, s\u00f3ng \u00e2m cu\u1ed1i c\u00f9ng s\u1ebd t\u1eaft h\u1eb3n. Ri\u00eang vi\u1ec7c s\u00f3ng \u00e2m c\u00f3 th\u1ec3 truy\u1ec1n \u0111i bao xa t\u00f9y thu\u1ed9c m\u1ee9c \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng khi s\u00f3ng \u00e2m b\u1eaft \u0111\u1ea7u truy\u1ec1n \u0111i v\u00e0 t\u1ed1c \u0111\u1ed9 m\u00e0 s\u00f3ng \u00e2m lan \u0111i xa, v\u00e0 \u0111i\u1ec1u \u0111\u00f3 th\u00ec ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u00ed quy\u1ec3n.<\/p>\n\n\n\n
Th\u00f4ng th\u01b0\u1eddng, nh\u1eefng hi\u1ec7n t\u01b0\u1ee3ng li\u00ean quan \u0111\u1ebfn t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a l\u01b0u ch\u1ea5t nh\u01b0 kh\u00f4ng kh\u00ed, chi ti\u1ebft c\u1ee7a ch\u00fang th\u01b0\u1eddng r\u1ea5t ph\u1ee9c t\u1ea1p v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng tr\u1ef1c gi\u00e1c nh\u01b0ng k\u1ebft qu\u1ea3 cu\u1ed1i c\u00f9ng th\u00ec r\u1ea5t \u0111\u01a1n gi\u1ea3n: s\u00f3ng \u00e2m truy\u1ec1n \u0111i nhanh h\u01a1n nhi\u1ec1u khi th\u1eddi ti\u1ebft th\u1eadt s\u1ef1 \u1ea9m. T\u00e1c \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9 \u1ea9m r\u1ea5t m\u1ea1nh, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi \u00e2m thanh c\u00f3 t\u1ea7n s\u1ed1 cao, \u00e2m thanh truy\u1ec1n \u0111i xa h\u01a1n nhi\u1ec1u (ho\u1eb7c, n\u00f3i c\u00e1ch kh\u00e1c, s\u00f3ng \u00e2m c\u00f3 v\u1ebb nh\u01b0 \u0111\u1ebfn t\u1eeb m\u1ed9t n\u01a1i r\u1ea5t g\u1ea7n) khi \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i t\u0103ng l\u00ean kho\u1ea3ng 90% so v\u1edbi ban \u0111\u1ea7u. Ti\u1ebfng \u1ed3n m\u00e0 b\u00ecnh th\u01b0\u1eddng b\u1ea1n nghe ch\u1ec9 gi\u1ed1ng nh\u01b0 ti\u1ebfng s\u00f4i \u00e2m \u1ec9 s\u1ebd tr\u1edf n\u00ean r\u1ea5t r\u00f5, \u0111\u1eb7c bi\u1ec7t l\u00e0 ti\u1ebfng \u1ed3n ph\u00e1t ra t\u1eeb nh\u1eefng ngu\u1ed3n ri\u00eang r\u1ebd nh\u01b0 xe h\u01a1i ho\u1eb7c m\u00e1y bay.<\/p>\n\n\n\n
Theo UK Meteorological Office (V\u0103n ph\u00f2ng Kh\u00ed t\u01b0\u1ee3ng h\u1ecdc Anh Qu\u1ed1c), g\u1ea7n nh\u01b0 trong ng\u00e0y, \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i s\u1ebd gi\u1ea3m \u0111i kho\u1ea3ng 95% so v\u1edbi l\u00fac c\u00f3 \u0111\u1ed9 \u1ea9m cao nh\u1ea5t v\u00e0o s\u00e1ng s\u1edbm. \u0110i\u1ec1u n\u00e0y gi\u1ea3i th\u00edch r\u00f5 v\u00ec sao c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n giao th\u00f4ng v\u00e0 chim ch\u00f3c l\u1ea1i c\u00f3 v\u1ebb nh\u01b0 l\u00e0 nh\u1eefng v\u1eadt qu\u00e1 \u1ed3n \u00e0o tr\u01b0\u1edbc ti\u00ean trong bu\u1ed5i s\u00e1ng s\u1edbm.<\/p>\n\n\n\n
L\u00e0m c\u00e1ch n\u00e0o c\u00e1c \u0111\u01b0\u1eddng ray xe l\u1eeda hi\u1ec7n \u0111\u1ea1i \u0111\u1ed1i ph\u00f3 \u0111\u01b0\u1ee3c v\u1edbi th\u1eddi ti\u1ebft n\u00f3ng m\u00e0 kh\u00f4ng c\u1ea7n c\u00e1c m\u1ed1i n\u1ed1i gi\u00e3n n\u1edf \u0111\u01b0\u1ee3c?<\/p>\n\n\n\n
Sau khi c\u00e1c gi\u1edbi h\u1ea1n v\u1ec1 v\u1eadn t\u1ed1c \u00e1p \u0111\u1eb7t l\u00ean m\u1ea1ng l\u01b0\u1edbi t\u00e0u l\u1eeda \u1edf Anh Qu\u1ed1c n\u0103m 2003 nh\u1eb1m ng\u0103n ng\u1eeba vi\u1ec7c tr\u1eadt \u0111\u01b0\u1eddng ray th\u00ec c\u00f3 v\u1ebb nh\u01b0 ch\u1eb3ng c\u00f3 c\u00e1ch n\u00e0o c\u00e1c \u0111\u01b0\u1eddng ray xe l\u1eeda \u0111\u1ed1i ph\u00f3 \u0111\u01b0\u1ee3c v\u1edbi th\u1eddi ti\u1ebft n\u00f3ng. C\u00f2n n\u1eefa, m\u00f9a h\u00e8 n\u0103m 2003, ng\u01b0\u1eddi Anh c\u00f3 c\u00e1c ghi nh\u1eadn v\u1ec1 nhi\u1ec7t \u0111\u1ed9 \u0111\u1ee9t g\u00e3y m\u00e0 t\u1ea1i nhi\u1ec7t \u0111\u1ed9 \u0111\u00f3, m\u1ed9t v\u00e0i ph\u1ea7n c\u1ee7a \u0111\u01b0\u1eddng ray \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 520C. Cho r\u1eb1ng \u0111\u01b0\u1eddng ray xe l\u1eeda ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 \u00e2m v\u00e0o m\u00f9a \u0111\u00f4ng, li\u1ec7u m\u1ea1ng l\u01b0\u1edbi \u0111\u01b0\u1eddng ray c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u1ef1ng t\u1ed1t s\u1ef1 dao \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 qu\u00e1 l\u1edbn kh\u00f4ng.<\/p>\n\n\n\n
Trong c\u00e1c \u0111\u01b0\u1eddng ray ki\u1ec3u c\u0169, chi\u1ebfm kho\u1ea3ng m\u1ed9t ph\u1ea7n t\u01b0 m\u1ea1ng l\u01b0\u1edbi \u0111\u01b0\u1eddng ray Anh Qu\u1ed1c, c\u1ee9 m\u1ed7i \u0111o\u1ea1n ray d\u00e0i h\u01a1n 10m s\u1ebd c\u00f3 m\u1ed9t khe h\u1edf r\u1ed9ng kho\u1ea3ng 1cm \u0111\u1ec3 gi\u1ea3i quy\u1ebft s\u1ef1 gi\u00e3n n\u1edf c\u1ee7a \u0111\u01b0\u1eddng ray khi n\u00f3 b\u1ecb n\u00f3ng l\u00ean. C\u00e1c khe h\u1edf \u0111\u00f3 c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 gi\u00e3n n\u1edf khi d\u00e3y nhi\u1ec7t \u0111\u1ed9 dao \u0111\u1ed9ng trong kho\u1ea3ng 320C. \u0110\u01b0\u1eddng ray ki\u1ec3u m\u1edbi, c\u00f2n g\u1ecdi l\u00e0 \u0111\u01b0\u1eddng ray \u0111\u01b0\u1ee3c h\u00e0n li\u00ean t\u1ee5c (Continuously welded rail), \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 m\u1ed9t m\u1eb9o kh\u00e9o l\u00e9o trong \u0111\u00f3 c\u00e1c \u0111\u01b0\u1eddng ray th\u00e9p b\u1ecb k\u00e9o d\u00e3n khi n\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7t xu\u1ed1ng v\u00e0 h\u00e0n v\u00e0o v\u1ecb tr\u00ed c\u1ed1 \u0111\u1ecbnh. S\u1ef1 k\u00e9o gi\u00e3n c\u00f3 t\u00e1c d\u1ee5ng l\u00e0 t\u1ea1o th\u00eam kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c nguy\u00ean t\u1eed trong th\u00e9p, cho ch\u00fang c\u00f3 nhi\u1ec1u kh\u00f4ng gian \u0111\u1ec3 di chuy\u1ec3n h\u01a1n khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng l\u00ean – l\u00e0m gi\u1ea3m t\u1ed1c \u0111\u1ed9 gi\u00e3n n\u1edf theo nhi\u1ec7t \u0111\u1ed9 c\u1ee7a th\u00e9p m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. C\u00f3 m\u1ed9t gi\u1edbi h\u1ea1n v\u1ec1 m\u1ee9c \u0111\u1ed9 k\u00e9o gi\u00e3n tr\u01b0\u1edbc c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n, v\u00ec n\u00f3 l\u00e0m gi\u1ea3m<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 10 – Arkady Leokum \u0110\u00fang v\u1eady, \u0111\u1eb7c bi\u1ec7t trong th\u1eddi ti\u1ebft n\u00f3ng v\u00e0 \u1ea9m. S\u00f3ng \u00e2m \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh m\u1ed7i khi c\u00f3 m\u1ed9t c\u1ed9t kh\u00f4ng kh\u00ed – ho\u1eb7c b\u1ea5t k\u00ec th\u1ee9 g\u00ec kh\u00e1c – b\u1ecb n\u00e9n \u00e9p v\u00e0 k\u00e9o c\u0103ng lu\u00e2n phi\u00ean v\u1edbi […]<\/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],"tags":[],"class_list":["post-16182","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/16182","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=16182"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/16182\/revisions"}],"predecessor-version":[{"id":16183,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/16182\/revisions\/16183"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=16182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=16182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=16182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}