\u0110\u1ed9ng \u0111\u1ea5t l\u00e0 m\u1ed9t tai ho\u1ea1 thi\u00ean nhi\u00ean nghi\u00eam tr\u1ecdng nh\u1ea5t \u0111\u1ed1i v\u1edbi c\u00e1c th\u00e0nh ph\u1ed1 hi\u1ec7n \u0111\u1ea1i, nh\u00e0 cao t\u1ea7ng chi ch\u00edt, l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 cho c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac c\u00f3 \u0111\u01b0\u1ee3c t\u00ednh n\u0103ng ch\u1ed1ng \u0111\u1ed9ng \u0111\u1ea5t t\u1ed1t l\u00e0 m\u1ed9t b\u00e0i to\u00e1n kh\u00f3 trong ki\u1ebfn tr\u00fac hi\u1ec7n \u0111\u1ea1i. Nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, c\u00e1c nh\u00e0 khoa h\u1ecdc ki\u1ebfn tr\u00fac \u1edf n\u01b0\u1edbc ngo\u00e0i \u0111\u00e3 d\u00f9ng m\u1ed9t lo\u1ea1i “ki\u1ebfn tr\u00fac c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i”, hi\u1ec7u qu\u1ea3 ph\u00f2ng ch\u1ed1ng \u0111\u1ed9ng \u0111\u1ea5t c\u1ee7a n\u00f3 r\u1ea5t t\u1ed1t, tri\u1ec3n v\u1ecdng \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i.<\/p>\n\n\n\n
Nh\u1eadt B\u1ea3n l\u00e0 m\u1ed9t n\u01b0\u1edbc c\u00f3 nhi\u1ec1u \u0111\u1ed9ng \u0111\u1ea5t. \u1ede T\u00f4ky\u00f4, h\u1ecd \u0111\u00e3 x\u00e2y 12 to\u00e0 nh\u00e0 cao to ph\u00f2ng ch\u1ed1ng \u0111\u1ed9ng \u0111\u1ea5t c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i. K\u1ebft c\u1ea5u ki\u1ebfn tr\u00fac c\u1ee7a c\u00f4ng tr\u00ecnh m\u1edbi n\u00e0y kh\u00f4ng x\u00e2y tr\u1ef1c ti\u1ebfp l\u00ean tr\u00ean m\u1eb7t \u0111\u1ea5t, m\u00e0 \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean m\u1ed9t kh\u1ed1i c\u00e1ch ly c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i, ch\u1ecbu n\u00e9n \u0111\u1eb7c bi\u1ec7t, kh\u1ed1i c\u00e1ch ly do cao su ph\u00e2n t\u1ea7ng, t\u1ea5m th\u00e9p c\u1ee9ng v\u00e0 b\u1ed9 dao \u0111\u1ed9ng gi\u1ea3m d\u1ea7n h\u1ee3p th\u00e0nh. B\u1ed9 dao \u0111\u1ed9ng gi\u1ea3m d\u1ea7n do c\u00e1c t\u1ea5m th\u00e9p d\u1ea1ng xo\u1eafn \u1ed1c h\u1ee3p th\u00e0nh c\u00f3 th\u1ec3 l\u00e0m d\u1ecbu \u0111i nhi\u1ec1u t\u00e1c d\u1ee5ng rung \u0111\u1ed9ng theo chi\u1ec1u th\u1eb3ng \u0111\u1ee9ng c\u1ee7a to\u00e0 nh\u00e0, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 l\u1eafp th\u00eam “ch\u00e2n l\u00f2 xo” cho to\u00e0 nh\u00e0 v\u1eady, hi\u1ec7u qu\u1ea3 gi\u1ea3m ch\u1ea5n \u0111\u1ed9ng c\u1ee7a n\u00f3 \u0111\u1ea1t \u0111\u1ebfn 60% -75%. Trong tr\u1eadn \u0111\u1ed9ng \u0111\u1ea5t 6,6 \u0111\u1ed9 Richter \u1edf v\u00f9ng T\u00f4ky\u00f4, c\u00e1c ki\u1ebfn tr\u00fac c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i \u0111\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1eed th\u00e1ch, hi\u1ec7u qu\u1ea3 l\u00e0m gi\u1ea3m ch\u1ea5n \u0111\u1ed9ng r\u1ea5t r\u00f5 r\u1ec7t. C\u00e1c nh\u00e0 khoa h\u1ecdc Nh\u1eadt B\u1ea3n l\u1ea1i \u0111\u1ed9ng n\u00e3o r\u1ea5t nhi\u1ec1u v\u1ec1 m\u1eb7t \u1ee9ng d\u1ee5ng thi\u1ebft k\u1ebf<\/a> ki\u1ec3u “l\u00f2 xo” cho c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac, khi\u1ebfn cho ch\u1ee7 th\u1ec3 c\u1ee7a c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac t\u00e1ch kh\u1ecfi m\u00f3ng. Khi x\u1ea3y ra \u0111\u1ed9ng \u0111\u1ea5t, d\u00f9 m\u00f3ng l\u1eafc l\u01b0 nh\u01b0 th\u1ebf n\u00e0o, l\u00f2 xo m\u1ea1nh \u0111\u1ec1u c\u00f3 th\u1ec3 h\u1ea5p thu ph\u1ea7n l\u1edbn l\u1ef1c xung k\u00edch c\u1ee7a \u0111\u1ed9ng \u0111\u1ea5t, b\u1ea3o \u0111\u1ea3m c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac \u0111\u01b0\u1ee3c \u1ed5n \u0111\u1ecbnh. B\u00ecnh th\u01b0\u1eddng m\u1ed9t s\u1ed1 \u00f4 t\u00f4 lo\u1ea1i l\u1edbn khi ch\u1ea1y th\u01b0\u1eddng l\u00e0m rung \u0111\u1ed9ng m\u1eb7t \u0111\u1ea5t, nh\u01b0ng khi ch\u1ea1y qua v\u00f9ng \u0111\u1ec7m c\u1ee7a “l\u00f2 xo” ki\u1ebfn tr\u00fac th\u00ec ti\u00eau tan ho\u00e0n to\u00e0n, c\u01b0 d\u00e2n s\u1ed1ng trong c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i kh\u00f4ng c\u00f3 m\u1ed9t ch\u00fat c\u1ea3m gi\u00e1c n\u00e0o v\u1ec1 m\u1eb7t \u0111\u1ea5t b\u1ecb rung.<\/p>\n\n\n\n Thung l\u0169ng Silicon n\u1ed5i ti\u1ebfng \u1edf bang California c\u1ee7a M\u1ef9 c\u0169ng x\u00e2y m\u1ed9t to\u00e0 nh\u00e0 m\u00e1y \u0111i\u1ec7n t\u1eed \u0111\u1eb7c bi\u1ec7t. To\u00e0 nh\u00e0 cao to n\u00e0y \u1edf d\u01b0\u1edbi m\u1ed7i c\u00e2y c\u1ed9t v\u00e0 t\u01b0\u1eddng ch\u1ecbu l\u1ef1c \u0111\u1ec1u c\u00f3 \u0111\u1eb7t r\u1ea5t nhi\u1ec1u vi\u00ean bi th\u00e9p kh\u00f4ng g\u1ec9, d\u00f9ng nh\u1eefng vi\u00ean bi n\u00e0y \u0111\u1ec3 ch\u1ed1ng \u0111\u1ee1 tr\u1ecdng l\u01b0\u1ee3ng to\u00e0n b\u1ed9 to\u00e0 nh\u00e0, c\u00f2n c\u00e1c d\u1ea7m th\u00e9p \u0111an ch\u00e9o d\u1ecdc ngang th\u00ec k\u1ebft c\u1ea5u v\u1edbi m\u00f3ng m\u1ed9t c\u00e1ch v\u1eefng ch\u1eafc. Khi x\u1ea3y ra \u0111\u1ed9ng \u0111\u1ea5t, c\u00e1c d\u1ea7m th\u00e9p c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i c\u00f3 th\u1ec3 co gi\u00e3n ch\u00fat \u00edt, g\u00e2y t\u00e1c d\u1ee5ng ph\u00f2ng ch\u1ed1ng \u0111\u1ed9ng \u0111\u1ea5t c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i; c\u00f2n to\u00e0n b\u1ed9 to\u00e0 nh\u00e0 th\u00ec c\u00f3 th\u1ec3 tr\u01b0\u1ee3t nh\u1eb9 v\u00e0 c\u00e2n b\u1eb1ng ra b\u1ed1n ph\u00eda tr\u01b0\u1edbc sau tr\u00e1i ph\u1ea3i \u1edf tr\u00ean c\u00e1c vi\u00ean bi d\u00e0y \u0111\u1eb7c \u0111\u00f3, do \u0111\u00f3 l\u00e0m y\u1ebfu \u0111i r\u1ea5t nhi\u1ec1u s\u1ee9c ph\u00e1 ho\u1ea1i c\u1ee7a s\u00f3ng \u0111\u1ecba ch\u1ea5n.<\/p>\n\n\n\n \u0110i \u0111\u00f4i v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a khoa h\u1ecdc k\u1ef9 thu\u1eadt v\u1eadt li\u1ec7u v\u00e0 c\u00e1c k\u1ef9 thu\u1eadt t\u00e2n ti\u1ebfn m\u1edbi m\u1ebb kh\u00e1c, c\u00e1c ki\u1ebfn tr\u00fac ch\u1ed1ng \u0111\u1ed9ng \u0111\u1ea5t ki\u1ec3u m\u1edbi ng\u00e0y c\u00e0ng nhi\u1ec1u, \u0111\u1ec3 ch\u1ed1ng l\u1ea1i tai ho\u1ea1 \u0111\u1ed9ng \u0111\u1ea5t, b\u1ea3o \u0111\u1ea3m cho m\u1ecdi ng\u01b0\u1eddi an c\u01b0 l\u1ea1c nghi\u1ec7p.<\/p>\n\n\n\n T\u1eeb kh\u00f3a: \u0110\u1ed9ng \u0111\u1ea5t; Ki\u1ebfn tr\u00fac \u0111\u00e0n h\u1ed3i.<\/p>\n","protected":false},"excerpt":{"rendered":" \u0110\u1ed9ng \u0111\u1ea5t l\u00e0 m\u1ed9t tai ho\u1ea1 thi\u00ean nhi\u00ean nghi\u00eam tr\u1ecdng nh\u1ea5t \u0111\u1ed1i v\u1edbi c\u00e1c th\u00e0nh ph\u1ed1 hi\u1ec7n \u0111\u1ea1i, nh\u00e0 cao t\u1ea7ng chi ch\u00edt, l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 cho c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac c\u00f3 \u0111\u01b0\u1ee3c t\u00ednh n\u0103ng ch\u1ed1ng \u0111\u1ed9ng \u0111\u1ea5t t\u1ed1t l\u00e0 m\u1ed9t b\u00e0i to\u00e1n kh\u00f3 trong ki\u1ebfn tr\u00fac hi\u1ec7n \u0111\u1ea1i. Nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, […]<\/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-9043","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\/9043","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=9043"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9043\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9043"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9043"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}