C\u00e1c v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng t\u01b0\u1eddng ngo\u00e0i ph\u1ea7n l\u1edbn l\u00e0 b\u1eb1ng \u0111\u00e1 ho\u1eb7c b\u1eb1ng g\u1ea1ch, hi\u1ec7n nay c\u0169ng th\u01b0\u1eddng d\u00f9ng g\u1ea1ch b\u00ea t\u00f4ng ho\u1eb7c c\u00e1c lo\u1ea1i g\u1ea1ch r\u1ed7ng, ch\u00fang kh\u00f4ng nh\u1eefng c\u00f3 t\u00e1c d\u1ee5ng c\u00e1ch ly, m\u00e0 c\u00f2n ch\u1ecbu t\u1ea3i tr\u1ecdng c\u1ee7a m\u00e1i nh\u00e0 v\u00e0 s\u00e0n g\u00e1c. Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a t\u01b0\u1eddng g\u1ea1ch r\u1ea5t l\u1edbn, m\u1ed9t t\u01b0\u1eddng d\u00e0y 24 cm (trong x\u00e2y d\u1ef1ng g\u1ecdi l\u00e0 t\u01b0\u1eddng m\u1ed9t vi\u00ean g\u1ea1ch, b\u1edfi v\u00ec chi\u1ec1u d\u00e0i m\u1ed9t vi\u00ean g\u1ea1ch l\u00e0 24 cm) n\u1ebfu cao 3 m, r\u1ed9ng 1 m th\u00ec tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 1,5 t\u1ea5n, t\u1ee9c l\u00e0 r\u1ea5t n\u1eb7ng, m\u00e0 t\u1ed1c \u0111\u1ed9 thi c\u00f4ng c\u0169ng ch\u1eadm.<\/p>\n\n\n\n
\u1ede c\u00e1c ki\u1ebfn tr\u00fac hi\u1ec7n \u0111\u1ea1i, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c ki\u1ebfn tr\u00fac cao t\u1ea7ng ho\u1eb7c ki\u1ebfn tr\u00fac c\u00f4ng c\u1ed9ng c\u1ee1 l\u1edbn, t\u01b0\u1eddng ngo\u00e0i ph\u1ea7n l\u1edbn kh\u00f4ng ch\u1ecbu t\u1ea3i tr\u1ecdng, b\u1edfi v\u00ec c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a g\u1ea1ch c\u0103n b\u1ea3n kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 ch\u1ecbu tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a to\u00e0 nh\u00e0 m\u1ea5y ch\u1ee5c t\u1ea7ng. V\u00ec v\u1eady, c\u00e1c b\u1ee9c t\u01b0\u1eddng ngo\u00e0i ch\u1ec9 c\u00f3 t\u00e1c d\u1ee5ng b\u1ea3o v\u1ec7 v\u00e0 c\u00e1ch ly, th\u01b0\u1eddng d\u00f9ng v\u1eadt li\u1ec7u nh\u1eb9, do \u0111\u00f3 \u0111\u00e3 gi\u1ea3m r\u1ea5t nhi\u1ec1u tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a to\u00e0n b\u1ed9 ki\u1ebfn tr\u00fac. Lo\u1ea1i t\u01b0\u1eddng ngo\u00e0i n\u00e0y gi\u1ed1ng nh\u01b0 c\u00e1i m\u00e0n s\u00e2n kh\u1ea5u, v\u1eeba m\u1ecfng, v\u1eeba nh\u1eb9, cho n\u00ean \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 “t\u01b0\u1eddng bao”, n\u1ebfu v\u1eadt li\u1ec7u l\u00e0m t\u01b0\u1eddng bao l\u00e0 k\u00ednh th\u00ec g\u1ecdi l\u00e0 “t\u01b0\u1eddng k\u00ednh”.<\/p>\n\n\n\n
T\u01b0\u1eddng k\u00ednh \u0111\u1ea7u ti\u00ean ch\u1ec9 d\u00f9ng c\u1ee5c b\u1ed9 trong m\u1ed9t ki\u1ebfn tr\u00fac. N\u0103m 1910, n\u01b0\u1edbc \u0110\u1ee9c l\u1ea7n \u0111\u1ea7u ti\u00ean d\u00f9ng t\u01b0\u1eddng k\u00ednh v\u1edbi di\u1ec7n t\u00edch l\u1edbn \u1edf g\u00f3c qu\u00e0nh c\u1ee7a nh\u00e0 x\u01b0\u1edfng c\u00f4ng nghi\u1ec7p, \u0111\u01b0\u1ee3c coi l\u00e0 th\u1ec3 hi\u1ec7n phong c\u00e1ch hi\u1ec7n \u0111\u1ea1i. Nh\u01b0ng t\u01b0\u1eddng k\u00ednh th\u1ebf h\u1ec7 th\u1ee9 nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00fac \u0111\u00f3 l\u00e0 k\u00ednh th\u00f4ng th\u01b0\u1eddng, t\u00ednh n\u0103ng c\u00e1ch nhi\u1ec7t k\u00e9m, m\u00f9a h\u00e8 trong ph\u00f2ng r\u1ea5t n\u00f3ng, m\u00f9a \u0111\u00f4ng th\u00ec l\u1ea1nh gi\u00e1.<\/p>\n\n\n\n
N\u0103m 1952 to\u00e0 nh\u00e0 Liwoa cao 22 t\u1ea7ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u1edf New York n\u01b0\u1edbc M\u1ef9, l\u1ea7n \u0111\u1ea7u ti\u00ean d\u00f9ng t\u01b0\u1eddng k\u00ednh tr\u00ean to\u00e0n b\u1ed9 ki\u1ebfn tr\u00fac. K\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00fac \u0111\u00f3 c\u00f3 tr\u1ed9n th\u00eam v\u1eadt li\u1ec7u kho\u00e1ng ch\u1ea5t, kh\u00f4ng nh\u1eefng c\u00f3 nhi\u1ec1u m\u00e0u s\u1eafc, m\u00e0 c\u00f2n c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n m\u1ed9t ph\u1ea7n b\u1ee9c x\u1ea1 c\u1ee7a \u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi, m\u00f9a h\u00e8 th\u00ec ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi \u1edf b\u00ean ngo\u00e0i nh\u00e0, m\u00f9a \u0111\u00f4ng th\u00ec ph\u1ea3n x\u1ea1 nhi\u1ec7t l\u01b0\u1ee3ng \u1edf trong nh\u00e0 kh\u00f4ng cho tho\u00e1t ra ngo\u00e0i, c\u00f3 hi\u1ec7u qu\u1ea3 gi\u1eef nhi\u1ec7t. \u0110\u00f3 l\u00e0 t\u01b0\u1eddng k\u00ednh th\u1ebf h\u1ec7 th\u1ee9 hai.<\/p>\n\n\n\n
N\u0103m 1962, ph\u00f2ng th\u1ef1c nghi\u1ec7m \u0111i\u1ec7n tho\u1ea1i Belle c\u1ee7a M\u1ef9 \u0111\u00e3 x\u00e2y d\u1ef1ng \u1edf b\u00ean h\u1ed3 m\u1ed9t ki\u1ebfn tr\u00fac cao t\u1ea7ng r\u1ea5t r\u1ed9ng, h\u1ecd \u0111\u00e3 d\u00f9ng “k\u00ednh m\u1eb7t g\u01b0\u01a1ng” l\u00e0m t\u01b0\u1eddng bao, c\u00f3 hi\u1ec7u qu\u1ea3 c\u1ef1c k\u1ef3 t\u1ed1t. To\u00e0n b\u1ed9 t\u01b0\u1eddng ngo\u00e0i c\u1ee7a ki\u1ebfn tr\u00fac gi\u1ed1ng nh\u01b0 m\u1ed9t m\u00e0n b\u1ea1c r\u1ed9ng “si\u00eau c\u1ea5p” \u0111\u1ee9ng s\u1eebng s\u1eefng \u1edf b\u00ean h\u1ed3, ph\u1ea3n chi\u1ebfu c\u1ea3nh s\u1eafc lung linh \u0111\u1eb9p \u0111\u1ebd c\u1ee7a m\u1eb7t h\u1ed3.<\/p>\n\n\n\n
K\u00ednh m\u1eb7t g\u01b0\u01a1ng \u0111\u00e3 d\u00f9ng c\u00e1c bi\u1ec7n ph\u00e1p nhi\u1ec7t luy\u1ec7n tr\u1ea7m t\u00edch ch\u00e2n kh\u00f4ng v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ho\u00e1 h\u1ecdc, khi\u1ebfn cho b\u1ec1 m\u1eb7t k\u00ednh h\u00ecnh th\u00e0nh m\u1ed9t m\u00e0ng m\u1ecfng kim lo\u1ea1i, n\u00f3 c\u00f3 nhi\u1ec1u lo\u1ea1i m\u00e0u s\u1eafc c\u1ee7a v\u00e0ng, b\u1ea1c, \u0111\u1ed3ng c\u1ed5, xanh lam v.v. H\u01a1n n\u1eefa c\u00f2n ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 b\u1ee9c x\u1ea1 nhi\u1ec7t nh\u01b0 m\u1ed9t t\u1ea5m g\u01b0\u01a1ng v\u1eady, n\u00ean c\u00f3 t\u00e1c d\u1ee5ng c\u00e1ch nhi\u1ec7t r\u1ea5t t\u1ed1t, k\u00ednh m\u1eb7t g\u01b0\u01a1ng c\u00f3 m\u00e0u s\u1eafc kh\u00e1c nhau, chi\u1ec1u d\u00e0i v\u00e0 s\u1ed1 l\u1edbp kh\u00e1c nhau th\u00ec m\u1ee9c \u0111\u1ed9 \u00e1nh s\u00e1ng xuy\u00ean qua c\u0169ng kh\u00f4ng gi\u1ed1ng nhau. V\u00ed d\u1ee5, k\u00ednh th\u00f4ng th\u01b0\u1eddng d\u00e0y 6 mm c\u00f3 th\u1ec3 cho 78% \u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi xuy\u00ean qua, nh\u01b0ng k\u00ednh m\u1eb7t g\u01b0\u01a1ng c\u00f3 chi\u1ec1u d\u00e0y t\u01b0\u01a1ng t\u1ef1 ch\u1ec9 cho kho\u1ea3ng 26%, k\u00ednh m\u1eb7t g\u01b0\u01a1ng hai l\u1edbp th\u00ec ch\u1ec9 cho 9%-20% nhi\u1ec7t l\u01b0\u1ee3ng xuy\u00ean qua. Nh\u01b0 v\u1eady v\u1ec1 m\u00f9a h\u00e8 c\u00f3 th\u1ec3 ph\u1ea3n x\u1ea1 ph\u1ea7n l\u1edbn nhi\u1ec7t l\u01b0\u1ee3ng \u1edf b\u00ean ngo\u00e0i nh\u00e0, v\u1ec1 m\u00f9a \u0111\u00f4ng c\u00f3 th\u1ec3 ph\u1ea3n x\u1ea1 nhi\u1ec7t l\u01b0\u1ee3ng \u1edf trong ph\u00f2ng \u0111\u1ec3 duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, do \u0111\u00f3 \u0111\u00e3 ti\u1ebft ki\u1ec7m ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng r\u1ea5t l\u1edbn. B\u1edfi v\u1eady \u0111\u1ed9 d\u00e0y c\u1ee7a k\u00ednh tuy ch\u1ec9 b\u1eb1ng m\u1ed9t ph\u1ea7n m\u1ea5y m\u01b0\u01a1i c\u1ee7a \u0111\u1ed9 d\u00e0y t\u01b0\u1eddng g\u1ea1ch, nh\u01b0ng t\u00ednh n\u0103ng gi\u1eef nhi\u1ec7t c\u00e1ch nhi\u1ec7t l\u1ea1i h\u01a1n h\u1eb3n t\u01b0\u1eddng g\u1ea1ch.<\/p>\n\n\n\n
T\u1eeb kh\u00f3a: Ki\u1ebfn tr\u00fac t\u01b0\u1eddng k\u00ednh.<\/p>\n","protected":false},"excerpt":{"rendered":"
C\u00e1c v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng t\u01b0\u1eddng ngo\u00e0i ph\u1ea7n l\u1edbn l\u00e0 b\u1eb1ng \u0111\u00e1 ho\u1eb7c b\u1eb1ng g\u1ea1ch, hi\u1ec7n nay c\u0169ng th\u01b0\u1eddng d\u00f9ng g\u1ea1ch b\u00ea t\u00f4ng ho\u1eb7c c\u00e1c lo\u1ea1i g\u1ea1ch r\u1ed7ng, ch\u00fang kh\u00f4ng nh\u1eefng c\u00f3 t\u00e1c d\u1ee5ng c\u00e1ch ly, m\u00e0 c\u00f2n ch\u1ecbu t\u1ea3i tr\u1ecdng c\u1ee7a m\u00e1i nh\u00e0 v\u00e0 s\u00e0n g\u00e1c. Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a t\u01b0\u1eddng g\u1ea1ch r\u1ea5t l\u1edbn, m\u1ed9t […]<\/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-8969","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\/8969","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=8969"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8969\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8969"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8969"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}