Trong nhi\u1ec1u th\u00e0nh ph\u1ed1 \u1edf c\u00e1c n\u01a1i tr\u00ean th\u1ebf gi\u1edbi, nh\u1ea5t l\u00e0 hai b\u00ean c\u00e1c \u0111\u01b0\u1eddng ph\u1ed1 ng\u00f5 h\u1ebbm c\u1ee7a c\u00e1c n\u01b0\u1edbc \u00c2u M\u1ef9, ng\u01b0\u1eddi ta th\u01b0\u1eddng th\u1ea5y m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng thi\u1ebfu v\u0103n minh, \u0111\u00f3 l\u00e0 m\u1eb7t t\u01b0\u1eddng c\u00e1c ki\u1ebfn tr\u00fac c\u00f4ng c\u1ed9ng, th\u1eadm ch\u00ed tr\u00ean c\u00e1c di t\u00edch c\u1ed5 v\u00e0 c\u00e1c b\u1ee9c t\u01b0\u1eddng, c\u00f3 r\u1ea5t nhi\u1ec1u tranh v\u1ebd b\u1eeba b\u00e3i \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u1ef9 quan c\u1ee7a th\u00e0nh ph\u1ed1.<\/p>\n\n\n\n
V\u00ec nh\u1eefng tranh v\u1ebd \u1ea5y th\u01b0\u1eddng d\u00f9ng s\u01a1n ho\u1eb7c thu\u1ed1c m\u00e0u c\u00f3 pha m\u00e0u r\u1ed3i v\u1ebd l\u00ean, l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea9y s\u1ea1ch ch\u00fang, th\u1ef1c t\u1ebf l\u00e0 m\u1ed9t vi\u1ec7c h\u1ebft s\u1ee9c \u0111au \u0111\u1ea7u.<\/p>\n\n\n\n
Tr\u01b0\u1edbc \u0111\u00e2y kh\u00f4ng l\u00e2u, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 ph\u00e1t minh ra m\u1ed9t lo\u1ea1i m\u00e1y laze mini \u0111\u1ec3 tr\u1ed5 h\u1ebft t\u00e0i ngh\u1ec7 v\u1ec1 m\u1eb7t “l\u00e0m \u0111\u1eb9p” c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac. Lo\u1ea1i m\u00e1y laze n\u00e0y m\u1ed9t gi\u1edd c\u00f3 th\u1ec3 t\u1ea9y s\u1ea1ch v\u1ebft b\u00f4i v\u1ebd tr\u00ean t\u01b0\u1eddng trong ph\u1ea1m vi d\u00e0i 180 m, r\u1ed9ng 1,5 m. D\u00f9 l\u00e0 lo\u1ea1i thu\u1ed1c m\u00e0u th\u00f4ng th\u01b0\u1eddng, ch\u1ec9 c\u1ea7n ph\u1ebft l\u00ean b\u1ec1 m\u1eb7t xi m\u0103ng tr\u01a1n b\u00f3ng, tr\u00ean m\u1eb7t t\u01b0\u1eddng b\u1eb1ng \u0111\u00e1 hoa b\u1ec1 m\u1eb7t d\u00e1n b\u1eb1ng ch\u1ea5t d\u1ebbo, tia laze c\u1ee7a m\u00e1y laze \u0111i \u0111\u1ebfn \u0111\u00e2u, c\u00e1c v\u1ebft b\u1ea9n tr\u00ean b\u1ec1 m\u1eb7t ki\u1ebfn tr\u00fac \u0111\u1ec1u s\u1ea1ch bong, kh\u00f4ng \u0111\u1ec3 l\u1ea1i m\u1ed9t d\u1ea5u v\u1ebft g\u00ec.<\/p>\n\n\n\n
V\u1eady th\u00ec t\u1ea1i sao m\u00e1y laze l\u1ea1i c\u00f3 th\u1ec3 “l\u00e0m \u0111\u1eb9p” cho c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac.<\/p>\n\n\n\n
C\u00f3 ng\u01b0\u1eddi cho r\u1eb1ng \u0111i\u1ec1u n\u00e0y c\u0169ng g\u1ea7n gi\u1ed1ng nh\u01b0 nguy\u00ean l\u00fd d\u00f9ng m\u00e1y laze \u0111\u1ec3 t\u1ea9y n\u1ed1t ru\u1ed3i tr\u00ean m\u1eb7t, th\u1ef1c ra th\u00ec hai vi\u1ec7c \u1ea5y ho\u00e0n to\u00e0n kh\u00e1c nhau. M\u00e1y laze d\u00f9ng \u0111\u1ec3 t\u1ea9y v\u1ebft b\u1ea9n tr\u00ean ki\u1ebfn tr\u00fac kh\u00f4ng c\u1ea7n d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p nung \u0111\u1ed1t, m\u00e0 d\u1ef1a v\u00e0o s\u00f3ng \u00e1nh s\u00e1ng v\u00e0 s\u00f3ng \u00e2m thanh \u0111\u1ec3 l\u00e0m vi\u1ec7c. S\u00f3ng \u00e1nh s\u00e1ng m\u00e0u xanh 1000 Hz do n\u00f3 ph\u00e1t ra, khi chi\u1ebfu v\u00e0o b\u1ec1 m\u1eb7t ki\u1ebfn tr\u00fac c\u1ea7n t\u1ea9y s\u1ea1ch, m\u1ed9t ph\u1ea7n n\u0103ng l\u01b0\u1ee3ng trong \u0111\u00f3 chuy\u1ec3n ho\u00e1 th\u00e0nh s\u00f3ng \u00e2m thanh. Khi \u00e2m thanh ti\u1ebfp x\u00fac v\u00e0o b\u1ec1 m\u1eb7t c\u1ee9ng r\u1eafn c\u1ee7a v\u1eadt ki\u1ebfn tr\u00fac th\u00ec s\u1ebd b\u1ecb ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i, b\u1ed9 ph\u1eadn s\u00f3ng \u00e2m thanh ph\u1ea3n x\u1ea1 l\u1ea1i \u0111\u00f3 c\u00f9ng v\u1edbi s\u00f3ng \u00e2m thanh do s\u00f3ng \u00e1nh s\u00e1ng c\u1ee7a m\u00e1y laze chuy\u1ec3n ho\u00e1 th\u00e0nh, s\u1ebd va ch\u1ea1m v\u00e0o nh\u1eefng v\u1ebft b\u1ea9n b\u00e1m v\u00e0o b\u1ec1 m\u1eb7t v\u1eadt ki\u1ebfn tr\u00fac, v\u00e0 d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ee5 “n\u1ed5” v\u1edbi s\u1ee9c m\u1ea1nh c\u1ef1c nh\u1ecf, do \u0111\u00f3 l\u00e0m cho v\u1ebft b\u1ea9n b\u1ecb tr\u00f3c kh\u1ecfi b\u1ec1 m\u1eb7t v\u1eadt ki\u1ebfn tr\u00fac, \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c \u0111\u00edch l\u00e0m s\u1ea1ch v\u1eadt ki\u1ebfn tr\u00fac.<\/p>\n\n\n\n
T\u1eeb kh\u00f3a: L\u00e0m s\u1ea1ch b\u1eb1ng tia laze.<\/p>\n","protected":false},"excerpt":{"rendered":"
Trong nhi\u1ec1u th\u00e0nh ph\u1ed1 \u1edf c\u00e1c n\u01a1i tr\u00ean th\u1ebf gi\u1edbi, nh\u1ea5t l\u00e0 hai b\u00ean c\u00e1c \u0111\u01b0\u1eddng ph\u1ed1 ng\u00f5 h\u1ebbm c\u1ee7a c\u00e1c n\u01b0\u1edbc \u00c2u M\u1ef9, ng\u01b0\u1eddi ta th\u01b0\u1eddng th\u1ea5y m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng thi\u1ebfu v\u0103n minh, \u0111\u00f3 l\u00e0 m\u1eb7t t\u01b0\u1eddng c\u00e1c ki\u1ebfn tr\u00fac c\u00f4ng c\u1ed9ng, th\u1eadm ch\u00ed tr\u00ean c\u00e1c di t\u00edch c\u1ed5 v\u00e0 c\u00e1c b\u1ee9c t\u01b0\u1eddng, c\u00f3 […]<\/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-9059","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\/9059","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=9059"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9059\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9059"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9059"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9059"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}