V\u00e0o l\u00fac nh\u00e1 nhem t\u1ed1i m\u00f9a h\u00e8, d\u01b0\u1edbi hi\u00ean nh\u00e0 ho\u1eb7c trong v\u01b0\u1eddn, ch\u00fang ta th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y d\u01a1i bay th\u1ea5p, v\u1eeba bay v\u1eeba \u0111\u1edbp c\u00f4n tr\u00f9ng.<\/p>\n\n\n\n
D\u01a1i c\u00f3 th\u1ec3 b\u1eaft m\u1ed3i v\u00e0o n\u1eeda \u0111\u00eam, l\u1ebd n\u00e0o ch\u00fang c\u00f3 m\u1ed9t \u0111\u00f4i m\u1eaft nh\u00ecn th\u1ea5u trong \u0111\u00eam r\u00f5 \u0111\u1ebfn ch\u00e2n t\u01a1 k\u1ebd t\u00f3c hay sao?<\/p>\n\n\n\n
Kh\u00f4ng ph\u1ea3i. Ng\u01b0\u1eddi ta s\u1edbm \u0111\u00e3 ph\u00e1t hi\u1ec7n ra th\u1ecb l\u1ef1c c\u1ee7a d\u01a1i r\u1ea5t k\u00e9m. V\u1eady th\u00ec, r\u1ed1t cu\u1ed9c d\u01a1i c\u00f3 t\u00e0i kh\u00e9o l\u00e9o g\u00ec \u0111\u1ec3 c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c ph\u01b0\u01a1ng h\u01b0\u1edbng, b\u1eaft m\u1ed3i trong \u0111\u00eam t\u1ed1i \u0111en nh\u01b0 m\u1ef1c nh\u1ec9?<\/p>\n\n\n\n
Bao nhi\u00eau n\u0103m nay, \u0111\u00e2y v\u1eabn l\u00e0 m\u1ed9t c\u00e2u \u0111\u1ed1 m\u00e0 c\u00e1c nh\u00e0 khoa h\u1ecdc c\u1ea3m th\u1ea5y r\u1ea5t l\u00ed th\u00fa.<\/p>\n\n\n\n
H\u01a1n 260 n\u0103m v\u1ec1 tr\u01b0\u1edbc, nh\u00e0 khoa h\u1ecdc Sphanlantrani ng\u01b0\u1eddi Italia \u0111\u1ea7u ti\u00ean \u0111\u00e3 nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m n\u00e0y c\u1ee7a d\u01a1i.<\/p>\n\n\n\n
\u00d4ng l\u00e0m m\u00f9 m\u1ed9t m\u1eaft c\u1ee7a d\u01a1i, r\u1ed3i \u0111\u1eb7t n\u00f3 v\u00e0o trong m\u1ed9t gian ph\u00f2ng k\u00edn cao r\u1ed9ng, c\u00f3 \u0111an nhi\u1ec1u s\u1ee3i th\u00e9p. \u0110i\u1ec1u khi\u1ebfn ng\u01b0\u1eddi ta ng\u1ea1c nhi\u00ean l\u00e0 con d\u01a1i n\u00e0y v\u1eabn c\u00f3 th\u1ec3 nhanh nh\u1eb9n l\u00e1ch qua s\u1ee3i th\u00e9p, b\u1eaft \u0111\u01b0\u1ee3c c\u00f4n tr\u00f9ng m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c. “C\u00f3 l\u1ebd l\u00e0 kh\u1ee9u gi\u00e1c c\u1ee7a d\u01a1i \u0111ang ph\u00e1t huy t\u00e1c d\u1ee5ng” – Sphanlantrani ngh\u0129 nh\u01b0 v\u1eady.<\/p>\n\n\n\n
Ti\u1ebfp theo, \u00f4ng l\u1ea1i l\u00e0m h\u1ecfng ch\u1ee9c n\u0103ng kh\u1ee9u gi\u00e1c c\u1ee7a d\u01a1i, nh\u01b0ng d\u01a1i v\u1eabn bay \u0111\u01b0\u1ee3c r\u1ea5t t\u1ed1t nh\u01b0 th\u01b0\u1eddng, gi\u1ed1ng nh\u01b0 l\u00e0 ch\u1eb3ng c\u00f3 g\u00ec thay \u0111\u1ed5i v\u1eady. Sau \u0111\u00f3, \u00f4ng l\u1ea1i d\u00f9ng s\u01a1n b\u00f4i \u0111\u1ea7y l\u00ean m\u00ecnh d\u01a1i, k\u1ebft qu\u1ea3 v\u1eabn kh\u00f4ng \u1ea3nh h\u01b0\u1edfng g\u00ec \u0111\u1ebfn vi\u1ec7c bay b\u00ecnh th\u01b0\u1eddng c\u1ee7a n\u00f3. Ch\u1eb3ng l\u1ebd \u0111\u00e2y l\u00e0 th\u00ednh gi\u00e1c c\u1ee7a d\u01a1i \u0111ang ph\u00e1t huy t\u00e1c d\u1ee5ng hay sao? Sphanlantrani h\u1ebft s\u1ee9c t\u00ecm t\u00f2i suy ngh\u0129 v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n\n\n\n
Khi \u00f4ng n\u00fat ch\u1eb7t tai c\u1ee7a m\u1ed9t con d\u01a1i r\u1ed3i l\u1ea1i th\u1ea3 cho n\u00f3 bay, k\u1ebft qu\u1ea3 cho th\u1ea5y “kh\u1ea3 n\u0103ng bay c\u1ee7a d\u01a1i k\u00e9m h\u1eb3n”. N\u00f3 bay t\u00e1n lo\u1ea1n h\u1ebft ch\u1ed7 n\u00e0y \u0111\u1ebfn ch\u1ed7 kh\u00e1c, va \u0111\u1eadp kh\u1eafp n\u01a1i tr\u00ean v\u00e1ch, \u0111\u1ebfn c\u1ea3 c\u00f4n tr\u00f9ng nh\u1ecf c\u0169ng kh\u00f4ng b\u1eaft \u0111\u01b0\u1ee3c. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y \u00e2m thanh \u0111\u00e3 gi\u00fap cho d\u01a1i ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c ph\u01b0\u01a1ng h\u01b0\u1edbng v\u00e0 t\u00ecm ki\u1ebfm \u0111\u01b0\u1ee3c con m\u1ed3i.<\/p>\n\n\n\n
Song, r\u1ed1t cu\u1ed9c \u0111\u00e2y l\u00e0 lo\u1ea1i \u00e2m thanh g\u00ec, Sphanlantrani v\u1eabn ch\u01b0a nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c, c\u00e1c nh\u00e0 khoa h\u1ecdc sau n\u00e0y qua nghi\u00ean c\u1ee9u cu\u1ed1i c\u00f9ng \u0111\u00e3 v\u00e9n l\u00ean \u0111\u01b0\u1ee3c b\u1ee9c m\u00e0n b\u00ed m\u1eadt n\u00e0y.<\/p>\n\n\n\n
Ho\u00e1 ra, c\u1ed5 h\u1ecdng c\u1ee7a d\u01a1i c\u00f3 th\u1ec3 ph\u00e1t ra s\u00f3ng si\u00eau \u00e2m r\u1ea5t m\u1ea1nh. S\u00f3ng \u00e2m ph\u00e1t ra ngo\u00e0i th\u00f4ng qua mi\u1ec7ng v\u00e0 l\u1ed7 m\u0169i c\u1ee7a d\u01a1i. Khi g\u1eb7p ph\u1ea3i v\u1eadt th\u1ec3, s\u00f3ng si\u00eau \u00e2m li\u1ec1n ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i, tai c\u1ee7a d\u01a1i nghe \u0111\u01b0\u1ee3c \u00e2m thanh ph\u1ea3n h\u1ed3i, n\u00ean c\u00f3 th\u1ec3 ph\u00e1n \u0111o\u00e1n \u0111\u01b0\u1ee3c kho\u1ea3ng c\u00e1ch v\u00e0 k\u00edch c\u1ee1 to nh\u1ecf c\u1ee7a v\u1eadt th\u1ec3.<\/p>\n\n\n\n
C\u00e1c nh\u00e0 khoa h\u1ecdc g\u1ecdi ph\u01b0\u01a1ng th\u1ee9c c\u0103n c\u1ee9 v\u00e0o \u00e2m thanh ph\u1ea3n h\u1ed3i \u0111\u1ec3 t\u00ecm t\u00f2i v\u1eadt th\u1ec3 c\u1ee7a d\u01a1i l\u00e0 “h\u1ed3i thanh \u0111\u1ecbnh v\u1ecb” hay ra\u0111a d\u00f9ng s\u00f3ng \u00e2m.<\/p>\n\n\n\n
\u0110i\u1ec1u khi\u1ebfn cho m\u1ecdi ng\u01b0\u1eddi ng\u1ea1c nhi\u00ean l\u00e0 lo\u00e0i d\u01a1i trong m\u1ed9t gi\u00e2y c\u00f3 th\u1ec3 nh\u1eadn v\u00e0 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c 250 ch\u00f9m \u00e2m thanh ph\u1ea3n h\u1ed3i (m\u1ed9t l\u1ea7n \u0111i v\u1ec1 c\u1ee7a s\u00f3ng \u00e2m thanh \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 m\u1ed9t ch\u00f9m).<\/p>\n\n\n\n
Kh\u1ea3 n\u0103ng ph\u00e2n bi\u1ec7t c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb \u00e2m thanh ph\u1ea3n h\u1ed3i c\u1ee7a d\u01a1i r\u1ea5t cao. D\u01a1i c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t ch\u00ednh x\u00e1c t\u00edn hi\u1ec7u \u00e2m thanh ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i c\u1ee7a c\u00f4n tr\u00f9ng v\u00e0 t\u00edn hi\u1ec7u \u00e2m thanh ph\u1ea3n x\u1ea1 c\u1ee7a m\u1eb7t \u0111\u1ea5t, c\u00e2y c\u1ed1i, ph\u00e2n bi\u1ec7t r\u00f5 l\u00e0 th\u1ee9c \u0103n hay l\u00e0 ch\u01b0\u1edbng ng\u1ea1i v\u1eadt. Ngo\u00e0i ra, kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb \u00e2m thanh ph\u1ea3n h\u1ed3i c\u1ee7a d\u01a1i c\u0169ng r\u1ea5t t\u1ed1t. Cho d\u00f9 d\u01a1i b\u1ecb nhi\u1ec5u nh\u00e2n t\u1ea1o, t\u1ea1o \u00e2m nhi\u1ec5u m\u1ea1nh g\u1ea5p 100 l\u1ea7n so v\u1edbi s\u00f3ng si\u00eau \u00e2m c\u1ee7a d\u01a1i ph\u00e1t ra, th\u00ec n\u00f3 v\u1eabn c\u00f3 th\u1ec3 l\u00e0m vi\u1ec7c c\u00f3 hi\u1ec7u qu\u1ea3. Ch\u00ednh l\u00e0 nh\u1edd v\u00e0o b\u1ea3n l\u0129nh \u0111\u1ed9c \u0111\u00e1o n\u00e0y, khi\u1ebfn d\u01a1i c\u00f3 th\u1ec3 b\u1eaft c\u00f4n tr\u00f9ng trong \u0111\u00eam t\u1ed1i, c\u00f3 \u0111\u01b0\u1ee3c t\u00ednh nhanh nh\u1eb9n v\u00e0 t\u00ednh ch\u00ednh x\u00e1c \u0111\u00e1ng kinh ng\u1ea1c nh\u01b0 v\u1eady. Ch\u1eb3ng tr\u00e1ch c\u00f3 ng\u01b0\u1eddi g\u1ecdi d\u01a1i l\u00e0 “ra \u0111a s\u1ed1ng” \u0111\u1ea5y.<\/p>\n","protected":false},"excerpt":{"rendered":"
V\u00e0o l\u00fac nh\u00e1 nhem t\u1ed1i m\u00f9a h\u00e8, d\u01b0\u1edbi hi\u00ean nh\u00e0 ho\u1eb7c trong v\u01b0\u1eddn, ch\u00fang ta th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y d\u01a1i bay th\u1ea5p, v\u1eeba bay v\u1eeba \u0111\u1edbp c\u00f4n tr\u00f9ng. D\u01a1i c\u00f3 th\u1ec3 b\u1eaft m\u1ed3i v\u00e0o n\u1eeda \u0111\u00eam, l\u1ebd n\u00e0o ch\u00fang c\u00f3 m\u1ed9t \u0111\u00f4i m\u1eaft nh\u00ecn th\u1ea5u trong \u0111\u00eam r\u00f5 \u0111\u1ebfn ch\u00e2n t\u01a1 k\u1ebd t\u00f3c […]<\/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":[15,10],"tags":[],"class_list":["post-8553","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-sinh-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8553","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=8553"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8553\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}