C\u00e1c b\u1ea1n nh\u1ecf \u0111\u1ec1u th\u00edch th\u1ed5i b\u00f3ng bay. B\u00f3ng th\u1ed5i to qu\u00e1, n\u00f3 s\u1ebd “b\u00f9m” m\u1ed9t ti\u1ebfng r\u1ed3i v\u1ee1 ra. V\u00ec sao b\u00f3ng khi b\u1ecb th\u1ed5i v\u1ee1 l\u1ea1i c\u00f3 ti\u1ebfng “b\u00f9m” nh\u1ec9?<\/p>\n\n\n\n
\u00c2m thanh l\u00e0 do s\u1ef1 rung \u0111\u1ed9ng c\u1ee7a v\u1eadt th\u1ec3 g\u00e2y n\u00ean. Khi ch\u1ea5t kh\u00ed trong qu\u1ea3 b\u00f3ng nh\u1ed3i nh\u00e9t qu\u00e1 nhi\u1ec1u, \u00e1p su\u1ea5t r\u1ea5t l\u1edbn, ch\u00fang li\u1ec1n ch\u1ecdc th\u1ee7ng l\u1edbp m\u00e0ng cao su m\u1ecfng \u0111\u1ec3 ph\u1ee5t ra, ch\u1ea5n \u0111\u1ed9ng r\u1ea5t m\u1ea1nh, n\u00ean ph\u00e1t ra m\u1ed9t ti\u1ebfng “b\u00f9m”.<\/p>\n\n\n\n
D\u00f2ng su\u1ed1i nh\u1ecf v\u00ec sao l\u1ea1i k\u00eau r\u00f3c r\u00e1ch m\u00e3i? V\u1ea5n \u0111\u1ec1 n\u00e0y c\u00f3 v\u1ebb nh\u01b0 ch\u1eb3ng li\u00ean quan g\u00ec v\u1edbi chuy\u1ec7n ch\u00fang ta th\u1ed5i b\u00f3ng bay c\u1ea3. Song ph\u00e2n t\u00edch k\u0129 th\u00ec nguy\u00ean l\u00ed l\u1ea1i l\u00e0 m\u1ed9t. N\u01b0\u1edbc su\u1ed1i t\u1eeb tr\u00ean cao ch\u1ea3y xu\u1ed1ng s\u1ebd cu\u1ed1n l\u1ea5y m\u1ed9t ph\u1ea7n kh\u00f4ng kh\u00ed v\u00e0o trong, h\u00ecnh th\u00e0nh n\u00ean nhi\u1ec1u bong b\u00f3ng trong n\u01b0\u1edbc. Khi bong b\u00f3ng b\u1ecb v\u1ee1 s\u1ebd ph\u00e1t ra ti\u1ebfng k\u00eau. \u0110\u1ed3ng th\u1eddi, n\u01b0\u1edbc su\u1ed1i d\u1ed9i xu\u1ed1ng s\u1ecfi \u0111\u00e1 ho\u1eb7c ch\u1ed7 l\u1ed3i l\u00f5m c\u0169ng c\u00f3 th\u1ec3 l\u00e0m cho kh\u00f4ng kh\u00ed ch\u1ea5n \u0111\u1ed9ng m\u00e0 ph\u00e1t ra ti\u1ebfng k\u00eau. \u1ede nh\u1eefng khe n\u00fai d\u1ed1c \u0111\u00e1, ti\u1ebfng n\u01b0\u1edbc r\u00f3c r\u00e1ch n\u00e0y c\u00f2n vang v\u1ecdng v\u00e0o tai kh\u00f4ng d\u1ee9t trong c\u00e1c l\u0169ng n\u00fai.<\/p>\n\n\n\n
T\u1eeb kh\u00f3a: Ch\u1ea5n \u0111\u1ed9ng; \u00c2m thanh.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
C\u00e1c b\u1ea1n nh\u1ecf \u0111\u1ec1u th\u00edch th\u1ed5i b\u00f3ng bay. B\u00f3ng th\u1ed5i to qu\u00e1, n\u00f3 s\u1ebd “b\u00f9m” m\u1ed9t ti\u1ebfng r\u1ed3i v\u1ee1 ra. V\u00ec sao b\u00f3ng khi b\u1ecb th\u1ed5i v\u1ee1 l\u1ea1i c\u00f3 ti\u1ebfng “b\u00f9m” nh\u1ec9? \u00c2m thanh l\u00e0 do s\u1ef1 rung \u0111\u1ed9ng c\u1ee7a v\u1eadt th\u1ec3 g\u00e2y n\u00ean. Khi ch\u1ea5t kh\u00ed trong qu\u1ea3 b\u00f3ng nh\u1ed3i nh\u00e9t qu\u00e1 nhi\u1ec1u, \u00e1p […]<\/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":[15,7],"tags":[],"class_list":["post-5612","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5612","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=5612"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5612\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5612"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5612"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}