T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 3 – Arkady Leokum<\/p>\n\n\n\n
Kh\u1eafp n\u01a1i quanh ta \u0111\u1ec1u c\u00f3 kh\u00f4ng kh\u00ed. B\u1ea5t c\u1ee9 m\u1ed9t c\u00e1i hang, c\u00e1i l\u1ed7, khe\u2026 ngh\u0129a l\u00e0 b\u1ea5t c\u1ee9 m\u1ed9t \u201ckho\u1ea3ng tr\u1ed1ng\u201d n\u00e0o c\u0169ng \u0111\u1ec1u ch\u1ee9a kh\u00f4ng kh\u00ed. M\u1ed7i khi ta h\u00edt v\u00e0o, ph\u1ed5i ta l\u1ea1i ch\u1ee9a \u0111\u1ea7y kh\u00f4ng kh\u00ed. Ta kh\u00f4ng nh\u00ecn, kh\u00f4ng th\u1ea5y, kh\u00f4ng ng\u1eedi, kh\u00f4ng nghe, kh\u00f4ng s\u1edd, kh\u00f4ng c\u1ea3m (tr\u1eeb khi c\u00f3 gi\u00f3) \u0111\u01b0\u1ee3c kh\u00f4ng kh\u00ed. Tuy v\u1eady kh\u00f4ng kh\u00ed v\u1eabn hi\u1ec7n h\u1eefu quanh ta m\u1ed9t c\u00e1ch \u201cv\u00f4 h\u00ecnh\u201d. Kh\u00f4ng kh\u00ed l\u00e0 m\u1ed9t d\u1ea1ng v\u1eadt ch\u1ea5t. V\u1eadt ch\u1ea5t c\u00f3 th\u1ec3 \u1edf tr\u1ea1ng th\u00e1i \u0111\u1eb7c, l\u1ecfng hay h\u01a1i. V\u1eadt ch\u1ea5t m\u00e0 ta g\u1ecdi l\u00e0 \u201ckh\u00f4ng kh\u00ed\u201d l\u00e0 v\u1eadt lu\u00f4n lu\u00f4n \u1edf tr\u1ea1ng th\u00e1i h\u01a1i (gas).<\/p>\n\n\n\n
Th\u1eadt ra, kh\u00f4ng kh\u00ed l\u00e0 m\u1ed9t h\u1ed7n h\u1ee3p nhi\u1ec1u lo\u1ea1i h\u01a1i. Hai lo\u1ea1i h\u01a1i ch\u1ee7 y\u1ebfu trong kh\u00f4ng kh\u00ed l\u00e0 nit\u01a1 v\u00e0 oxy. N\u00f3 chi\u1ebfm t\u1edbi 99% t\u1ec9 l\u1ec7 kh\u00f4ng kh\u00ed. Gi\u1eefa hai lo\u1ea1i kh\u00ed n\u00e0y, ta th\u1ea5y c\u00f3 78% l\u00e0 kh\u00ed nit\u01a1 v\u00e0 21% l\u00e0 kh\u00ed oxy. C\u0169ng c\u00f3 m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf kh\u00ed carbon dioxide m\u00e0 ta th\u01b0\u1eddng g\u1ecdi l\u00e0 th\u00e1n kh\u00ed. Lo\u1ea1i kh\u00ed n\u00e0y l\u00e0 do c\u00e1c sinh v\u1eadt \u0111\u00e3 \u201cnh\u1ea3\u201d v\u00e0o kh\u00f4ng kh\u00ed. M\u1ed9t ph\u1ea7n tr\u0103m c\u00f2n l\u1ea1i g\u1ed3m nhi\u1ec1u lo\u1ea1i kh\u00ed hi\u1ebfm kh\u00e1c nh\u01b0 argon, neon, helium, krypton v\u00e0 xenon. \u201cBi\u1ec3n kh\u00f4ng kh\u00ed\u201d – hay l\u00e0 l\u1edbp kh\u00ed quy\u1ec3n – l\u00e0 m\u1ed9t kh\u00f4ng kh\u00ed d\u1ea7y m\u1ea5y ch\u1ee5c ki-l\u00f4-m\u00e9t bao quanh \u0111\u1ecba c\u1ea7u. Kh\u00f4ng kh\u00ed l\u00e0 v\u1eadt ch\u1ea5t, do \u0111\u00f3, n\u00f3 b\u1ecb h\u1ea5p l\u1ef1c c\u1ee7a tr\u00e1i \u0111\u1ea5t k\u00e9o n\u00f3 xu\u1ed1ng, gi\u1eef n\u00f3 l\u1ea1i. N\u1ebfu kh\u00f4ng c\u00f3 h\u1ea5p l\u1ef1c c\u1ee7a tr\u00e1i \u0111\u1ea5t th\u00ec kh\u00f4ng kh\u00ed bay tu\u1ed1t lu\u1ed1t ra ngo\u00e0i kh\u00f4ng gian r\u1ed3i c\u00f2n \u0111\u00e2u. B\u1edfi v\u1eady kh\u00f4ng kh\u00ed c\u0169ng c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng. Tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4ng kh\u00ed c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 kh\u00ed \u00e1p. Kh\u00f4ng kh\u00ed tr\u01b0\u01a1ng \u00e1p l\u1ef1c v\u00e0o t\u1ee9 ph\u00eda tr\u00ean th\u00e2n th\u1ec3 ta c\u0169ng nh\u01b0 khi ta l\u1ed9i trong n\u01b0\u1edbc th\u00ec n\u01b0\u1edbc c\u0169ng tr\u01b0\u01a1ng s\u1ee9c \u00e9p v\u00e0o t\u1ee9 ph\u00eda tr\u00ean th\u00e2n th\u1ec3 ta.<\/p>\n\n\n\n
Tr\u00e8o l\u00ean n\u00fai cao ho\u1eb7c leo l\u00ean m\u00e1y bay – \u1edf \u0111\u00f3 kh\u00f4ng kh\u00ed \u201clo\u00e3ng\u201d – s\u1ee9c \u00e9p c\u1ee7a kh\u00f4ng kh\u00ed gi\u1ea3m, do \u0111\u00f3 s\u1ee9c \u00e9p c\u1ee7a n\u00f3 tr\u00ean c\u01a1 th\u1ec3 ta c\u0169ng gi\u1ea3m theo. \u1ede \u0111\u1ed9 cao kho\u1ea3ng 12km, \u00e1p kh\u00ed ch\u1ec9 c\u00f2n b\u1eb1ng 1\/8 \u00e1p kh\u00ed tr\u00ean m\u1eb7t bi\u1ec3n. \u1ede \u0111\u1ed9 cao kho\u1ea3ng 100km th\u00ec h\u1ea7u nh\u01b0 kh\u00f4ng c\u00f2n \u00e1p kh\u00ed n\u1eefa.<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 3 – Arkady Leokum Kh\u1eafp n\u01a1i quanh ta \u0111\u1ec1u c\u00f3 kh\u00f4ng kh\u00ed. B\u1ea5t c\u1ee9 m\u1ed9t c\u00e1i hang, c\u00e1i l\u1ed7, khe\u2026 ngh\u0129a l\u00e0 b\u1ea5t c\u1ee9 m\u1ed9t \u201ckho\u1ea3ng tr\u1ed1ng\u201d n\u00e0o c\u0169ng \u0111\u1ec1u ch\u1ee9a kh\u00f4ng kh\u00ed. M\u1ed7i khi ta h\u00edt v\u00e0o, ph\u1ed5i ta l\u1ea1i ch\u1ee9a \u0111\u1ea7y […]<\/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],"tags":[],"class_list":["post-14075","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14075","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=14075"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14075\/revisions"}],"predecessor-version":[{"id":14076,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14075\/revisions\/14076"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=14075"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=14075"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=14075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}