{"id":8349,"date":"2021-11-21T11:47:39","date_gmt":"2021-11-21T04:47:39","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=8349"},"modified":"2021-11-21T12:31:41","modified_gmt":"2021-11-21T05:31:41","slug":"vi-sao-ruoi-co-the-dung-vung-tren-mat-phang-kinh-thang-goc","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/vi-sao-ruoi-co-the-dung-vung-tren-mat-phang-kinh-thang-goc\/","title":{"rendered":"V\u00ec sao ru\u1ed3i c\u00f3 th\u1ec3 \u0111\u1ee9ng v\u1eefng tr\u00ean m\u1eb7t ph\u1eb3ng k\u00ednh th\u1eb3ng g\u00f3c?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Ng\u01b0\u1eddi \u0111i b\u1ed9 tr\u00ean m\u1eb7t b\u0103ng th\u01b0\u1eddng s\u1ebd ng\u00e3. C\u00f2n ru\u1ed3i \u0111\u1eadu tr\u00ean m\u1eb7t ph\u1eb3ng k\u00ednh th\u1eb3ng g\u00f3c kh\u00f4ng nh\u1eefng s\u1ebd kh\u00f4ng b\u1ecb r\u01a1i xu\u1ed1ng m\u00e0 c\u00f2n c\u00f3 th\u1ec3 b\u00f2 t\u1ef1 do tr\u00ean k\u00ednh th\u1eb3ng g\u00f3c, \u0111\u00f3 l\u00e0 quy lu\u1eadt g\u00ec v\u1eady?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ru\u1ed3i v\u1ed1n c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m th\u00edch h\u1ee3p v\u1edbi \u0111i l\u1ea1i tr\u00ean m\u1eb7t k\u00ednh th\u1eb3ng g\u00f3c. Tr\u00ean 6 ch\u00e2n c\u1ee7a n\u00f3, m\u1ed7i ch\u00e2n c\u00f3 m\u1ed9t c\u00e1i &#8220;m\u00f3ng&#8221;, ph\u1ea7n g\u1ed1c c\u1ee7a m\u00f3ng c\u00f2n c\u00f3 m\u1ed9t b\u00e0n \u0111\u1ec7m m\u00f3ng \u0111\u01b0\u1ee3c m\u1ed9t h\u00e0ng l\u00f4ng m\u1ec1m m\u1ea1i che k\u00edn. Khi ru\u1ed3i \u0111i l\u1ea1i tr\u00ean t\u1ea5m k\u00ednh, ch\u1ed7 nh\u1ecdn \u1edf \u0111\u00e1m l\u00f4ng m\u1ec1m m\u1ea1i c\u1ee7a ph\u1ea7n ch\u00e2n li\u1ec1n ti\u1ebft ra m\u1ed9t lo\u1ea1i ch\u1ea5t l\u1ecfng, qua ph\u00e2n t\u00edch, ch\u1ea5t ti\u1ebft ra n\u00e0y \u0111\u01b0\u1ee3c t\u1ea1o n\u00ean b\u1edfi ch\u1ea5t m\u1ee1 trung t\u00ednh c\u00f3 kh\u1ea3 n\u0103ng d\u00ednh nh\u1ea5t \u0111\u1ecbnh. Ngo\u00e0i ra, b\u00e0n \u0111\u1ec7m m\u00f3ng c\u1ee7a lo\u00e0i ru\u1ed3i l\u00e0 m\u1ed9t k\u1ebft c\u1ea5u h\u00ecnh t\u00fai, b\u00ean trong xung huy\u1ebft, ph\u00eda d\u01b0\u1edbi l\u00f5m xu\u1ed1ng, t\u00e1c d\u1ee5ng nh\u01b0 m\u1ed9t chi\u1ebfc c\u1ed1c ch\u00e2n kh\u00f4ng \u0111\u1ec3 d\u1ec5 d\u00e0ng h\u00fat tr\u00ean b\u1ec1 m\u1eb7t nh\u1eb5n b\u00f3ng ho\u1eb7c tr\u00ean b\u1ec1 m\u1eb7t l\u1ed3i l\u00f5m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh t\u00e1c d\u1ee5ng c\u1ee7a vi\u1ec7c ti\u1ebft ra ch\u1ea5t m\u1ee1, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u1ec3 ru\u1ed3i \u0111i l\u1ea1i tr\u00ean m\u1eb7t k\u00ednh c\u00f3 ng\u00e2m ch\u1ea5t l\u1ecfng \u00eatilen l\u1ecdc, \u0111\u1ed3ng th\u1eddi \u0111o l\u01b0\u1eddng v\u00e0 x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng d\u00ednh c\u1ee7a n\u00f3, k\u1ebft qu\u1ea3 ch\u1ec9 c\u00f3 1\/10 ch\u1ea5t m\u1ee1 ti\u1ebft ra. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y r\u1eb1ng, gi\u1eefa k\u00ednh v\u00e0 ph\u1ea7n l\u00f4ng m\u1ec1m th\u00ec s\u1ee9c k\u00e9o m\u1eb7t c\u1ee7a ch\u1ea5t m\u1ee1 n\u00e0y \u0111\u00e3 ph\u00e1t huy \u0111\u01b0\u1ee3c t\u00e1c d\u1ee5ng d\u00ednh. L\u00f4ng m\u1ec1m c\u1ee7a ru\u1ed3i ti\u1ebfp x\u00fac b\u1ec1 m\u1eb7t k\u00ednh c\u00f3 li\u00ean quan v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng m\u1ea5y chi\u1ebfc ch\u00e2n \u0111\u1ee9ng. Do v\u1eady, l\u1ef1c d\u00ednh tr\u00ean k\u00ednh v\u1edbi s\u1ed1 ch\u00e2n \u0111\u1ee9ng c\u1ee7a ru\u1ed3i c\u00f3 quan h\u1ec7 t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi nhau, t\u1ee9c l\u00e0 ch\u00e2n ti\u1ebfp x\u00fac v\u1edbi b\u1ec1 m\u1eb7t k\u00ednh c\u00e0ng nhi\u1ec1u th\u00ec l\u1ef1c d\u00ednh c\u00e0ng l\u1edbn.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ng\u01b0\u1eddi \u0111i b\u1ed9 tr\u00ean m\u1eb7t b\u0103ng th\u01b0\u1eddng s\u1ebd ng\u00e3. C\u00f2n ru\u1ed3i \u0111\u1eadu tr\u00ean m\u1eb7t ph\u1eb3ng k\u00ednh th\u1eb3ng g\u00f3c kh\u00f4ng nh\u1eefng s\u1ebd kh\u00f4ng b\u1ecb r\u01a1i xu\u1ed1ng m\u00e0 c\u00f2n c\u00f3 th\u1ec3 b\u00f2 t\u1ef1 do tr\u00ean k\u00ednh th\u1eb3ng g\u00f3c, \u0111\u00f3 l\u00e0 quy lu\u1eadt g\u00ec v\u1eady? Ru\u1ed3i v\u1ed1n c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m th\u00edch h\u1ee3p v\u1edbi \u0111i l\u1ea1i tr\u00ean m\u1eb7t k\u00ednh [&hellip;]<\/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-8349","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\/8349","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=8349"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8349\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}