{"id":5644,"date":"2021-11-20T09:39:20","date_gmt":"2021-11-20T02:39:20","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=5644"},"modified":"2021-11-20T12:41:08","modified_gmt":"2021-11-20T05:41:08","slug":"thang-nhiet-do-duoc-xac-dinh-nhu-the-nao","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/thang-nhiet-do-duoc-xac-dinh-nhu-the-nao\/","title":{"rendered":"Thang nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh nh\u01b0 th\u1ebf n\u00e0o?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Ch\u00fang ta bi\u1ebft r\u1eb1ng, nhi\u1ec7t k\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 c\u1ee7a v\u1eadt th\u1ec3 l\u00e0 bao nhi\u00eau \u0111\u1ed9, song thang nhi\u1ec7t \u0111\u1ed9 bi\u1ec3u th\u1ecb tr\u00ean nhi\u1ec7t k\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh nh\u01b0 th\u1ebf n\u00e0o nh\u1ec9?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u01b0\u1eddi \u0111\u1ea7u ti\u00ean \u0111\u1ecbnh ra thang nhi\u1ec7t \u0111\u1ed9 l\u00e0 nh\u00e0 v\u1eadt l\u00ed ng\u01b0\u1eddi \u0110\u1ee9c, Fahrenheit. \u00d4ng l\u1ea5y nhi\u1ec7t \u0111\u1ed9 \u1edf hai \u0111i\u1ec3m &#8211; b\u0103ng tan ch\u1ea3y v\u00e0 n\u01b0\u1edbc s\u00f4i, l\u00e0m hai \u0111i\u1ec3m c\u01a1 b\u1ea3n r\u1ed3i chia \u0111\u1ed9 l\u00ean tr\u00ean nhi\u1ec7t k\u1ebf thu\u1ef7 ng\u00e2n. Tr\u00ean c\u1ed9t thu\u1ef7 ng\u00e2n, \u00f4ng chia kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111i\u1ec3m nhi\u1ec7t \u0111\u1ed9 th\u00e0nh 180 v\u1ea1ch nh\u1ecf, m\u1ed7i v\u1ea1ch nh\u1ecf l\u00e0 1 \u0111\u1ed9. \u0110\u00f3 l\u00e0 \u0111\u1ed9 Fahrenheit, bi\u1ec3u th\u1ecb b\u1eb1ng &#8220;F&#8221;. Tuy nhi\u00ean, \u00f4ng kh\u00f4ng \u0111\u1eb7t \u0111i\u1ec3m b\u0103ng tan l\u00e0 0\u00b0F, m\u00e0 l\u00e0 32\u00b0F, nh\u01b0 v\u1eady \u0111i\u1ec3m s\u00f4i c\u1ee7a n\u01b0\u1edbc l\u00e0 212\u00b0F. Hi\u1ec7n nay, thang nhi\u1ec7t \u0111\u1ed9 Fahrenheit v\u1eabn c\u00f2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c n\u01b0\u1edbc v\u00e0 khu v\u1ef1c nh\u01b0 Anh, Ch\u00e2u B\u1eafc M\u0129, Ch\u00e2u \u0110\u1ea1i D\u01b0\u01a1ng, Nam Phi v.v.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch x\u00e1c \u0111\u1ecbnh thang nhi\u1ec7t \u0111\u1ed9 th\u1ee9 hai l\u00e0 do nh\u00e0 thi\u00ean v\u0103n ng\u01b0\u1eddi Thu\u1ef5 \u0110i\u1ec3n, Celsius, \u0111\u1ec1 xu\u1ea5t n\u0103m 1742. Nhi\u1ec7t k\u1ebf v\u00e0 hai \u0111i\u1ec3m nhi\u1ec7t \u0111\u1ed9 c\u01a1 b\u1ea3n m\u00e0 \u00f4ng ch\u1ecdn d\u00f9ng ho\u00e0n to\u00e0n gi\u1ed1ng nh\u01b0 Fahrenheit, v\u1eabn l\u00e0 \u0111i\u1ec3m b\u0103ng tan v\u00e0 \u0111i\u1ec3m s\u00f4i c\u1ee7a n\u01b0\u1edbc, song Celsius l\u1ea1i chia \u0111\u1ec1u c\u1ed9t thu\u1ef7 ng\u00e2n th\u00e0nh 100 v\u1ea1ch, m\u1ed7i v\u1ea1ch l\u00e0 1\u00b0C. \u00d4ng \u0111\u1eb7t \u0111i\u1ec3m tan ch\u1ea3y c\u1ee7a b\u0103ng l\u00e0 0\u00b0C, nh\u01b0 v\u1eady \u0111i\u1ec3m s\u00f4i c\u1ee7a n\u01b0\u1edbc l\u00e0 100\u00b0C. R\u00f5 r\u00e0ng l\u00e0 thang nhi\u1ec7t \u0111\u1ed9 c\u1ee7a Celsius s\u1eed d\u1ee5ng ti\u1ec7n l\u1ee3i h\u01a1n thang nhi\u1ec7t \u0111\u1ed9 Fahrenheit. Hi\u1ec7n nay, \u0111a s\u1ed1 c\u00e1c n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi \u0111\u1ec1u d\u00f9ng lo\u1ea1i thang nhi\u1ec7t \u0111\u1ed9 n\u00e0y.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch x\u00e1c \u0111\u1ecbnh thang nhi\u1ec7t \u0111\u1ed9 th\u1ee9 ba l\u00e0 do nh\u00e0 v\u1eadt l\u00ed ng\u01b0\u1eddi Anh, Thomson (t\u1ee9c hu\u00e2n t\u01b0\u1edbc Kelvin), n\u00eau l\u00ean v\u00e0o n\u0103m 1848. N\u00f3 l\u00e0 m\u1ed9t lo\u1ea1i thang nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng li\u00ean quan g\u00ec v\u1edbi \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt ch\u1ea5t do nhi\u1ec7t v\u00e0 ch\u1ee7ng lo\u1ea1i c\u1ee7a nhi\u1ec7t k\u1ebf, g\u1ecdi l\u00e0 thang nhi\u1ec7t \u0111\u1ed9 nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc. \u0110\u01a1n v\u1ecb c\u1ee7a n\u00f3 l\u00e0 kelvin, d\u00f9ng K \u0111\u1ec3 bi\u1ec3u th\u1ecb. \u0110\u1ea1i h\u1ed9i \u0111o l\u01b0\u1eddng qu\u1ed1c t\u1ebf kho\u00e1 11 n\u0103m 1960 quy \u0111\u1ecbnh, thang nhi\u1ec7t \u0111\u1ed9 nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc ch\u1ecdn \u0111i\u1ec3m ba pha (hay ba tr\u1ea1ng th\u00e1i) c\u1ee7a n\u01b0\u1edbc, t\u1ee9c l\u00e0 nhi\u1ec7t \u0111\u1ed9 273,15 K khi b\u0103ng, n\u01b0\u1edbc v\u00e0 h\u01a1i n\u01b0\u1edbc c\u00f9ng t\u1ed3n t\u1ea1i l\u00e0m \u0111i\u1ec3m g\u1ed1c \u0111o nhi\u1ec7t \u0111\u1ed9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thang nhi\u1ec7t \u0111\u1ed9 nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc v\u00e0 thang nhi\u1ec7t \u0111\u1ed9 Celsius kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 th\u1ef1c ch\u1ea5t, v\u00ec kho\u1ea3ng c\u00e1ch m\u1ed7i m\u1ed9t \u0111\u1ed9 c\u1ee7a ch\u00fang b\u1eb1ng nhau, t\u1ee9c l\u00e0 kho\u1ea3ng c\u00e1ch nhi\u1ec7t \u0111\u1ed9 m\u00e0 1 K bi\u1ec3u th\u1ecb b\u1eb1ng v\u1edbi kho\u1ea3ng c\u00e1ch 1\u00b0C. Ch\u1ec9 c\u00f3 s\u1ef1 kh\u00e1c nhau v\u1ec1 c\u00e1ch t\u00ednh \u0111i\u1ec3m g\u1ed1c c\u1ee7a nhi\u1ec7t \u0111\u1ed9. Ch\u00fang ch\u1ec9 ch\u00eanh nhau m\u1ed9t h\u1eb1ng s\u1ed1, \u0111\u00f3 l\u00e0 273,15.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb kho\u00e1: Thang nhi\u1ec7t \u0111\u1ed9 Celsius; Thang nhi\u1ec7t \u0111\u1ed9 Fahrenheit; Thang nhi\u1ec7t \u0111\u1ed9 nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc; \u0110i\u1ec3m ba pha c\u1ee7a n\u01b0\u1edbc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ch\u00fang ta bi\u1ebft r\u1eb1ng, nhi\u1ec7t k\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 c\u1ee7a v\u1eadt th\u1ec3 l\u00e0 bao nhi\u00eau \u0111\u1ed9, song thang nhi\u1ec7t \u0111\u1ed9 bi\u1ec3u th\u1ecb tr\u00ean nhi\u1ec7t k\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh nh\u01b0 th\u1ebf n\u00e0o nh\u1ec9? Ng\u01b0\u1eddi \u0111\u1ea7u ti\u00ean \u0111\u1ecbnh ra thang nhi\u1ec7t \u0111\u1ed9 l\u00e0 nh\u00e0 v\u1eadt l\u00ed ng\u01b0\u1eddi \u0110\u1ee9c, Fahrenheit. \u00d4ng l\u1ea5y [&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":[15,7],"tags":[],"class_list":["post-5644","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\/5644","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=5644"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5644\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}