{"id":5724,"date":"2021-11-20T09:48:31","date_gmt":"2021-11-20T02:48:31","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=5724"},"modified":"2021-11-20T12:42:03","modified_gmt":"2021-11-20T05:42:03","slug":"vi-sao-den-iot-vonfram-co-the-tich-nho-do-choi-cao-tuoi-tho-dai","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/vi-sao-den-iot-vonfram-co-the-tich-nho-do-choi-cao-tuoi-tho-dai\/","title":{"rendered":"V\u00ec sao \u0111\u00e8n i\u00f4t &#8211; vonfram c\u00f3 th\u1ec3 t\u00edch nh\u1ecf, \u0111\u1ed9 ch\u00f3i cao, tu\u1ed5i th\u1ecd d\u00e0i?"},"content":{"rendered":"\n<p>T\u1eeb khi Thomas E\u0111ison, nh\u00e0 ph\u00e1t minh Hoa K\u1ef3 ph\u00e1t minh ra \u0111\u00e8n \u0111i\u1ec7n cho \u0111\u1ebfn nay, lo\u00e0i ng\u01b0\u1eddi d\u00e3 ti\u1ebfn h\u00e0nh nhi\u1ec1u nghi\u00ean c\u1ee9u v\u00e0 c\u1ea3i ti\u1ebfn \u0111\u1ed1i v\u1edbi chi\u1ebfc b\u00f3ng \u0111\u00e8n nho nh\u1ecf. R\u00fat cho b\u00f3ng \u0111\u00e8n th\u00e0nh ch\u00e2n kh\u00f4ng c\u00f3 th\u1ec3 ph\u00f2ng ng\u1eeba d\u00e2y t\u00f3c b\u1ecb oxi ho\u00e1, r\u1ed3i n\u1ea1p kh\u00ed tr\u01a1 (nh\u01b0 acgon) v\u00e0o l\u1ea1i c\u00f3 th\u1ec3 l\u00e0m cho d\u00e2y vonfram gi\u1ea3m b\u1edbt b\u1ed1c h\u01a1i v\u00ec nhi\u1ec7t. Song tu\u1ed5i th\u1ecd c\u1ee7a lo\u1ea1i b\u00f3ng \u0111\u00e8n n\u00e0y v\u1eabn kh\u00f4ng \u0111\u01b0\u1ee3c d\u00e0i, d\u00f9ng m\u1ed9t th\u1eddi gian, \u0111\u1ed9 ch\u00f3i c\u1ee7a n\u00f3 c\u0169ng s\u1ebd y\u1ebfu \u0111i d\u1ea7n d\u1ea7n. \u0110\u00f3 l\u00e0 do khi d\u00e2y vonfram ph\u00e1t s\u00e1ng, vonfram tr\u00ean b\u1ec1 m\u1eb7t d\u1ea7n d\u1ea7n th\u0103ng hoa, h\u01a1i vonfram ch\u1ea1y \u0111\u1ebfn m\u1eb7t trong c\u1ee7a b\u00f3ng \u0111\u00e8n, g\u1eb7p l\u1ea1nh l\u1ea1i bi\u1ebfn th\u00e0nh vonfram th\u1ec3 r\u1eafn \u0111\u1ecdng l\u1ea1i tr\u00ean b\u00f3ng thu\u1ef7 tinh, l\u00e0m cho b\u00f3ng \u0111en \u0111i. \u0110\u1ed3ng th\u1eddi d\u00e2y vonfram c\u0169ng ng\u00e0y m\u1ed9t m\u1ea3nh \u0111i, sau c\u00f9ng r\u1ee5ng \u0111\u1ee9t.<\/p>\n\n\n\n<p><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>T\u1eeb khi Thomas E\u0111ison, nh\u00e0 ph\u00e1t minh Hoa K\u1ef3 ph\u00e1t minh ra \u0111\u00e8n \u0111i\u1ec7n cho \u0111\u1ebfn nay, lo\u00e0i ng\u01b0\u1eddi d\u00e3 ti\u1ebfn h\u00e0nh nhi\u1ec1u nghi\u00ean c\u1ee9u v\u00e0 c\u1ea3i ti\u1ebfn \u0111\u1ed1i v\u1edbi chi\u1ebfc b\u00f3ng \u0111\u00e8n nho nh\u1ecf. R\u00fat cho b\u00f3ng \u0111\u00e8n th\u00e0nh ch\u00e2n kh\u00f4ng c\u00f3 th\u1ec3 ph\u00f2ng ng\u1eeba d\u00e2y t\u00f3c b\u1ecb oxi ho\u00e1, r\u1ed3i n\u1ea1p kh\u00ed tr\u01a1 [&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-5724","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\/5724","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=5724"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5724\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5724"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5724"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5724"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}