G\u1ed1m c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m nh\u01b0 \u00edt b\u1ecb nhi\u1ec5m b\u1ea9n, kh\u00f3 b\u1ecb m\u00e0i m\u00f2n, kh\u00f4ng b\u1ecb g\u1ec9. Nh\u01b0ng g\u1ed1m th\u01b0\u1eddng c\u00f3 nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 d\u1ec5 b\u1ecb v\u1ee1. C\u00e1c \u0111\u1ed3 d\u00f9ng gia \u0111\u00ecnh b\u1eb1ng g\u1ed1m nh\u01b0 v\u1ea1i, chum, d\u00f9ng r\u1ea5t b\u1ec1n nh\u01b0ng n\u1ebfu kh\u00f4ng c\u1ea9n th\u1eadn r\u1ea5t d\u1ec5 b\u1ecb v\u1ee1. C\u00e1c b\u00ecnh \u0111\u1ef1ng b\u1eb1ng g\u1ed1m s\u1ebd r\u1ea5t \u0111\u1eb9p nh\u01b0ng n\u1ebfu nh\u1ee1 tay \u0111\u00e1nh r\u01a1i s\u1ebd v\u1ee1 tan.<\/p>\n\n\n\n
Th\u1ebf c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c lo\u1ea1i g\u1ed1m kh\u00f4ng v\u1ee1 \u0111\u01b0\u1ee3c kh\u00f4ng? Ch\u00fang ta bi\u1ebft r\u1eb1ng trong th\u1ef1c ti\u1ec5n cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y, \u0111\u1ea5t s\u00e9t kh\u00f4 khi b\u00f3p d\u1ec5 n\u00e1t, nh\u01b0ng n\u1ebfu nh\u00e0o r\u01a1m v\u00e0o \u0111\u1ea5t s\u00e9t th\u00ec t\u01b0\u1eddng \u0111\u1ea5t s\u00e9t – r\u01a1m r\u1ea1 s\u1ebd kh\u00e1 b\u1ec1n. M\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft v\u1ecf s\u00f2 v\u1eeba c\u1ee9ng l\u1ea1i v\u1eeba b\u1ec1n ch\u1eafc. Th\u1ebf nh\u01b0ng v\u1ecf s\u00f2 l\u1ea1i do nhi\u1ec1u l\u1edbp canxi cacbonat t\u1ea1o n\u00ean. L\u1edbp m\u1ecfng canxi cacbonat r\u1ea5t gi\u00f2n, ch\u1ec9 c\u1ea7n n\u00e9m nh\u1eb9 l\u00e0 v\u1ee1 tan. Th\u1ebf nh\u01b0ng gi\u1eefa hai l\u1edbp m\u1ecfng canxi cacbonat xen v\u00e0o m\u1ed9t l\u1edbp ch\u1ea5t h\u1eefu c\u01a1 l\u00e0m ch\u1ea5t k\u1ebft d\u00ednh, l\u00e0m cho hai l\u1edbp v\u1ecf d\u00ednh ch\u1eb7t v\u00e0o nhau th\u00ec r\u1ea5t kh\u00f3 b\u1ecb \u0111\u1eadp v\u1ee1. T\u1eeb \u0111\u00f3 c\u00e1c nh\u00e0 khoa h\u1ecdc ngh\u0129 \u0111\u1ebfn vi\u1ec7c d\u00f9ng s\u01a1n k\u1ebft h\u1ee3p v\u1edbi s\u1ee3i v\u1ea3i \u0111\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh n\u0103ng c\u1ee7a g\u1ed1m. V\u00ed d\u1ee5 n\u1ebfu k\u1ebft h\u1ee3p s\u1ee3i tantan v\u1edbi silic nhi\u1ec5m nit\u01a1 s\u1ebd ch\u1ebf t\u1ea1o \u0111\u01b0\u1ee3c “g\u1ed1m t\u0103ng c\u01b0\u1eddng b\u1eb1ng s\u1ee3i” \u1edf nhi\u1ec7t \u0111\u1ed9 th\u01b0\u1eddng, lo\u1ea1i g\u1ed1m n\u00e0y ch\u1ecbu \u0111\u01b0\u1ee3c va ch\u1ea1m c\u01a1 gi\u1edbi xung k\u00edch t\u0103ng h\u01a1n 30 l\u1ea7n! N\u1ebfu l\u1ea5y vonfram l\u00e0m c\u01a1 s\u1edf k\u1ebft h\u1ee3p v\u1edbi silic nhi\u1ec5m nit\u01a1 ta s\u1ebd \u0111\u01b0\u1ee3c lo\u1ea1i g\u1ed1m ph\u1ee9c h\u1ee3p th\u00ec kh\u1ea3 n\u0103ng ch\u1ed1ng g\u00e3y v\u1ee1 so v\u1edbi silic nhi\u1ec5m nit\u01a1 \u0111\u01a1n thu\u1ea7n t\u0103ng h\u00e0ng tr\u0103m l\u1ea7n. T\u1eeb c\u1ea5u tr\u00fac v\u1ecf s\u00f2 \u0111\u00e3 g\u1ee3i \u00fd cho c\u00e1c nh\u00e0 khoa h\u1ecdc d\u00f9ng b\u1ed9t granit ph\u1ee7 th\u00e0nh nhi\u1ec1u l\u1edbp tr\u00ean t\u1ea5m cacbon – silic r\u1ed3i \u0111em gia nhi\u1ec7t v\u00e0 \u00e9p, s\u1ebd t\u1ea1o \u0111\u01b0\u1ee3c “g\u1ed1m granit cacbon – silic”. Th\u1ef1c nghi\u1ec7m ch\u1ee9ng minh v\u1edbi lo\u1ea1i g\u1ed1m “granit cacbon – silic” c\u00f3 k\u1ebft c\u1ea5u nhi\u1ec1u l\u1edbp nh\u01b0 v\u1ecf s\u00f2 th\u00ec c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a g\u1ed1m s\u1ebd t\u0103ng h\u01a1n 100 l\u1ea7n so v\u1edbi g\u1ed1m cacbon – silic th\u01b0\u1eddng.<\/p>\n\n\n\n
V\u1edbi c\u00e1c g\u1ed1m ph\u1ee9c h\u1ee3p c\u00f3 gia c\u00f4ng \u0111\u1eb7c bi\u1ec7t kh\u00f4ng ch\u1ec9 l\u00e0 lo\u1ea1i g\u1ed1m kh\u00f4ng v\u1ee1, m\u00e0 d\u00f9 c\u00f3 d\u00f9ng to\u00e0n l\u1ef1c n\u00e9m v\u00e0o n\u1ec1n b\u00ea t\u00f4ng th\u00ec c\u0169ng kh\u00f4ng h\u1ec1 h\u1ea5n g\u00ec. C\u00e1c lo\u1ea1i g\u1ed1m kh\u00f4ng v\u1ee1 n\u00e0y tr\u01b0\u1edbc m\u1eaft \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0o c\u00e1c m\u1ee5c \u0111\u00edch khoa h\u1ecdc k\u1ef9 thu\u1eadt cao nh\u01b0 d\u00f9ng \u0111\u1ec3 ch\u1ebf t\u1ea1o xe \u00f4 t\u00f4, m\u00e1y bay, \u0111\u1ed9ng c\u01a1 c\u00f3 v\u1eadn t\u1ed1c l\u1edbn c\u00f9ng c\u00e1c b\u1ed9 ph\u1eadn tr\u1ecdng y\u1ebfu kh\u00e1c. Lo\u1ea1i g\u1ed1m n\u00e0y, r\u00f5 r\u00e0ng s\u1ebd c\u00f3 ph\u1ea1m vi s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong th\u1ebf k\u1ef7 XXI v\u00e0 c\u00f3 tri\u1ec3n v\u1ecdng to l\u1edbn.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: G\u1ed1m ph\u1ee9c h\u1ee3p; C\u01b0\u1eddng \u0111\u1ed9 ch\u1ecbu l\u1ef1c.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
G\u1ed1m c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m nh\u01b0 \u00edt b\u1ecb nhi\u1ec5m b\u1ea9n, kh\u00f3 b\u1ecb m\u00e0i m\u00f2n, kh\u00f4ng b\u1ecb g\u1ec9. Nh\u01b0ng g\u1ed1m th\u01b0\u1eddng c\u00f3 nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 d\u1ec5 b\u1ecb v\u1ee1. C\u00e1c \u0111\u1ed3 d\u00f9ng gia \u0111\u00ecnh b\u1eb1ng g\u1ed1m nh\u01b0 v\u1ea1i, chum, d\u00f9ng r\u1ea5t b\u1ec1n nh\u01b0ng n\u1ebfu kh\u00f4ng c\u1ea9n th\u1eadn r\u1ea5t d\u1ec5 b\u1ecb v\u1ee1. C\u00e1c b\u00ecnh \u0111\u1ef1ng b\u1eb1ng g\u1ed1m s\u1ebd […]<\/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":[8,15],"tags":[],"class_list":["post-7844","post","type-post","status-publish","format-standard","hentry","category-hoa-hoc","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7844","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=7844"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7844\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7844"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}