V\u00e0o n\u0103m 1940, l\u1ea7n \u0111\u1ea7u ti\u00ean ng\u01b0\u1eddi ta n\u00f3i \u0111\u1ebfn m\u1ed9t thu\u1eadt ng\u1eef r\u1ea5t m\u1edbi “th\u00e9p th\u1ee7y tinh\u201d. Th\u00e9p thu\u1ef7 tinh, v\u1ec1 th\u00e0nh ph\u1ea7n kh\u00f4ng c\u00f3 li\u00ean quan g\u00ec \u0111\u1ebfn th\u00e9p nh\u01b0ng h\u1ebft s\u1ee9c b\u1ec1n ch\u1eafc: m\u1ed9t t\u1ea5m th\u00e9p th\u1ee7y tinh d\u00e0y 8mm c\u00f3 th\u1ec3 kh\u00f4ng b\u1ecb \u0111\u1ea1n xuy\u00ean th\u1ee7ng.<\/p>\n\n\n\n
M\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft trong b\u00ea t\u00f4ng c\u1ed1t th\u00e9p, s\u1ee3i th\u00e9p l\u00e0 “x\u01b0\u01a1ng” c\u00f2n xi m\u0103ng l\u00e0 “th\u1ecbt”. Th\u00e9p thu\u1ef7 tinh c\u0169ng c\u00f3 t\u00ednh ch\u1ea5t t\u01b0\u01a1ng t\u1ef1: Ng\u01b0\u1eddi ta nung ch\u1ea3y thu\u1ef7 tinh, k\u00e9o th\u00e0nh s\u1ee3i m\u1ea3nh. S\u1ee3i thu\u1ef7 tinh c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i, c\u00f3 th\u1ec3 d\u1ec7t th\u00e0nh l\u1ee5a, th\u00e0nh v\u1ea3i. Ng\u01b0\u1eddi ta cu\u1ed9n v\u1ea3i thu\u1ef7 tinh th\u00e0nh nhi\u1ec1u l\u1edbp, \u00e9p v\u1edbi nhau r\u1ed3i x\u1eed l\u00fd b\u1eb1ng ch\u1ea5t d\u1ebbo \u0111\u00e3 \u0111\u1ed1t n\u00f3ng ch\u1ea3y. Nh\u1edd v\u1eady ng\u01b0\u1eddi ta \u0111\u00e3 ch\u1ebf t\u1ea1o \u0111\u01b0\u1ee3c lo\u1ea1i v\u1eadt li\u1ec7u l\u1ea5y s\u1ee3i thu\u1ef7 tinh l\u00e0m “x\u01b0\u01a1ng” v\u00e0 ch\u1ea5t d\u1ebbo l\u00e0m “th\u1ecbt”. Lo\u1ea1i v\u1eadt li\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 th\u1ee7y tinh \u0111\u01b0\u1ee3c gia c\u1ed1 b\u1eb1ng ch\u1ea5t d\u1ebbo.<\/p>\n\n\n\n
V\u1ec1 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc th\u00ec th\u00e9p th\u1ee7y tinh c\u00f3 th\u1ec3 s\u00e1nh ngang v\u1edbi th\u00e9p, c\u00f2n v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang th\u00ec th\u00e9p thu\u1ef7 tinh ch\u1ec9 b\u1eb1ng 1\/4 th\u00e9p. Th\u00e9p thu\u1ef7 tinh l\u1ea1i kh\u00f4ng d\u1eabn \u0111i\u1ec7n, r\u1ea5t nh\u1eb9, v\u1ec1 m\u1eb7t n\u00e0y th\u00ec th\u00e9p kh\u00f4ng s\u00e1nh k\u1ecbp th\u00e9p thu\u1ef7 tinh.<\/p>\n\n\n\n
Th\u00e9p th\u1ee7y tinh l\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u c\u00f4ng ngh\u1ec7 m\u1edbi c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 ch\u1ebf t\u1ea1o khung, th\u00e2n xe, v\u1ecf ca n\u00f4, toa xe l\u1eeda, d\u00f9ng l\u00e0m v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng v\u1eeba nh\u1eb9 l\u1ea1i v\u1eeba b\u1ec1n. M\u1ed9t th\u00e2n xe \u00f4 t\u00f4 con ch\u1ec9 n\u1eb7ng h\u01a1n 150 kg. D\u00f9ng th\u00e9p th\u1ee7y tinh \u0111\u1ec3 ch\u1ebf t\u1ea1o khung xe \u0111\u1ea1p v\u1eeba nh\u1eb9 l\u1ea1i v\u1eeba \u0111\u1eb9p. D\u00f9ng th\u00e9p th\u1ee7y tinh ch\u1ebf t\u1ea1o v\u1ecf t\u00e0u thuy\u1ec1n v\u1eeba nh\u1eb9, l\u1ea1i kh\u00f4ng b\u1ecb m\u1ee5c n\u00e1t, so v\u1edbi v\u1ecf t\u00e0u thuy\u1ec1n ch\u1ebf t\u1ea1o b\u1eb1ng g\u1ed7 th\u00ec c\u00f3 th\u1ec3 ch\u1ebf t\u1ea1o th\u00e0nh h\u00ecnh nguy\u00ean kh\u1ed1i m\u00e0 kh\u00f4ng c\u1ea7n gh\u00e9p n\u1ed1i. G\u1eb7p tr\u01b0\u1eddng h\u1ee3p th\u00e2n xe ho\u1eb7c th\u00e2n thuy\u1ec1n c\u00f3 th\u1ee7ng m\u1ed9t ch\u1ed7 n\u00e0o \u0111\u00f3 ch\u1ec9 c\u1ea7n d\u00f9ng keo d\u00e1n g\u1ed7 b\u00f4i quanh l\u1ed7 th\u1ee7ng r\u1ed3i d\u00e1n m\u1ed9t mi\u1ebfng thu\u1ef7 tinh l\u00e0 c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c \u0111i l\u1ea1i.<\/p>\n\n\n\n
Ng\u00e0y nay ph\u1ea1m vi s\u1eed d\u1ee5ng c\u1ee7a th\u00e9p th\u1ee7y tinh ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng. Trong qu\u00e2n s\u1ef1, ng\u01b0\u1eddi ta d\u00f9ng th\u00e9p thu\u1ef7 tinh \u0111\u1ec3 ch\u1ebf t\u1ea1o xe t\u0103ng, ph\u00e1o thuy\u1ec1n nh\u1eb9. Trong th\u1ec3 d\u1ee5c th\u1ec3 thao ng\u01b0\u1eddi ta d\u00f9ng th\u00e9p thu\u1ef7 tinh \u0111\u1ec3 s\u1ea3n xu\u1ea5t g\u1eady nh\u1ea3y s\u00e0o, l\u00e0m cung b\u1eafn t\u00ean. Trong sinh ho\u1ea1t h\u1eb1ng ng\u00e0y, ng\u01b0\u1eddi ta d\u00f9ng th\u00e9p th\u1ee7y tinh \u0111\u1ec3 ch\u1ebf t\u1ea1o \u0111\u1ed3 \u0111\u1ef1ng n\u01b0\u1edbc, b\u1ec3 t\u1eafm v\u1eeba b\u1ec1n v\u1eeba \u0111\u1eb9p.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: Th\u00e9p th\u1ee7y tinh.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
V\u00e0o n\u0103m 1940, l\u1ea7n \u0111\u1ea7u ti\u00ean ng\u01b0\u1eddi ta n\u00f3i \u0111\u1ebfn m\u1ed9t thu\u1eadt ng\u1eef r\u1ea5t m\u1edbi “th\u00e9p th\u1ee7y tinh\u201d. Th\u00e9p thu\u1ef7 tinh, v\u1ec1 th\u00e0nh ph\u1ea7n kh\u00f4ng c\u00f3 li\u00ean quan g\u00ec \u0111\u1ebfn th\u00e9p nh\u01b0ng h\u1ebft s\u1ee9c b\u1ec1n ch\u1eafc: m\u1ed9t t\u1ea5m th\u00e9p th\u1ee7y tinh d\u00e0y 8mm c\u00f3 th\u1ec3 kh\u00f4ng b\u1ecb \u0111\u1ea1n xuy\u00ean th\u1ee7ng. M\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft trong […]<\/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-7825","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\/7825","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=7825"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7825\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7825"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7825"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}