T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 4 – Arkady Leokum<\/p>\n\n\n\n
Ch\u1eafc ch\u00fang ta ai c\u0169ng c\u00f3 d\u1ecbp s\u1eed d\u1ee5ng t\u1edbi \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng r\u1ea5t nh\u1ecf. Khi ch\u1ebf t\u1ea1o m\u00e1y hay trong nhi\u1ec1u vi\u1ec7c kh\u00e1c c\u00f3 khi ta c\u1ea7n t\u1edbi \u0111\u01a1n v\u1ecb \u0111o 1\/1000cm ho\u1eb7c nh\u1ecf h\u01a1n n\u1eefa. \u0111\u1ec3 \u0111o nh\u1eefng \u0111\u01a1n v\u1ecb nh\u1ecf nh\u01b0 v\u1eady, ng\u01b0\u1eddi ta ph\u1ea3i d\u00f9ng m\u1ed9t d\u1ee5ng c\u1ee5 g\u1ecdi l\u00e0 \u201ctr\u1eafc vi k\u1ebf\u201d (micrometer) c\u00f3 ngh\u0129a l\u00e0 \u0111o b\u1eb1ng nh\u1eefng \u0111\u01a1n v\u1ecb r\u1ea5t nh\u1ecf. V\u1edbi d\u1ee5ng c\u1ee5 \u0111o n\u00e0y, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 ch\u1ebf ra nh\u1eefng d\u1ee5ng c\u1ee5 v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c t\u1edbi 1\/1.000.000cm (m\u1ed9t ph\u1ea7n tri\u1ec7u cm). \u0111\u1ec3 \u0111o b\u1ec1 d\u00e0y c\u1ee7a v\u1eadt, ng\u01b0\u1eddi ta d\u00f9ng m\u1ed9t d\u1ee5ng c\u1ee5 gi\u1ed1ng nh\u01b0 m\u1ed9t c\u00e1i k\u1eb9p, m\u1ed9t b\u00ean k\u1eb9p c\u1ed1 \u0111\u1ecbnh, b\u00ean kia c\u00f3 \u1ed1c xo\u00e1y \u00e9p v\u00e0o, khi mu\u1ed1n \u0111o b\u1ec1 d\u00e0y c\u1ee7a m\u1ed9t t\u1edd gi\u1ea5y, ta \u0111\u1eb7t t\u1edd gi\u1ea5y v\u00e0o gi\u1eefa k\u1eb9p v\u1eb7n \u1ed1c. Tr\u00ean tr\u1ee5c c\u00f3 \u0111\u00e1nh d\u1ea5u \u0111\u1ed9 d\u00e0y. Nh\u00ecn v\u00e0o \u0111\u1ed9 d\u00e0y \u0111\u00f3 ta bi\u1ebft v\u1eadt mu\u1ed1n \u0111o d\u00e0y bao nhi\u00eau. Tr\u1eafc vi k\u1ebf th\u00f4ng d\u1ee5ng v\u1eadn d\u1ee5ng b\u1eb1ng con \u1ed1c xo\u00e1y c\u00f3 40 \u201cr\u0103ng\u201d m\u1ed7i \u201cinch\u201d. B\u1edfi v\u1eady n\u1ebfu v\u1eb7n h\u1ebft m\u1ed9t \u201cr\u0103ng\u201d th\u00ec ta bi\u1ebft v\u1eadt \u0111\u00f3 d\u00e0y 1\/40 inch. C\u00f3 nh\u1eefng tr\u1eafc vi k\u1ebf \u0111o \u0111\u01b0\u1ee3c nh\u1eefng b\u1ec1 d\u00e0y r\u1ea5t nh\u1ecf, nh\u1ecf t\u1edbi 1\/1000, th\u1eadm ch\u00ed 1\/10.000 inch. C\u00e1c \u0111\u01a1n v\u1ecb \u0111o c\u1ee7a tr\u1eafc vi k\u1ebf th\u01b0\u1eddng theo h\u1ec7 th\u1ed1ng th\u1eadp ph\u00e2n v\u00e0 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cmils\u201d, ch\u1eb3ng h\u1ea1n b\u1ec1 d\u00e0y c\u1ee7a m\u1ed9t t\u1edd gi\u1ea5y b\u00e1o th\u00f4ng th\u01b0\u1eddng l\u00e0 0,0035 inch hay l\u00e0 35 mils.<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 4 – Arkady Leokum Ch\u1eafc ch\u00fang ta ai c\u0169ng c\u00f3 d\u1ecbp s\u1eed d\u1ee5ng t\u1edbi \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng r\u1ea5t nh\u1ecf. Khi ch\u1ebf t\u1ea1o m\u00e1y hay trong nhi\u1ec1u vi\u1ec7c kh\u00e1c c\u00f3 khi ta c\u1ea7n t\u1edbi \u0111\u01a1n v\u1ecb \u0111o 1\/1000cm ho\u1eb7c nh\u1ecf h\u01a1n n\u1eefa. \u0111\u1ec3 […]<\/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],"tags":[],"class_list":["post-14425","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14425","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=14425"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14425\/revisions"}],"predecessor-version":[{"id":14426,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14425\/revisions\/14426"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=14425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=14425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=14425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}