{"id":5786,"date":"2021-11-20T09:55:45","date_gmt":"2021-11-20T02:55:45","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=5786"},"modified":"2021-11-20T13:24:21","modified_gmt":"2021-11-20T06:24:21","slug":"vi-sao-dung-kinh-hien-vi-co-the-thay-ro-nhung-vat-nho-li-ti","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/vi-sao-dung-kinh-hien-vi-co-the-thay-ro-nhung-vat-nho-li-ti\/","title":{"rendered":"V\u00ec sao d\u00f9ng k\u00ednh hi\u1ec3n vi c\u00f3 th\u1ec3 th\u1ea5y r\u00f5 nh\u1eefng v\u1eadt nh\u1ecf li ti?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Khi l\u00e0m th\u1ef1c nghi\u1ec7m sinh v\u1eadt, ch\u00fang ta th\u01b0\u1eddng ph\u1ea3i d\u00f9ng k\u00ednh hi\u1ec3n vi \u0111\u1ec3 quan s\u00e1t nh\u1eefng m\u1eabu sinh v\u1eadt c\u1ef1c k\u00ec nh\u1ecf nh\u01b0 vi khu\u1ea9n, t\u1ebf b\u00e0o v.v. V\u00ec sao nh\u1eefng v\u1eadt th\u1ec3 nh\u1ecf li ti, m\u1eaft th\u01b0\u1eddng ho\u00e0n to\u00e0n kh\u00f4ng sao th\u1ea5y r\u00f5 \u0111\u01b0\u1ee3c \u0111\u00f3, \u1edf d\u01b0\u1edbi k\u00ednh hi\u1ec3n vi l\u1ea1i c\u00f3 th\u1ec3 &#8220;b\u1ed9c l\u1ed9 nguy\u00ean h\u00ecnh&#8221;, \u0111\u1ec3 ch\u00fang ta tho\u1ea3 s\u1ee9c ng\u1eafm nh\u00ecn t\u1eebng li t\u1eebng t\u00ed nh\u1ec9?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1i \u0111\u00f3 ph\u1ea3i b\u1eaft \u0111\u1ea7u t\u1eeb k\u1ebft c\u1ea5u c\u1ee7a k\u00ednh hi\u1ec3n vi. N\u00f3 do hai nh\u00f3m th\u1ea5u k\u00ednh c\u1ea5u th\u00e0nh. Nh\u00f3m \u1edf g\u1ea7n v\u1eadt th\u1ec3 g\u1ecdi l\u00e0 v\u1eadt k\u00ednh, nh\u00f3m \u1edf g\u1ea7n m\u1eaft g\u1ecdi l\u00e0 th\u1ecb k\u00ednh. V\u1eadt k\u00ednh v\u00e0 th\u1ecb k\u00ednh \u0111\u1ec1u l\u00e0 th\u1ea5u k\u00ednh l\u1ed3i. \u0110\u1eb7t v\u1eadt k\u00ednh \u1edf g\u1ea7n ti\u00eau \u0111i\u1ec3m c\u1ee7a th\u1ecb k\u00ednh v\u00e0 t\u1ea1i ph\u00eda ngo\u00e0i c\u1ee7a ti\u00eau \u0111i\u1ec3m. V\u1eadt th\u1ec3 li\u1ec1n th\u00f4ng qua v\u1eadt k\u00ednh h\u00ecnh th\u00e0nh m\u1ed9t \u1ea3nh th\u1ef1c ph\u00f3ng to. \u1ea2nh th\u1ef1c n\u00e0y n\u1eb1m trong ti\u00eau \u0111i\u1ec3m c\u1ee7a th\u1ecb k\u00ednh, l\u1ea1i th\u00f4ng qua t\u00e1c d\u1ee5ng ph\u00f3ng to c\u1ee7a th\u1ecb k\u00ednh, thu \u0111\u01b0\u1ee3c m\u1ed9t \u1ea3nh \u1ea3o m\u1eaft th\u01b0\u1eddng quan s\u00e1t th\u1ea5y. V\u1eadt th\u1ec3 v\u1ed1n kh\u00f4ng nh\u00ecn th\u1ea5y tr\u1ef1c ti\u1ebfp b\u1eb1ng m\u1eaft th\u01b0\u1eddng, sau khi qua hai l\u1ea7n ph\u00f3ng to c\u1ee7a v\u1eadt k\u00ednh v\u00e0 th\u1ecb k\u00ednh, m\u1eaft c\u00f3 th\u1ec3 nh\u00ecn r\u00f5 nh\u1eefng chi ti\u1ebft c\u1ee7a n\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed9 ph\u00f3ng \u0111\u1ea1i c\u1ee7a k\u00ednh hi\u1ec3n vi b\u1eb1ng t\u00edch s\u1ed1 c\u1ee7a m\u1ed7i \u0111\u1ed9 ph\u00f3ng \u0111\u1ea1i ri\u00eang l\u1ebb c\u1ee7a v\u1eadt k\u00ednh v\u00e0 th\u1ecb k\u00ednh. V\u00ec l\u1ebd \u0111\u00f3 v\u1eadt k\u00ednh v\u00e0 th\u1ecb k\u00ednh c\u1ee7a k\u00ednh hi\u1ec3n vi l\u1ea7n l\u01b0\u1ee3t c\u00f3 kh\u1eafc c\u00e1c d\u00f2ng ch\u1eef &#8220;10 x&#8221;, &#8220;20 x&#8221; v.v. \u0111\u1ec3 ch\u00fang ta \u0111o t\u00edch s\u1ed1 m\u00e0 bi\u1ebft \u0111\u01b0\u1ee3c \u0111\u1ed9 ph\u00f3ng \u0111\u1ea1i c\u1ee7a k\u00ednh hi\u1ec3n vi \u0111ang d\u00f9ng. K\u00ednh hi\u1ec3n vi quang h\u1ecdc c\u00f3 th\u1ec3 ph\u00f3ng to v\u1eadt th\u1ec3 l\u00ean kho\u1ea3ng 2500 l\u1ea7n. \u0110\u1ec3 n\u00e2ng cao th\u00eam m\u1ed9t b\u01b0\u1edbc \u0111\u1ed9 ph\u00f3ng \u0111\u1ea1i, ng\u01b0\u1eddi ta \u0111\u00e3 ph\u00e1t minh ra k\u00ednh hi\u1ec3n vi \u0111i\u1ec7n t\u1eed, \u0111\u1ed9 ph\u00f3ng \u0111\u1ea1i c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi v\u00e0i tri\u1ec7u l\u1ea7n. D\u00f9ng k\u00ednh hi\u1ec3n vi \u0111\u01b0\u1eddng h\u1ea7m th\u1eadm ch\u00ed c\u00f3 th\u1ec3 quan s\u00e1t \u0111\u01b0\u1ee3c th\u1ebf gi\u1edbi nguy\u00ean t\u1eed b\u00e9 li ti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb kho\u00e1: K\u00ednh hi\u1ec3n vi; Th\u1ecb k\u00ednh; V\u1eadt k\u00ednh; \u0110\u1ed9 ph\u00f3ng \u0111\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Khi l\u00e0m th\u1ef1c nghi\u1ec7m sinh v\u1eadt, ch\u00fang ta th\u01b0\u1eddng ph\u1ea3i d\u00f9ng k\u00ednh hi\u1ec3n vi \u0111\u1ec3 quan s\u00e1t nh\u1eefng m\u1eabu sinh v\u1eadt c\u1ef1c k\u00ec nh\u1ecf nh\u01b0 vi khu\u1ea9n, t\u1ebf b\u00e0o v.v. V\u00ec sao nh\u1eefng v\u1eadt th\u1ec3 nh\u1ecf li ti, m\u1eaft th\u01b0\u1eddng ho\u00e0n to\u00e0n kh\u00f4ng sao th\u1ea5y r\u00f5 \u0111\u01b0\u1ee3c \u0111\u00f3, \u1edf d\u01b0\u1edbi k\u00ednh hi\u1ec3n vi l\u1ea1i c\u00f3 [&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-5786","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\/5786","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=5786"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5786\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5786"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}