{"id":5880,"date":"2021-11-20T10:06:34","date_gmt":"2021-11-20T03:06:34","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=5880"},"modified":"2021-11-20T13:24:14","modified_gmt":"2021-11-20T06:24:14","slug":"mat-dien-tu-giup-nguoi-mu-nhin-do-vat-nhu-the-nao","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/mat-dien-tu-giup-nguoi-mu-nhin-do-vat-nhu-the-nao\/","title":{"rendered":"M\u1eaft \u0111i\u1ec7n t\u1eed gi\u00fap ng\u01b0\u1eddi m\u00f9 &#8220;nh\u00ecn&#8221; \u0111\u1ed3 v\u1eadt nh\u01b0 th\u1ebf n\u00e0o?"},"content":{"rendered":"\n<p>Ng\u01b0\u1eddi m\u00f9 hai m\u1eaft b\u1ecb h\u1ecfng, kh\u00f4ng tr\u00f4ng th\u1ea5y th\u1ebf gi\u1edbi v\u00f4 bi\u00ean r\u1ef1c r\u1ee1 s\u1eafc m\u00e0u, trong \u0111\u1eddi s\u1ed1ng, c\u00f4ng t\u00e1c v\u00e0 <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc t\u1eadp<\/a> \u0111\u1ec1u g\u1eb7p mu\u00f4n v\u00e0n kh\u00f3 kh\u0103n. \u0110\u1ec3 gi\u00fap cho h\u1ecd &#8220;nh\u00ecn th\u1ea5y&#8221; \u0111\u1ed3 v\u1eadt, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 ph\u00e1t minh ra nhi\u1ec1u lo\u1ea1i m\u1eaft \u0111i\u1ec7n t\u1eed c\u00f3 t\u00e1c d\u1ee5ng \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi m\u00f9.<\/p>\n\n\n\n<p>M\u1ed9t lo\u1ea1i l\u00e0 m\u1eaft \u0111i\u1ec7n t\u1eed s\u00f3ng si\u00eau \u00e2m. Ch\u00ednh l\u00e0 d\u1ef1a v\u00e0o ph\u00e1t v\u00e0 thu s\u00f3ng si\u00eau \u00e2m m\u00e0 con d\u01a1i bay li\u1ec7ng tho\u1ea3i m\u00e1i tr\u00ean kh\u00f4ng. Con ng\u01b0\u1eddi nh\u1eadn \u0111\u01b0\u1ee3c g\u1ee3i \u00fd t\u1eeb con d\u01a1i, \u0111\u00e3 ph\u00e1t minh ra m\u1eaft \u0111i\u1ec7n t\u1eed s\u00f3ng si\u00eau \u00e2m. Th\u00f4ng th\u01b0\u1eddng, m\u1eaft \u0111i\u1ec7n t\u1eed s\u00f3ng si\u00eau \u00e2m \u0111\u01b0\u1ee3c g\u1eafn v\u00e0o k\u00ednh \u0111eo m\u1eaft, \u0111\u00e8n pin ho\u1eb7c g\u1eady ch\u1ed1ng m\u00e0 ng\u01b0\u1eddi m\u00f9 s\u1eed d\u1ee5ng. B\u1ed9 ph\u1eadn t\u1ea1o s\u00f3ng si\u00eau \u00e2m trong m\u1eaft \u0111i\u1ec7n t\u1eed ph\u00e1t s\u00f3ng ra v\u1ec1 ph\u00eda tr\u01b0\u1edbc m\u1eb7t. S\u00f3ng si\u00eau \u00e2m l\u00e0 m\u1ed9t lo\u1ea1i s\u00f3ng \u00e2m thanh, t\u1ea7n s\u1ed1 c\u1ee7a n\u00f3 cao h\u01a1n nhi\u1ec1u so v\u1edbi s\u00f3ng \u00e2m thanh b\u00ecnh th\u01b0\u1eddng. Tai ch\u00fang ta kh\u00f4ng nghe \u0111\u01b0\u1ee3c lo\u1ea1i s\u00f3ng si\u00eau \u00e2m \u0111\u00f3. Khi s\u00f3ng si\u00eau \u00e2m g\u1eb7p ph\u1ea3i v\u1eadt ch\u01b0\u1edbng ng\u1ea1i s\u1ebd ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i, \u0111\u01b0\u1ee3c b\u1ed9 ph\u1eadn thu s\u00f3ng si\u00eau \u00e2m trong m\u1eaft \u0111i\u1ec7n t\u1eed thu l\u1ea1i,r\u1ed3i chuy\u1ec3n bi\u1ebfn th\u00e0nh \u00e2m thanh t\u1eeb trong \u1ed1ng nghe ph\u00e1t ra. D\u1ef1a v\u00e0o s\u1ef1 thay \u0111\u1ed5i \u00e2m \u0111i\u1ec7u c\u1ee7a s\u00f3ng \u00e2m thanh, ng\u01b0\u1eddi m\u00f9 c\u00f3 th\u1ec3 ph\u00e1n \u0111o\u00e1n ra tr\u01b0\u1edbc m\u1eb7t l\u00e0 v\u1eadt ch\u01b0\u1edbng ng\u1ea1i nh\u01b0 th\u1ebf n\u00e0o.<\/p>\n\n\n\n<p>Lo\u1ea1i th\u1ee9 hai l\u00e0 m\u1eaft \u0111i\u1ec7n t\u1eed laze. Nguy\u00ean l\u00ed c\u1ee7a n\u00f3 t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1eaft \u0111i\u1ec7n t\u1eed s\u00f3ng si\u00eau \u00e2m, c\u0169ng c\u00f3 b\u1ed9 ph\u1eadn ph\u00e1t v\u00e0 b\u1ed9 ph\u1eadn thu. Ch\u1ec9 c\u00f3 \u0111i\u1ec1u n\u00f3 s\u1eed d\u1ee5ng laze ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 s\u00f3ng si\u00eau \u00e2m. B\u1ed9 ph\u1eadn t\u1ea1o tia laze trong m\u1eaft \u0111i\u1ec7n t\u1eed c\u00f3 th\u1ec3 sinh ra ba ch\u00f9m laze, chia ra ba \u0111\u1ed9 cao kh\u00e1c nhau: cao, gi\u1eefa, th\u1ea5p, ph\u00e1t ra ph\u00eda tr\u01b0\u1edbc m\u1eb7t. Sau khi g\u1eb7p v\u1eadt ch\u01b0\u1edbng ng\u1ea1i, ba ch\u00f9m \u0111\u00f3 li\u1ec1n ph\u1ea3n x\u1ea1 v\u1ec1, \u0111i v\u00e0o b\u1ed9 ph\u1eadn thu laze, r\u1ed3i chuy\u1ec3n \u0111\u1ed5i th\u00e0nh \u00e2m thanh ba \u00e2m \u0111i\u1ec7u cao th\u1ea5p kh\u00e1c nhau \u0111\u1ec3 ng\u01b0\u1eddi m\u00f9 ph\u00e2n bi\u1ec7t. C\u00e1i \u0111\u00f3 \u0111\u00e3 m\u1edf r\u1ed9ng ph\u1ea1m vi c\u00f3 th\u1ec3 &#8220;nh\u00ecn&#8221;, n\u00e2ng cao t\u00ednh chu\u1ea9n x\u00e1c c\u1ee7a t\u00e1c d\u1ee5ng gi\u00fap nh\u00ecn.<\/p>\n\n\n\n<p>M\u1eaft \u0111i\u1ec7n t\u1eed ph\u1ecfng sinh \u0111ang trong th\u1ef1c nghi\u1ec7m l\u00e0 lo\u1ea1i chuy\u1ec3n \u0111\u1ed5i h\u00ecnh \u1ea3nh m\u00e0 m\u00e1y ghi h\u00ecnh ghi l\u1ea1i th\u00e0nh t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n, \u0111\u01b0a v\u00e0o trong \u0111i\u1ec7n c\u1ef1c c\u1ea5y gh\u00e9p t\u1ea1i khu th\u1ea7n kinh th\u1ecb gi\u00e1c c\u1ee7a \u0111\u1ea1i n\u00e3o ng\u01b0\u1eddi m\u00f9, nh\u1eb1m l\u00e0m cho ng\u01b0\u1eddi m\u00f9 th\u1eadt s\u1ef1 &#8220;nh\u00ecn&#8221; th\u1ea5y h\u00ecnh d\u1ea1ng v\u00e0 m\u00e0u s\u1eafc c\u1ee7a v\u1eadt th\u1ec3.<\/p>\n\n\n\n<p>T\u1eeb kho\u00e1: M\u1eaft \u0111i\u1ec7n t\u1eed; S\u00f3ng si\u00eau \u00e2m; Laze; M\u1eaft \u0111i\u1ec7n t\u1eed ph\u1ecfng sinh.<\/p>\n\n\n\n<p><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ng\u01b0\u1eddi m\u00f9 hai m\u1eaft b\u1ecb h\u1ecfng, kh\u00f4ng tr\u00f4ng th\u1ea5y th\u1ebf gi\u1edbi v\u00f4 bi\u00ean r\u1ef1c r\u1ee1 s\u1eafc m\u00e0u, trong \u0111\u1eddi s\u1ed1ng, c\u00f4ng t\u00e1c v\u00e0 h\u1ecdc t\u1eadp \u0111\u1ec1u g\u1eb7p mu\u00f4n v\u00e0n kh\u00f3 kh\u0103n. \u0110\u1ec3 gi\u00fap cho h\u1ecd &#8220;nh\u00ecn th\u1ea5y&#8221; \u0111\u1ed3 v\u1eadt, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 ph\u00e1t minh ra nhi\u1ec1u lo\u1ea1i m\u1eaft \u0111i\u1ec7n t\u1eed c\u00f3 t\u00e1c d\u1ee5ng [&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-5880","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\/5880","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=5880"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5880\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5880"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5880"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5880"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}