M\u00e1y quay \u0111\u0129a c\u1ee7a Edison tr\u1ea3i qua c\u1ea3i ti\u1ebfn kh\u00f4ng ng\u1eebng m\u1edbi tr\u1edf th\u00e0nh m\u00e1y h\u00e1t \u0111i\u1ec7n ph\u1ed5 th\u00f4ng. N\u00f3 do m\u00f4t\u01a1, m\u00e2m xoay, b\u1ed9 ph\u1eadn thu \u00e2m v\u00e0 b\u1ed9 ph\u1eadn ph\u00e1t \u00e2m h\u1ee3p th\u00e0nh. Khi s\u1eed d\u1ee5ng, \u0111\u1eb7t \u0111\u0129a h\u00e1t l\u00ean m\u00e2m xoay, cho m\u00f4 t\u01a1 ch\u1ea1y l\u00f4i theo m\u00e2m xoay v\u00e0 \u0111\u0129a h\u00e1t c\u00f9ng quay v\u1edbi t\u1ed1c \u0111\u1ed9 \u0111\u1ec1u, r\u1ed3i nh\u00e8 nh\u1eb9 \u0111\u1eb7t b\u1ed9 ph\u1eadn thu \u00e2m l\u00ean \u0111\u0129a h\u00e1t. Tr\u00ean \u0111\u0129a h\u00e1t c\u00f3 nh\u1eefng \u0111\u01b0\u1eddng r\u00e3nh ghi \u00e2m ch\u1ea1y t\u1eebng v\u00f2ng t\u1eebng v\u00f2ng. Tr\u00ean b\u1ed9 ph\u1eadn thu \u00e2m c\u00f3 m\u1ed9t c\u00e1i kim h\u00e1t. Kim n\u00e0y ch\u1ea1y trong \u0111\u01b0\u1eddng r\u00e3nh \u0111\u0129a h\u00e1t, theo s\u1ef1 bi\u1ebfn \u0111\u1ed5i c\u1ee7a \u0111\u01b0\u1eddng r\u00e3nh m\u00e0 sinh ra dao \u0111\u1ed9ng. Lo\u1ea1i dao \u0111\u1ed9ng n\u00e0y th\u00f4ng qua b\u1ed9 ph\u1eadn thu \u00e2m chuy\u1ec3n th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n. Qua s\u1ef1 khu\u1ebfch \u0111\u1ea1i c\u1ee7a b\u1ed9 ph\u1eadn ph\u00e1t \u00e2m, \u00e2m thanh ghi trong \u0111\u0129a h\u00e1t li\u1ec1n t\u1eeb trong loa ph\u00e1t ra.<\/p>\n\n\n\n
D\u00f9ng laze \u0111\u1ec3 \u0111\u0129a h\u00e1t ph\u00e1t \u00e2m thanh, nguy\u00ean l\u00ed c\u1ee7a n\u00f3 r\u1ea5t gi\u1ed1ng v\u1edbi m\u00e1y h\u00e1t th\u00f4ng th\u01b0\u1eddng. Song \u0111\u0129a h\u00e1t v\u00e0 b\u1ed9 ph\u1eadn thu \u00e2m c\u1ee7a ch\u00fang l\u1ea1i r\u1ea5t kh\u00e1c nhau. \u0110\u01b0\u1eddng r\u00e3nh c\u1ee7a \u0111\u0129a h\u00e1t ph\u1ed5 th\u00f4ng r\u1ea5t th\u00f4, l\u01b0\u1ee3ng th\u00f4ng tin c\u00f3 th\u1ec3 ghi \u0111\u01b0\u1ee3c r\u1ea5t \u00edt. C\u00f2n khi ch\u1ebf t\u00e1c \u0111\u0129a h\u00e1t laze, t\u1eadp trung tia laze v\u00e0o m\u1ed9t \u0111i\u1ec3m kh\u00f4ng \u0111\u1ebfn 1 micron, \u0111\u1ed3ng th\u1eddi chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u00e2m thanh th\u00e0nh m\u1eadt m\u00e3 b\u1eb1ng s\u1ed1, \u0111i\u1ec1u khi\u1ec3n ch\u00f9m laze kh\u1eafc ra t\u1eebng v\u00f2ng t\u1eebng v\u00f2ng tr\u00ean \u0111\u0129a m\u1ecfng kim lo\u1ea1i \u0111\u1ea1i di\u1ec7n cho v\u1ebft kh\u1eafc 0 ho\u1eb7c 1. Lo\u1ea1i \u0111\u01b0\u1eddng r\u00e3nh n\u00e0y ch\u1ec9 r\u1ed9ng c\u00f3 0,4 micron, s\u00e2u v\u00e0o kho\u1ea3ng 1 micron, kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng r\u00e3nh ch\u1ec9 c\u00f3 1,7 micron, \u0111\u1ea1i \u0111\u1ec3 b\u1eb1ng 1\/40 c\u1ee7a s\u1ee3i t\u00f3c. \u0110\u0129a h\u00e1t \u0111\u01b0\u1ee3c l\u00e0m ra b\u1eb1ng c\u00e1ch n\u00e0y, nh\u00ecn kh\u00f4ng th\u1ea5y \u0111\u01b0\u1ee3c tr\u00ean m\u1eb7t c\u00f3 \u0111\u01b0\u1eddng r\u00e3nh v\u00e0 v\u1ebft kh\u1eafc. Nh\u00ecn xuy\u00ean qua m\u00e0ng b\u1ea3o v\u1ec7 b\u1eb1ng ch\u1ea5t d\u1ebbo mong m\u1ecfng ph\u1ee7 l\u00ean b\u1ec1 m\u1eb7t c\u1ee7a \u0111\u0129a h\u00e1t th\u00ec th\u1ea5y \u00e1nh s\u00e1ng nhi\u1ec1u m\u00e0u h\u1eaft l\u00ean r\u1ef1c r\u1ee1 kh\u00e1c th\u01b0\u1eddng. Mu\u1ed1n quan s\u00e1t \u0111\u01b0\u1eddng r\u00e3nh v\u00e0 v\u1ebft kh\u1eafc c\u1ee7a n\u00f3 ph\u1ea3i d\u00f9ng \u0111\u1ebfn k\u00ednh hi\u1ec3n vi.<\/p>\n\n\n\n
Tr\u00ean m\u1eb7t \u0111\u0129a h\u00e1t laze, tr\u00ean di\u1ec7n t\u00edch c\u00f3 k\u00edch th\u01b0\u1edbc c\u1ee1 \u0111\u1ea7u nh\u1ecdn c\u1ee7a kim h\u00e1t \u0111\u00e3 c\u00f3 h\u00e0ng tr\u0103m h\u00e0ng ng\u00e0n v\u1ebft kh\u1eafc, d\u00f9ng kim h\u00e1t c\u1ed1 nhi\u00ean kh\u00f4ng sao nh\u1eadn ra \u0111\u01b0\u1ee3c, t\u1ea5t ph\u1ea3i s\u1eed d\u1ee5ng tia laze. T\u1ee5 \u0111i\u1ec3m tia laze l\u00ean b\u1ec1 m\u1eb7t c\u1ee7a m\u00e0ng kim lo\u1ea1i \u0111\u0129a h\u00e1t, kh\u1ea3 n\u0103ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u1ee7a m\u00e0ng kim lo\u1ea1i ch\u1ed7 c\u00f3 v\u1ebft kh\u1eafc v\u00e0 kh\u00f4ng c\u00f3 v\u1ebft kh\u1eafc r\u1ea5t kh\u00e1c nhau. Nh\u01b0 v\u1eady, khi \u0111\u0129a h\u00e1t b\u1eaft \u0111\u1ea7u quay, \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 x\u1ea3y ra bi\u1ebfn \u0111\u1ed5i theo t\u1eebng v\u1ebft kh\u1eafc m\u1ed9t, qua b\u00f3ng quang \u0111i\u1ec7n bi\u1ebfn th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n d\u1ea1ng s\u1ed1 do 0 v\u00e0 1 t\u1ed5 th\u00e0nh, r\u1ed3i l\u1ea1i th\u00f4ng qua \u0111i\u1ec3m s\u00f3ng, khu\u1ebfch \u0111\u1ea1i, ho\u00e0n nguy\u00ean th\u00e0nh t\u00edn hi\u1ec7u \u00e2m thanh ban \u0111\u1ea7u. Th\u1ebf l\u00e0 c\u00f3 th\u1ec3 ph\u00e1t ra b\u1ea3n nh\u1ea1c du d\u01b0\u01a1ng t\u1eeb trong h\u1ec7 th\u1ed1ng \u00e2m h\u01b0\u1edfng.<\/p>\n\n\n\n
So v\u1edbi \u0111\u0129a h\u00e1t ph\u1ed5 th\u00f4ng, \u0111\u0129a h\u00e1t laze c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m \u0111\u1ed9c \u0111\u00e1o. Do \u0111\u01b0\u1eddng r\u00e3nh c\u1ee7a n\u00f3 r\u1ea5t nh\u1ecf, c\u00f3 th\u1ec3 ch\u1ee9a \u0111\u01b0\u1ee3c m\u1ed9t l\u01b0\u1ee3ng th\u00f4ng tin l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi \u0111\u0129a h\u00e1t ph\u1ed5 th\u00f4ng. M\u1ed9t \u0111\u0129a h\u00e1t \u0111\u01b0\u1eddng k\u00ednh 12 cm, c\u00f3 th\u1ec3 ph\u00e1t nh\u1ea1c \u00e2m thanh n\u1ed5i \u00eam tai trong m\u1ed9t gi\u1edd. N\u00f3 \u00e1p d\u1ee5ng k\u0129 thu\u1eadt s\u1ed1 ho\u00e1, ch\u1ebf t\u1ea1o th\u00e0nh \u0111\u0129a h\u00e1t \u00e2m thanh n\u1ed5i c\u00f3 \u0111\u1ed9 ch\u00e2n th\u1ef1c cao d\u1ea1ng s\u1ed1, \u0111\u1ed9 m\u00e9o v\u00f4 c\u00f9ng nh\u1ecf, h\u01a1n n\u1eefa h\u1ea7u nh\u01b0 kh\u00f4ng b\u1ecb m\u00e0i x\u01b0\u1edbc.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: M\u00e1y ph\u00e1t \u0111i\u1ec7n; \u0110\u0129a h\u00e1t; \u0110\u0129a h\u00e1t laze (CD), Laze; S\u1ed1 ho\u00e1.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
M\u00e1y quay \u0111\u0129a c\u1ee7a Edison tr\u1ea3i qua c\u1ea3i ti\u1ebfn kh\u00f4ng ng\u1eebng m\u1edbi tr\u1edf th\u00e0nh m\u00e1y h\u00e1t \u0111i\u1ec7n ph\u1ed5 th\u00f4ng. N\u00f3 do m\u00f4t\u01a1, m\u00e2m xoay, b\u1ed9 ph\u1eadn thu \u00e2m v\u00e0 b\u1ed9 ph\u1eadn ph\u00e1t \u00e2m h\u1ee3p th\u00e0nh. Khi s\u1eed d\u1ee5ng, \u0111\u1eb7t \u0111\u0129a h\u00e1t l\u00ean m\u00e2m xoay, cho m\u00f4 t\u01a1 ch\u1ea1y l\u00f4i theo m\u00e2m xoay v\u00e0 \u0111\u0129a h\u00e1t […]<\/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-5934","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\/5934","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=5934"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5934\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5934"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5934"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5934"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}