M\u00f4\u0323t va\u0300i n\u0103m tr\u01a1\u0309 la\u0323i \u0111\u00e2y, \u0111i\u0303a VCD pha\u0301t ha\u0300nh r\u00f4\u0323ng ra\u0303i va\u0300 tr\u01a1\u0309 n\u00ean quen thu\u00f4\u0323c v\u01a1\u0301i mo\u0323i ng\u01b0\u01a1\u0300i. Nhi\u0300n b\u00ea\u0300 ngoa\u0300i, \u0111i\u0303a VCD chi\u0309 la\u0300 m\u00f4\u0323t chi\u00ea\u0301c \u0111i\u0303a tro\u0300n nho\u0309, co\u0301 m\u00f4\u0323t m\u0103\u0323t a\u0301nh ba\u0323c, nh\u01b0ng ta\u0323i sao khi cho va\u0300o \u0111\u00e2\u0300u ma\u0301y VCD no\u0301 la\u0323i co\u0301 th\u00ea\u0309 pha\u0301t ra \u00e2m thanh va\u0300 hi\u0300nh a\u0309nh? M\u00f4\u0323t \u0111i\u0303a nho\u0309 la\u0300m sao co\u0301 th\u00ea\u0309 ch\u01b0\u0301a nhi\u00ea\u0300u hi\u0300nh a\u0309nh va\u0300 \u00e2m thanh \u0111\u00ea\u0301n th\u00ea\u0301?<\/p>\n\n\n\n
\u0110i\u0303a VCD la\u0300 m\u00f4\u0323t loa\u0323i \u0111i\u0303a nho\u0309, hi\u0300nh tro\u0300n, b\u00ean ngoa\u0300i co\u0301 m\u00f4\u0323t t\u00e2\u0300ng ba\u0309o v\u00ea\u0323 ch\u00e2\u0301t de\u0309o trong su\u00f4\u0301t, chi\u0323u nhi\u00ea\u0323t t\u00f4\u0301t, kh\u00f4ng d\u00ea\u0303 bi\u0323 v\u00eanh va\u0300 bi\u0323 x\u01b0\u01a1\u0301c. Tr\u00ean b\u00ea\u0300 m\u0103\u0323t a\u0301nh ba\u0323c cu\u0309a no\u0301 co\u0301 nhi\u00ea\u0300u \u0111\u01b0\u01a1\u0300ng v\u00e2n, \u0111o\u0301 la\u0300 nh\u01b0\u0303ng ra\u0303nh t\u01b0\u0300 \u0111\u01b0\u01a1\u0323c kh\u0103\u0301c b\u0103\u0300ng tia laze, \u0111\u00f4\u0323 r\u00f4\u0323ng chi\u0309 co\u0301 0,4 micr\u00f4me\u0301t, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u01a1\u0301i 1\/200 \u0111\u01b0\u01a1\u0300ng ki\u0301nh s\u01a1\u0323i to\u0301c; khoa\u0309ng ca\u0301ch gi\u01b0\u0303a ca\u0301c ra\u0303nh cu\u0303ng kh\u00f4ng \u0111\u00ea\u0301n 1\/50 \u0111\u01b0\u01a1\u0300ng ki\u0301nh s\u01a1\u0323i to\u0301c. Trong nh\u01b0\u0303ng ra\u0303nh t\u01b0\u0300 na\u0300y co\u0301 ch\u01b0\u0301a nhi\u00ea\u0300u th\u00f4ng tin v\u00ea\u0300 hi\u0300nh a\u0309nh va\u0300 \u00e2m thanh.<\/p>\n\n\n\n
Khi \u0111i\u0303a \u0111\u01b0\u01a1\u0323c cho va\u0300o \u0111\u00e2\u0300u VCD, trong \u0111\u00e2\u0300u VCD co\u0301 m\u00f4\u0323t m\u0103\u0301t t\u01b0\u0300 gi\u00f4\u0301ng nh\u01b0 chu\u0300m laze, khi \u0111i\u0303a VCD \u0111\u01b0\u01a1\u0323c xoay tro\u0300n t\u01b0\u0300 vo\u0300ng trong ra vo\u0300ng ngoa\u0300i, chu\u0300m laze (m\u0103\u0301t t\u01b0\u0300) se\u0303 chi\u00ea\u0301u ro\u0323i va\u0300o ca\u0301c ra\u0303nh t\u01b0\u0300 tr\u00ean \u0111i\u0303a VCD va\u0300 thay \u0111\u00f4\u0309i t\u00e2\u0300n s\u00f4\u0301 t\u01b0\u01a1ng \u01b0\u0301ng v\u01a1\u0301i s\u01b0\u0323 thay \u0111\u00f4\u0309i t\u00e2\u0300n s\u00f4\u0301 cu\u0309a ca\u0301c ti\u0301n hi\u00ea\u0323u tr\u00ean ra\u0303nh t\u01b0\u0300, ca\u0301c th\u00f4ng tin v\u00ea\u0300 hi\u0300nh a\u0309nh va\u0300 \u00e2m thanh se\u0303 \u0111\u01b0\u01a1\u0323c chu\u0300m laze ma\u0303 ho\u0301a tha\u0300nh ca\u0301c ti\u0301n hi\u00ea\u0323u \u0111i\u00ea\u0323n d\u01b0\u01a1\u0301i ca\u0301c t\u00e2\u0300n s\u00f4\u0301 \u00e2m va\u0300 t\u00e2\u0300n s\u00f4\u0301 d\u01b0\u01a1ng va\u0300 chuy\u00ea\u0309n va\u0300o tivi. Ca\u0301c ti\u0301n hi\u00ea\u0323u \u0111i\u00ea\u0323n co\u0301 t\u00e2\u0300n s\u00f4\u0301 d\u01b0\u01a1ng \u0111\u01b0\u01a1\u0323c que\u0301t tha\u0300nh hi\u0300nh a\u0309nh va\u0300 pho\u0301ng l\u00ean ma\u0300n hi\u0300nh, co\u0300n ca\u0301c ti\u0301n hi\u00ea\u0323u co\u0301 t\u00e2\u0300n s\u00f4\u0301 \u00e2m \u0111\u01b0\u01a1\u0323c b\u00f4\u0323 vi x\u01b0\u0309 ly\u0301 trong tivi ta\u0301i ta\u0323o tha\u0300nh \u00e2m thanh va\u0300 khu\u00ea\u0301ch \u0111a\u0323i sau \u0111o\u0301 pha\u0301t ra loa cu\u0309a tivi.<\/p>\n\n\n\n
Ca\u0301c ra\u0303nh t\u01b0\u0300 tr\u00ean m\u0103\u0323t \u0111i\u0303a co\u0301 th\u00ea\u0309 bi\u0323 nhi\u00ea\u0323t \u0111\u00f4\u0323 cao cu\u0309a chu\u0300m tia laze \u0103n mo\u0300n, ta\u0323o tha\u0300nh ca\u0301c ra\u0303nh nho\u0309 co\u0301 \u0111\u00f4\u0323 n\u00f4ng s\u00e2u kha\u0301c nhau. \u0110\u00ea\u0301n m\u00f4\u0323t lu\u0301c na\u0300o \u0111o\u0301 l\u01a1\u0301p t\u01b0\u0300 trong ca\u0301c ra\u0303nh nho\u0309 na\u0300y se\u0303 m\u00e2\u0301t \u0111i, \u0111i\u0303a VCD \u0111o\u0301 kh\u00f4ng s\u01b0\u0309 du\u0323ng \u0111\u01b0\u01a1\u0323c n\u01b0\u0303a. Do ca\u0301c ra\u0303nh t\u01b0\u0300 tr\u00ean \u0111i\u0303a VCD v\u00f4 cu\u0300ng nho\u0309, l\u01b0u gi\u01b0\u0303 hoa\u0300n chi\u0309nh m\u00f4\u0323t l\u01b0\u01a1\u0323ng th\u00f4ng tin r\u00e2\u0301t l\u01a1\u0301n v\u00ea\u0300 \u00e2m thanh va\u0300 hi\u0300nh a\u0309nh, vi\u0300 v\u00e2\u0323y mu\u00f4\u0301n hi\u0300nh a\u0309nh va\u0300 \u00e2m thanh cu\u0309a \u0111i\u0303a co\u0301 ch\u00e2\u0301t l\u01b0\u01a1\u0323ng cao thi\u0300 trong qua\u0301 tri\u0300nh s\u01b0\u0309 du\u0323ng pha\u0309i ba\u0309o qua\u0309n \u0111i\u0303a t\u00f4\u0301t. Kh\u00f4ng \u0111\u01b0\u01a1\u0323c xoa tay l\u00ean m\u0103\u0323t a\u0301nh ba\u0323c cu\u0309a \u0111i\u0303a va\u0300 \u0111\u00ea\u0309 v\u00e2\u0323t c\u01b0\u0301ng la\u0300m x\u01b0\u01a1\u0301c \u0111i\u0303a, kh\u00f4ng \u0111\u01b0\u01a1\u0323c \u0111\u00ea\u0309 r\u01a1i v\u01a1\u0303 \u0111i\u0303a\u2026 vi\u0300 nh\u01b0 v\u00e2\u0323y se\u0303 la\u0300m ho\u0309ng ca\u0301c ra\u0303nh t\u01b0\u0300 tr\u00ean m\u0103\u0323t \u0111i\u0303a, khi \u0111o\u0301 m\u0103\u0301t t\u01b0\u0300 se\u0303 kh\u00f4ng \u0111o\u0323c \u0111\u01b0\u01a1\u0323c chi\u0301nh xa\u0301c ca\u0301c th\u00f4ng tin v\u00ea\u0300 \u00e2m thanh va\u0300 hi\u0300nh a\u0309nh trong ca\u0301c ra\u0303nh t\u01b0\u0300 na\u0300y.<\/p>\n","protected":false},"excerpt":{"rendered":"
M\u00f4\u0323t va\u0300i n\u0103m tr\u01a1\u0309 la\u0323i \u0111\u00e2y, \u0111i\u0303a VCD pha\u0301t ha\u0300nh r\u00f4\u0323ng ra\u0303i va\u0300 tr\u01a1\u0309 n\u00ean quen thu\u00f4\u0323c v\u01a1\u0301i mo\u0323i ng\u01b0\u01a1\u0300i. Nhi\u0300n b\u00ea\u0300 ngoa\u0300i, \u0111i\u0303a VCD chi\u0309 la\u0300 m\u00f4\u0323t chi\u00ea\u0301c \u0111i\u0303a tro\u0300n nho\u0309, co\u0301 m\u00f4\u0323t m\u0103\u0323t a\u0301nh ba\u0323c, nh\u01b0ng ta\u0323i sao khi cho va\u0300o \u0111\u00e2\u0300u ma\u0301y VCD no\u0301 la\u0323i co\u0301 th\u00ea\u0309 pha\u0301t ra \u00e2m thanh va\u0300 […]<\/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":[1,15],"tags":[],"class_list":["post-11286","post","type-post","status-publish","format-standard","hentry","category-general","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/11286","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=11286"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/11286\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=11286"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=11286"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=11286"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}