Mu\u1ed1n bi\u1ebft \u0111\u01b0\u1ee3c t\u00ecnh h\u00ecnh m\u01b0a gi\u00f4ng, b\u00e3o v\u00e0 gi\u00f3 l\u1ed1c \u1edf v\u00f9ng xa ta c\u00f3 th\u1ec3 d\u00f9ng ra\u0111a \u0111\u1ec3 th\u0103m d\u00f2.<\/p>\n\n\n\n
Ra\u0111a c\u00f3 th\u1ec3 ph\u00e1t ra s\u00f3ng v\u00f4 tuy\u1ebfn. \u0110\u00f3 l\u00e0 lo\u1ea1i s\u00f3ng ng\u1eafn ph\u00e1t ra t\u1eeb \u0103ngten. S\u00f3ng v\u00f4 tuy\u1ebfn n\u00e0y g\u1eb7p ph\u1ea3i gi\u00f3 l\u1ed1c, m\u01b0a gi\u00f4ng v\u00e0 b\u00e3o \u1edf nh\u1eefng v\u00f9ng tr\u1eddi xa x\u00f4i c\u00f3 th\u1ec3 ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i v\u00e0 hi\u1ec3n th\u1ecb c\u00e1c t\u00edn hi\u1ec7u tr\u00ean m\u00e0n \u1ea3nh ra\u0111a. V\u00ec v\u1eady t\u1eeb m\u00e0n \u1ea3nh ra\u0111a c\u00f3 th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c to\u00e0n b\u1ed9 b\u1ed9 m\u1eb7t v\u00e0 k\u1ebft c\u1ea5u c\u1ee7a gi\u00f3 l\u1ed1c, m\u01b0a gi\u00f4ng v\u00e0 c\u01a1n b\u00e3o. Gi\u1ea3 thi\u1ebft \u1edf v\u00f9ng A c\u00f3 m\u01b0a gi\u00f4ng, c\u00e1ch v\u00f9ng \u0111\u00f3 m\u1ea5y tr\u0103m km ta \u0111\u1eb7t ra\u0111a v\u00e0 m\u00e0n hu\u1ef3nh quang th\u00ec c\u00f3 th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c nh\u1eefng v\u1ebft s\u00e1ng v\u00e0 \u0111\u01b0\u1eddng s\u00e1ng kh\u00f4ng quy t\u1eafc tr\u00ean m\u00e0n h\u00ecnh, \u0111\u00f3 ch\u00ednh l\u00e0 \u1ea3nh c\u1ee7a ra\u0111a. T r\u00ean m\u00e0n \u1ea3nh c\u1ee7a ra\u0111a ng\u01b0\u1eddi ta v\u1ea1ch nh\u1eefng \u0111\u01b0\u1eddng c\u1ef1 ly th\u1ec3 hi\u1ec7n kho\u1ea3ng c\u00e1ch tr\u1eadn gi\u00f4ng c\u00e1ch bao xa. N\u1ebfu khu c\u00f3 m\u01b0a v\u00e0 m\u01b0a r\u1ea5t to th\u00ec di\u1ec7n t\u00edch nh\u1eefng v\u1ec7t s\u00e1ng ho\u1eb7c \u0111\u01b0\u1eddng s\u00e1ng tr\u00ean m\u00e0n h\u00ecnh c\u0169ng r\u1ea5t l\u1edbn v\u00e0 c\u00e0ng s\u00e1ng h\u01a1n. Ch\u1ec9 c\u1ea7n trong t\u1eebng kho\u1ea3ng th\u1eddi gian m\u1ed9t, ta quan s\u00e1t m\u1ea5y l\u1ea7n th\u00ec s\u1ebd t\u00ednh \u0111\u01b0\u1ee3c h\u01b0\u1edbng di chuy\u1ec3n v\u00e0 t\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u01a1n gi\u00f4ng. Nh\u01b0 v\u1eady s\u1ebd bi\u1ebft \u0111\u01b0\u1ee3c r\u00f5 r\u00e0ng trong v\u00f2ng m\u1ea5y ti\u1ebfng n\u1eefa ho\u1eb7c trong bao l\u00e2u n\u1eefa s\u1ebd c\u00f3 tr\u1eadn gi\u00f4ng l\u1edbn \u1eadp \u0111\u1ebfn. C\u01b0\u1eddng \u0111\u1ed9 m\u01b0a gi\u00f4ng v\u00e0 m\u01b0a b\u00ecnh th\u01b0\u1eddng kh\u00e1c nhau r\u1ea5t l\u1edbn. T h\u00f4ng qua v\u1ec7t s\u00e1ng tr\u00ean m\u00e0n h\u00ecnh ta c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n
Ngo\u00e0i ra k\u1ebft c\u1ea5u n\u1eb1m ngang v\u00e0 k\u1ebft c\u1ea5u th\u1eb3ng \u0111\u1ee9ng c\u1ee7a \u0111\u00e1m m\u00e2y gi\u00f4ng c\u0169ng c\u00f3 th\u1ec3 th\u00f4ng qua m\u00e0n h\u00ecnh ra\u0111a th\u1ec3 hi\u1ec7n ra.<\/p>\n\n\n\n
Trung t\u00e2m c\u01a1n l\u1ed1c v\u00e0 tr\u1ea1ng th\u00e1i m\u00e2y m\u01b0a chung quanh n\u00f3 \u0111\u1ec1u c\u00f3 th\u1ec3 th\u1ec3 hi\u1ec7n \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n ra\u0111a, ch\u1ec9 c\u1ea7n quan s\u00e1t \u0111\u1ecbnh k\u1ef3 m\u1ea5y l\u1ea7n l\u00e0 c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 v\u00e0 h\u01b0\u1edbng \u0111i c\u1ee7a c\u01a1n l\u1ed1c. C\u00f3 \u0111\u01b0\u1ee3c nh\u1eefng t\u01b0 li\u1ec7u qu\u00fd b\u00e1u n\u00e0y l\u00e0 c\u00f3 th\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c v\u1ecb tr\u00ed, c\u01b0\u1eddng \u0111\u1ed9, h\u01b0\u1edbng v\u00e0 t\u1ed1c \u0111\u1ed9 di chuy\u1ec3n m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c, t\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0a ra d\u1ef1 b\u00e1o c\u01a1n l\u1ed1c m\u1ed9t c\u00e1ch tin c\u1eady.<\/p>\n\n\n\n
T \u1eeb kho\u00e1: Ra\u0111a kh\u00ed t\u01b0\u1ee3ng.<\/p>\n","protected":false},"excerpt":{"rendered":"
Mu\u1ed1n bi\u1ebft \u0111\u01b0\u1ee3c t\u00ecnh h\u00ecnh m\u01b0a gi\u00f4ng, b\u00e3o v\u00e0 gi\u00f3 l\u1ed1c \u1edf v\u00f9ng xa ta c\u00f3 th\u1ec3 d\u00f9ng ra\u0111a \u0111\u1ec3 th\u0103m d\u00f2. Ra\u0111a c\u00f3 th\u1ec3 ph\u00e1t ra s\u00f3ng v\u00f4 tuy\u1ebfn. \u0110\u00f3 l\u00e0 lo\u1ea1i s\u00f3ng ng\u1eafn ph\u00e1t ra t\u1eeb \u0103ngten. S\u00f3ng v\u00f4 tuy\u1ebfn n\u00e0y g\u1eb7p ph\u1ea3i gi\u00f3 l\u1ed1c, m\u01b0a gi\u00f4ng v\u00e0 b\u00e3o \u1edf nh\u1eefng v\u00f9ng tr\u1eddi […]<\/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":[15,19],"tags":[],"class_list":["post-9997","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-tu-nhien"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9997","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=9997"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9997\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9997"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9997"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9997"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}