Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
Ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd 9 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn r\u1ea5t nhi\u1ec1u hi\u1ec7n t\u01b0\u1ee3ng hay v\u00e0 th\u00fa v\u1ecb. Hai trong s\u1ed1 \u0111\u00f3 c\u00f3 th\u1ec3 k\u1ec3 \u0111\u1ebfn ch\u00ednh l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o. \u0110\u00e2y l\u00e0 hai hi\u1ec7n t\u01b0\u1ee3ng ph\u1ed5 bi\u1ebfn, hay g\u1eb7p trong \u0111\u1eddi s\u1ed1ng hi\u1ec7n \u0111\u1ea1i nh\u01b0ng nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn ch\u01b0a hi\u1ec3u bi\u1ebft r\u00f5 r\u00e0ng. N\u1ebfu nh\u01b0 b\u1ea1n mu\u1ed1n t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 th\u00f4ng tin n\u00e0y, c\u00f9ng \u0111\u1ecdc ti\u1ebfp b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y c\u1ee7a ch\u00fang t\u00f4i nh\u00e9. Chia s\u1ebb v\u1ec1 c\u1eadn th\u1ecb, l\u00e3o th\u1ecb \u0111eo k\u00ednh g\u00ec\u2026 ch\u1eafc ch\u1eafn s\u1ebd \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi quan t\u00e2m \u0111\u1ebfn. C\u00f9ng b\u1eaft \u0111\u1ea7u ngay th\u00f4i.<\/p>\n\n\n\n
M\u1eaft c\u1eadn l\u00e0 g\u00ec b\u1ea1n c\u00f3 bi\u1ebft<\/p>\n\n\n\n
M\u1eaft c\u1eadn \u2013 th\u00f4ng tin v\u1ec1 m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o<\/p>\n\n\n\n
M\u1eaft c\u1eadn l\u00e0 g\u00ec?<\/p>\n\n\n\n
M\u1eaft c\u1eadn hay c\u00f2n g\u1ecdi l\u00e0 c\u1eadn th\u1ecb. \u0110\u00e2y l\u00e0 m\u1ed9t t\u1eadt kh\u00fac x\u1ea1 r\u1ea5t th\u01b0\u1eddng g\u1eb7p \u1edf m\u1eaft. Nh\u1eefng ng\u01b0\u1eddi b\u1ecb c\u1eadn th\u1ecb th\u01b0\u1eddng g\u1eb7p kh\u00f3 kh\u0103n \u0111\u1ed1i v\u1edbi vi\u1ec7c ph\u1ea3i nh\u00ecn, ghi nh\u1eadn c\u00e1c th\u00f4ng tin, h\u00ecnh \u1ea3nh \u1edf xa. H\u1ecd lu\u00f4n ph\u1ea3i \u0111i\u1ec1u ti\u1ebft \u0111\u1ec3 m\u1eaft c\u00f3 th\u1ec3 th\u1ea5y r\u00f5. Ho\u1ea1t \u0111\u1ed9ng \u0111i\u1ec1u ti\u1ebft n\u00e0y \u0111\u01b0\u1ee3c b\u1ed9c l\u1ed9 r\u00f5 r\u00e0ng th\u00f4ng qua vi\u1ec7c nheo m\u1eaft. C\u00f3 th\u1ec3 th\u1ea5y, \u0111\u1ed1i v\u1edbi m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o th\u00ec m\u1eaft c\u1eadn l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng th\u01b0\u1eddng th\u1ea5y nh\u1ea5t. Ch\u00fang r\u1ea5t hay g\u1eb7p \u1edf l\u1ee9a tu\u1ed5i thanh thi\u1ebfu ni\u00ean, nh\u1eefng ng\u01b0\u1eddi \u0111ang \u0111i h\u1ecdc.<\/p>\n\n\n\n
\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a c\u1eadn th\u1ecb?<\/p>\n\n\n\n
Bi\u1ec3u hi\u1ec7n c\u1ee7a c\u1eadn th\u1ecb r\u1ea5t d\u1ec5 hi\u1ec3u. \u0110i\u1ec3m c\u1ef1c vi\u1ec5n c\u1ee7a m\u1eaft c\u1eadn s\u1ebd \u1edf g\u1ea7n h\u01a1n so v\u1edbi m\u1eaft b\u00ecnh th\u01b0\u1eddng. \u0110\u1ed9 c\u1eadn diop \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng ph\u00e9p t\u00ednh 1\/OCv. \u0110\u1ed1i v\u1edbi m\u1eaft b\u00ecnh th\u01b0\u1eddng, \u0111i\u1ec3m c\u1ef1c vi\u1ec5n l\u00e0 \u1edf v\u00f4 c\u1ef1c, c\u00f2n \u0111i\u1ec3m c\u1ef1c c\u1eadn r\u01a1i v\u00e0o kho\u1ea3ng 5cm.<\/p>\n\n\n\n
M\u1eaft \u0111\u00f3ng vai tr\u00f2 v\u00f4 c\u00f9ng quan tr\u1ecdng. Ch\u00fang l\u00e0 m\u1ed9t th\u1ea5u k\u00ednh h\u1ed9i t\u1ee5, c\u00f3 kh\u1ea3 n\u0103ng h\u1ee9ng \u0111\u01b0\u1ee3c \u1ea3nh l\u00ean tr\u00ean v\u00f5ng m\u1ea1c. Th\u00f4ng qua nhi\u1ec1u t\u1ebf b\u00e0o th\u1ee5 c\u1ea3m v\u00e0 t\u1ebf b\u00e0o th\u1ea7n kinh, n\u00e3o b\u1ed9 s\u1ebd nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c h\u00ecnh \u1ea3nh. Thay v\u00ec n\u1eb1m trong v\u00f5ng m\u1ea1c, \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt th\u00f4ng qua th\u1ea5u k\u00ednh c\u1ee7a m\u1eaft s\u1ebd n\u1eb1m \u1edf tr\u01b0\u1edbc v\u00f5ng m\u1ea1c.<\/p>\n\n\n\n
D\u1ea5u hi\u1ec7u c\u1ee7a m\u1eaft c\u1eadn?<\/p>\n\n\n\n
Nh\u1eefng ng\u01b0\u1eddi b\u1ecb c\u1eadn th\u1ecb th\u01b0\u1eddng c\u00f3 nhi\u1ec1u d\u1ea5u hi\u1ec7u kh\u00e1c nhau. Nh\u1eefng d\u1ea5u hi\u1ec7u n\u00e0y g\u00e2y n\u00ean l\u00e0 t\u1eeb m\u1ed9t s\u1ed1 nguy\u00ean nh\u00e2n d\u01b0\u1edbi \u0111\u00e2y. C\u00f3 m\u1ed9t s\u1ed1 nguy\u00ean nh\u00e2n t\u01b0\u01a1ng \u0111\u1ed3ng gi\u1eefa m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o. Th\u1ebf nh\u01b0ng c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 nguy\u00ean nh\u00e2n l\u00e0 kh\u00e1c.<\/p>\n\n\n\n
S\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng gi\u1eefa chi\u1ec1u d\u00e0i c\u1ee7a tr\u1ee5c nh\u00e3n c\u1ea7u v\u1edbi c\u00f4ng su\u1ea5t kh\u00fac x\u1ea1 c\u1ee7a m\u1eaft \u0111\u01b0\u1ee3c cho l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh. B\u1edfi th\u1ebf, ch\u00fang c\u00f3 th\u1ec3 h\u00ecnh th\u00e0nh do tr\u1ee5c nh\u00e3n c\u1ea7u d\u00e0i. \u0110i\u1ec1u n\u00e0y khi\u1ebfn cho kho\u1ea3ng c\u00e1ch \u0111\u1ebfn v\u00f5ng m\u1ea1c b\u1ecb l\u00e0m d\u00e0i ra. Th\u1ebf n\u00ean \u1ea3nh kh\u00f3 r\u01a1i \u0111\u01b0\u1ee3c v\u00e0o \u0111\u00fang v\u00f5ng m\u1ea1c. Vi\u1ec7c thay \u0111\u1ed5i c\u1ea5u tr\u00fac hay \u0111\u1ed9 cong c\u1ee7a nh\u00e3n c\u1ea7u c\u0169ng l\u00e0 m\u1ed9t nguy\u00ean nh\u00e2n t\u01b0\u01a1ng t\u1ef1. Trong m\u1ed9t s\u1ed1 b\u1ec7nh gi\u00e1c m\u1ea1c, th\u1ec3 th\u1ee7y tinh cong trong th\u1ec3 th\u1ee7y tinh ch\u00f3p sau v\u00e0 ch\u00f3p tr\u01b0\u1edbc.<\/p>\n\n\n\n
Kh\u00f4ng ch\u1ec9 c\u00f3 v\u1eady, vi\u1ec7c \u0111\u1ecdc s\u00e1ch, xem m\u00e1y t\u00ednh, tivi v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed qu\u00e1 nhi\u1ec1u c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c m\u1eaft lu\u00f4n ph\u1ea3i \u0111i\u1ec1u ti\u1ebft. T\u1eeb \u0111\u00f3 g\u00e2y ra vi\u1ec7c c\u1eadn th\u1ecb cho m\u1eaft. T\u01b0 th\u1ebf h\u1ecdc t\u1eadp<\/a>, \u0111\u1ecdc vi\u1ebft c\u0169ng lu\u00f4n ph\u1ea3i chu\u1ea9n. Nh\u01b0 th\u1ebf m\u1edbi kh\u00f4ng d\u1ec5 b\u1ecb c\u1eadn.<\/p>\n\n\n\n C\u00e1ch kh\u1eafc ph\u1ee5c m\u1eaft c\u1eadn<\/p>\n\n\n\n C\u00e1ch kh\u1eafc ph\u1ee5c m\u1eaft c\u1eadn kh\u00f4ng c\u00f3 g\u00ec qu\u00e1 kh\u00f3 kh\u0103n. \u0110\u1ea7u ti\u00ean, c\u1ea7n ph\u1ea3i l\u00e0m ph\u1eabu thu\u1eadt gi\u00e1c m\u1ea1c \u0111\u1ec3 c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u01b0\u1ee3c \u0111\u1ed9 cong c\u1ee7a gi\u00e1c m\u1ea1c. Ngo\u00e0i ra, c\u00f3 c\u00e1ch kh\u00e1c, v\u00ed d\u1ee5 nh\u01b0 \u0111eo k\u00ednh c\u1eadn \u0111\u1ec3 gi\u00fap m\u1eaft nh\u00ecn r\u00f5 nh\u1eefng v\u1eadt \u1edf xa. K\u00ednh c\u1eadn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 th\u1ea5u k\u00ednh ph\u00e2n k\u1ef3, v\u1edbi r\u00eca d\u00e0y v\u00e0 trung t\u00e2m m\u1ecfng. Nh\u1eefng chi\u1ebfc k\u00ednh c\u1eadn n\u00e0y th\u00edch h\u1ee3p v\u1edbi ti\u00eau \u0111i\u1ec3m F, tr\u00f9ng v\u1edbi \u0111i\u1ec3m c\u1ef1c vi\u1ec5n c\u1ee7a m\u1eaft.<\/p>\n\n\n\n M\u1eaft l\u00e3o lu\u00f4n ph\u1ea3i nh\u00ecn xa<\/p>\n\n\n\n M\u1eaft l\u00e3o \u2013 th\u00f4ng tin v\u1ec1 m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o<\/p>\n\n\n\n M\u1eaft l\u00e3o l\u00e0 g\u00ec?<\/p>\n\n\n\n M\u1eaft l\u00e3o hay c\u00f2n g\u1ecdi l\u00e0 l\u00e3o th\u1ecb. \u0110\u00e2y l\u00e0 m\u1ed9t t\u1eadt v\u1ec1 m\u1eaft, r\u1ea5t th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n khi tu\u1ed5i gi\u00e0 \u0111\u1ebfn. Ng\u01b0\u1eddi l\u1edbn tu\u1ed5i c\u00e0ng cao, th\u1ee7y tinh th\u1ec3 s\u1ebd c\u00e0ng k\u00e9m \u0111\u00e0n h\u1ed3i. Nh\u1eefng ng\u01b0\u1eddi d\u1ec5 m\u1eafc c\u00e1c t\u1eadt v\u1ec1 l\u00e3o th\u1ecb nh\u1ea5t th\u01b0\u1eddng \u1edf \u0111\u1ed9 tu\u1ed5i t\u1eeb 40 \u0111\u1ebfn 60.<\/p>\n\n\n\n Nh\u1eafc \u0111\u1ebfn m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng th\u1ea5u k\u00ednh \u0111\u1ec3 s\u1eed d\u1ee5ng kh\u00f4ng gi\u1ed1ng nhau. Nhi\u1ec1u ng\u01b0\u1eddi ph\u00e2n v\u00e2n kh\u00f4ng bi\u1ebft \u0111\u1ec3 kh\u1eafc ph\u1ee5c t\u1eadt l\u00e3o th\u1ecb n\u00ean \u0111eo k\u00ednh g\u00ec cho ph\u00f9 h\u1ee3p. Ng\u01b0\u1eddi m\u1eaft l\u00e3o n\u00ean l\u1ef1a ch\u1ecdn m\u1ed9t th\u1ea5u k\u00ednh l\u1ed3i c\u00f3 diop chu\u1ea9n v\u1edbi m\u1eaft c\u1ee7a m\u00ecnh. N\u1ebfu tu\u1ed5i t\u00e1c c\u00e0ng cao, \u0111\u1ed9 l\u00e3o th\u1ecb c\u00e0ng t\u0103ng. Th\u00ec m\u1eaft l\u00e3o \u0111eo th\u1ea5u k\u00ednh g\u00ec s\u1ebd ph\u1ea3i c\u00e0ng l\u1ed3i h\u01a1n so v\u1edbi tr\u01b0\u1edbc.<\/p>\n\n\n\n \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a m\u1eaft l\u00e3o?<\/p>\n\n\n\n So s\u00e1nh m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng ch\u00fang c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 r\u1ec7t. \u0110i\u1ec3m c\u1ef1c c\u1eadn c\u1ee7a m\u1eaft l\u00e3o s\u1ebd xa h\u01a1n so v\u1edbi m\u1eaft c\u1ee7a nh\u1eefng ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng. M\u1eaft l\u00e3o c\u00f3 th\u1ec3 nh\u00ecn r\u00f5 nh\u1eefng v\u1eadt \u1edf ph\u00eda xa. Th\u1ebf nh\u01b0ng \u0111\u1ed1i v\u1edbi nh\u1eefng v\u1eadt g\u1ea7n, m\u1eaft l\u00e3o s\u1ebd kh\u00f4ng nh\u00ecn r\u00f5 nh\u01b0 h\u1ed3i tr\u1ebb. M\u1eaft l\u00e3o l\u00e0 m\u1eaft \u0111\u1eb7c bi\u1ec7t, ch\u1ec9 ng\u01b0\u1eddi gi\u00e0 m\u1edbi c\u00f3.<\/p>\n\n\n\n D\u1ea5u hi\u1ec7u c\u1ee7a m\u1eaft l\u00e3o?<\/p>\n\n\n\n M\u1eaft l\u00e3o c\u00f3 r\u1ea5t nhi\u1ec1u d\u1ea5u hi\u1ec7u kh\u00e1c nhau. Bi\u1ec3u hi\u1ec7n c\u1ee7a m\u1eaft l\u00e3o l\u00e0 m\u1ecdi ng\u01b0\u1eddi s\u1ebd kh\u00f4ng nh\u00ecn th\u1ea5y r\u00f5 v\u00e2n tay, c\u00e1c chi ti\u1ebft \u1edf trong t\u1ea7m tay. N\u1ebfu mu\u1ed1n nh\u00ecn th\u1ea5y r\u00f5, vi\u1ec7c l\u00e0m c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i \u0111\u01b0a m\u1eaft ra xa h\u01a1n, c\u00f3 nhi\u1ec1u \u00e1nh s\u00e1ng h\u01a1n. Ngo\u00e0i ra m\u1eaft ph\u1ea3i nheo l\u1ea1i \u0111\u1ec3 c\u00f3 th\u1ec3 nh\u00ecn cho r\u00f5\u2026<\/p>\n\n\n\n Ng\u01b0\u1eddi b\u1ecb m\u1eaft l\u00e3o s\u1ebd kh\u00f3 c\u00f3 th\u1ec3 nh\u00ecn r\u00f5 trong \u00e1nh s\u00e1ng m\u1edd. T\u1eeb \u0111\u1ed9 tu\u1ed5i 40 \u0111\u1ebfn 50 tu\u1ed5i, h\u1ecd s\u1ebd g\u1eb7p v\u1ea5n \u0111\u1ec1 n\u1ebfu nh\u00ecn v\u00e0o nh\u1eefng v\u1eadt th\u1ec3 nh\u1ecf, ho\u1eb7c c\u00e1c d\u00f2ng ch\u1eef nh\u1ecf.<\/p>\n\n\n\n Vi\u1ec7c ph\u1ea3i \u0111\u1ecdc s\u00e1ch hay ng\u1ed3i nh\u00ecn m\u00e1y t\u00ednh l\u00e2u s\u1ebd v\u00f4 c\u00f9ng kh\u00f3 ch\u1ecbu v\u1edbi ng\u01b0\u1eddi b\u1ecb m\u1eaft l\u00e3o. H\u1ecd s\u1ebd th\u01b0\u1eddng xuy\u00ean c\u1ea3m th\u1ea5y nh\u1ee9c \u0111\u1ea7u, ch\u1ea3y n\u01b0\u1edbc m\u1eaft, m\u1ecfi m\u1eaft\u2026 \u0110\u00e2y l\u00e0 \u0111i\u1ec1u t\u01b0\u01a1ng \u0111\u1ed3ng gi\u1eefa m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o.<\/p>\n\n\n\n Kh\u1ea3 n\u0103ng nh\u00ecn v\u1eadt th\u1ec3 \u1edf m\u1ee9c g\u1ea7n c\u00f3 th\u1ec3 b\u1ecb suy gi\u1ea3m theo tu\u1ed5i t\u00e1c \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng. M\u1ed9t \u0111\u1ee9a tr\u1ebb 10 tu\u1ed5i c\u00f3 kh\u1ea3 n\u0103ng nh\u00ecn \u1edf m\u1ee9c 50mm, hay c\u00f3 th\u1ec3 \u0111i\u1ec1u ti\u1ebft \u1edf kho\u1ea3ng 20 diop. Ng\u01b0\u1eddi \u1edf tu\u1ed5i 25 c\u00f3 kh\u1ea3 n\u0103ng nh\u00ecn \u1edf m\u1ee9c 100mm, hay \u0111i\u1ec1u ti\u1ebft \u1edf kho\u1ea3ng 10 diop. C\u00f2n ng\u01b0\u1eddi \u1edf tu\u1ed5i 60 s\u1ebd ch\u1ec9 c\u00f3 th\u1ec3 \u0111i\u1ec1u ti\u1ebft \u1edf m\u1ee9c 0,5 diop m\u00e0 th\u00f4i.<\/p>\n\n\n\n T\u00ecnh tr\u1ea1ng m\u1eaft l\u00e3o v\u00e0 m\u1eaft b\u00ecnh th\u01b0\u1eddng<\/p>\n\n\n\n C\u00e1ch kh\u1eafc ph\u1ee5c m\u1eaft l\u00e3o<\/p>\n\n\n\n Mu\u1ed1n nh\u00ecn r\u00f5 c\u00e1c v\u1eadt \u1edf g\u1ea7n th\u00ec m\u1eaft l\u00e3o ph\u1ea3i \u0111eo k\u00ednh. Nh\u01b0 \u0111\u00e3 n\u00f3i tr\u00ean, l\u00e3o th\u1ecb \u0111eo k\u00ednh h\u1ed9i t\u1ee5 \u0111\u1ec3 c\u00f3 th\u1ec3 nh\u00ecn \u0111\u01b0\u1ee3c r\u00f5 r\u00e0ng h\u01a1n. K\u00ednh m\u00e0 m\u1eaft l\u00e3o c\u1ea7n nh\u00ecn l\u00e0 k\u00ednh h\u1ed9i t\u1ee5. H\u00ecnh \u1ea3nh c\u1ee7a v\u1eadt khi qua k\u00ednh kh\u00f4ng l\u1edbn h\u01a1n so v\u1edbi h\u00ecnh \u1ea3nh m\u1eaft th\u01b0\u1eddng nh\u00ecn v\u1eadt.<\/p>\n\n\n\n B\u00e0i t\u1eadp v\u00e0 l\u1eddi gi\u1ea3i v\u1ec1 m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o<\/p>\n\n\n\n D\u01b0\u1edbi \u0111\u00e2y l\u00e0 gi\u1ea3i \u0111\u00e1p c\u00f9ng v\u1edbi b\u00e0i t\u1eadp \u0111i\u1ec3n h\u00ecnh v\u1ec1 m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o cho nh\u1eefng b\u1ea1n quan t\u00e2m. Vi\u1ec7c l\u00e0m b\u00e0i t\u1eadp nh\u01b0 th\u1ebf n\u00e0y c\u0169ng l\u00e0 c\u00e1ch \u0111\u1ec3 c\u00f3 th\u1ec3 c\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c<\/p>\n\n\n\n C\u00e2u h\u1ecfi v\u1ec1 m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o<\/p>\n\n\n\n C\u00e2u 1: Bi\u1ec3u hi\u1ec7n c\u1ee7a m\u1eaft c\u1eadn l\u00e0 g\u00ec:<\/p>\n\n\n\n A Kh\u00f4ng nh\u00ecn r\u00f5 \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt \u1edf g\u1ea7n m\u1eaft<\/p>\n\n\n\n B Nh\u00ecn r\u00f5 \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt \u1edf trong kho\u1ea3ng t\u1eeb \u0111i\u1ec3m c\u1ef1c c\u1eadn cho \u0111\u1ebfn \u0111i\u1ec3m c\u1ef1c vi\u1ec5n<\/p>\n\n\n\n C Nh\u00ecn r\u00f5 \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt \u1edf xa m\u1eaft, kh\u00f4ng nh\u00ecn r\u00f5 c\u00e1c v\u1eadt \u1edf g\u1ea7n m\u1eaft<\/p>\n\n\n\n D Ch\u1ec9 nh\u00ecn r\u00f5 \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt \u1edf g\u1ea7n m\u1eaft, c\u00f2n c\u00e1c v\u1eadt \u1edf xa m\u1eaft kh\u00f4ng nh\u00ecn r\u00f5.<\/p>\n\n\n\n C\u00e2u 2: Bi\u1ec3u hi\u1ec7n c\u1ee7a m\u1eaft l\u00e3o l\u00e0 g\u00ec?<\/p>\n\n\n\n A M\u1eaft l\u00e3o kh\u00f4ng nh\u00ecn r\u00f5 c\u00e1c v\u1eadt \u1edf xa m\u1eaft<\/p>\n\n\n\n B M\u1eaft l\u00e3o nh\u00ecn r\u00f5 \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt trong kho\u1ea3ng t\u1eeb c\u1ef1c c\u1eadn \u0111\u1ebfn c\u1ef1c vi\u1ec5n<\/p>\n\n\n\n C M\u1eaft l\u00e3o nh\u00ecn r\u00f5 \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt \u1edf xa m\u1eaft, kh\u00f4ng nh\u00ecn r\u00f5 \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt \u1edf g\u1ea7n m\u1eaft<\/p>\n\n\n\n D M\u1eaft l\u00e3o nh\u00ecn r\u00f5 c\u00e1c v\u1eadt \u1edf g\u1ea7n m\u1eaft, kh\u00f4ng nh\u00ecn r\u00f5 \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt \u1edf xa m\u1eaft.<\/p>\n\n\n\n \u0110\u00e1p \u00e1n v\u1ec1 m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o<\/p>\n\n\n\n \u0110\u1ed1i v\u1edbi nh\u1eefng c\u00e2u h\u1ecfi m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o n\u00e0y, \u0111\u00e1p \u00e1n kh\u00f4ng kh\u00f3 \u0111\u1ec3 t\u00ecm ra. C\u00e2u 1 c\u00f3 \u0111\u00e1p \u00e1n l\u00e0 \u0111\u00e1p \u00e1n D, c\u00e2u 2 c\u00f3 \u0111\u00e1p \u00e1n l\u00e0 \u0111\u00e1p \u00e1n C.<\/p>\n\n\n\n B\u00e0i t\u1eadp m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o<\/p>\n\n\n\n Tr\u00ean \u0111\u00e2y l\u00e0 nh\u1eefng th\u00f4ng tin m\u00e0 ch\u00fang t\u00f4i mang \u0111\u1ebfn cho b\u1ea1n v\u1ec1 m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o. Ch\u00fang t\u00f4i tin r\u1eb1ng nh\u1eefng chia s\u1ebb n\u00e0y s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u \u0111\u01b0\u1ee3c th\u00eam v\u1ec1 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a \u0111\u00f4i m\u1eaft n\u00e0y. H\u01a1n n\u1eefa, n\u1ebfu nh\u01b0 t\u1ed1t h\u01a1n, b\u1ea1n c\u00f3 th\u1ec3 t\u01b0 v\u1ea5n<\/a> cho nh\u1eefng ng\u01b0\u1eddi m\u1eafc t\u1eadt v\u1ec1 m\u1eaft l\u1ef1a ch\u1ecdn m\u1ed9t lo\u1ea1i k\u00ednh ph\u00f9 h\u1ee3p. \u0110\u1eebng qu\u00ean tham kh\u1ea3o tr\u00ean website c\u1ee7a ch\u00fang t\u00f4i nh\u1eefng b\u00e0i vi\u1ebft kh\u00e1c \u0111\u1ec3 c\u00f3 th\u00eam nhi\u1ec1u ki\u1ebfn th\u1ee9c v\u1eadt l\u00fd b\u1ea1n nh\u00e9. Th\u00f4ng tin v\u1ec1 th\u1ea5u k\u00ed<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":" Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd 9 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn r\u1ea5t nhi\u1ec1u hi\u1ec7n t\u01b0\u1ee3ng hay v\u00e0 th\u00fa v\u1ecb. Hai trong s\u1ed1 \u0111\u00f3 c\u00f3 th\u1ec3 k\u1ec3 \u0111\u1ebfn ch\u00ednh l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng m\u1eaft c\u1eadn v\u00e0 m\u1eaft l\u00e3o. \u0110\u00e2y l\u00e0 hai hi\u1ec7n t\u01b0\u1ee3ng ph\u1ed5 bi\u1ebfn, hay g\u1eb7p trong \u0111\u1eddi s\u1ed1ng hi\u1ec7n \u0111\u1ea1i nh\u01b0ng nhi\u1ec1u […]<\/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":[4,7],"tags":[],"class_list":["post-1185","post","type-post","status-publish","format-standard","hentry","category-trung-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1185","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=1185"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1185\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}