Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
\u0110\u1ebfn v\u1edbi ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd l\u1edbp 6, c\u00e1c em s\u1ebd \u0111\u01b0\u1ee3c h\u1ecdc v\u1ec1 nh\u1eefng chi\u1ebfc m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n. C\u00e1c em s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3u v\u1ec1 c\u1ea5u t\u1ea1o, c\u00e1ch s\u1eed d\u1ee5ng nh\u1eefng chi\u1ebfc m\u00e1y n\u00e0y. Th\u1ebf nh\u01b0ng, \u0111\u00e3 bao gi\u1edd c\u00e1c em t\u00f2 m\u00f2 v\u1ec1 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n ch\u01b0a? Ch\u00fang s\u1ebd gi\u00fap \u00edch \u0111\u01b0\u1ee3c g\u00ec trong cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta? B\u00e0i vi\u1ebft ng\u00e0y h\u00f4m nay, ch\u00fang ta s\u1ebd c\u00f9ng nhau t\u00ecm hi\u1ec3u v\u1ec1 c\u00e1c m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n l\u00e0 g\u00ec? V\u00e0 h\u01a1n c\u1ea3, ch\u00fang ta s\u1ebd \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a c\u00e1c lo\u1ea1i m\u00e1y n\u00e0y nh\u00e9!<\/p>\n\n\n\n
\u00dd ngh\u0129a c\u1ee7a nh\u1eefng chi\u1ebfc m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n?<\/p>\n\n\n\n
Trong th\u1ef1c t\u1ebf cu\u1ed9c s\u1ed1ng, ch\u00fang ta s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 h\u1ed7 tr\u1ee3 ho\u1ea1t \u0111\u1ed9ng. S\u1ebd c\u00f3 nhi\u1ec1u ng\u01b0\u1eddi th\u1eafc m\u1eafc t\u1ea1i sao ch\u00fang ta ph\u1ea3i s\u1eed d\u1ee5ng v\u00e0 ph\u00e1t minh ra m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n. M\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c ph\u00e1t minh \u0111\u1ec3 h\u1ed7 tr\u1ee3 cho nh\u1eefng c\u00f4ng vi\u1ec7c h\u00e0ng ng\u00e0y. V\u00ed d\u1ee5 nh\u01b0 k\u00e9o, ho\u1eb7c \u0111\u01b0a v\u1eadt l\u00ean cao.<\/p>\n\n\n\n
M\u00f4 h\u00ecnh \u0111\u00f2n b\u1ea9y<\/p>\n\n\n\n
N\u1ebfu ch\u00fang ta k\u00e9o v\u1eadt l\u00ean theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng, ch\u00fang ta c\u1ea7n \u00edt nh\u1ea5t m\u1ed9t l\u1ef1c b\u1eb1ng tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt. Ch\u00fang ta s\u1ebd g\u1eb7p r\u1ea5t nhi\u1ec1u kh\u00f3 kh\u0103n trong vi\u1ec7c n\u00e0y. \u0110\u1ed1i v\u1edbi nh\u1eefng v\u1eadt qu\u00e1 n\u1eb7ng, ch\u00fang ta s\u1ebd c\u1ea7n \u0111\u1ebfn s\u1ee9c c\u1ee7a nhi\u1ec1u ng\u01b0\u1eddi. T\u01b0 th\u1ebf k\u00e9o kh\u00f4ng chu\u1ea9n c\u00f2n c\u00f3 th\u1ec3 b\u1ecb ng\u00e3, g\u00e2y ra th\u01b0\u01a1ng t\u00edch.<\/p>\n\n\n\n
\u0110\u00f3 c\u0169ng ch\u00ednh l\u00e0 l\u00fd do v\u00ec sao m\u00e0 m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c ph\u00e1t minh v\u00e0 s\u1eed d\u1ee5ng trong th\u1ef1c t\u1ebf. Nh\u1eefng chi\u1ebfc m\u00e1y n\u00e0y s\u1ebd h\u1ed7 tr\u1ee3 con ng\u01b0\u1eddi trong vi\u1ec7c gi\u1ea3m b\u1edbt \u0111\u1ed9 n\u1eb7ng c\u1ee7a v\u1eadt khi \u0111\u01b0a v\u1eadt l\u00ean cao. H\u01a1n c\u1ea3, vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n c\u00f2n \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi k\u00e9o v\u1eadt.<\/p>\n\n\n\n
Trong ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd l\u1edbp 6 c\u00e1c em s\u1ebd \u0111\u01b0\u1ee3c t\u00ecm hi\u1ec3u v\u1ec1 m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n. C\u00f2n th\u1ef1c t\u1ebf cu\u1ed9c s\u1ed1ng, nh\u1eefng chi\u1ebfc m\u00e1y c\u01a1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o \u0111\u1eb7c bi\u1ec7t h\u01a1n \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u00f4ng vi\u1ec7c. C\u00e1c em c\u00f3 th\u1ec3 \u0111\u00e3 nh\u00ecn th\u1ea5y nhi\u1ec1u lo\u1ea1i m\u00e1y c\u01a1 h\u01a1n so v\u1edbi gi\u1edbi thi\u1ec7u trong ch\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1ee3c h\u1ecdc.<\/p>\n\n\n\n
M\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n l\u00e0 g\u00ec?<\/p>\n\n\n\n
M\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 m\u1ed9t lo\u1ea1i thi\u1ebft b\u1ecb c\u01a1 h\u1ecdc d\u00f9ng \u0111\u1ec3 thay \u0111\u1ed5i h\u01b0\u1edbng ho\u1eb7c \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c. \u0110\u00e2y \u0111\u1ec1u l\u00e0 nh\u1eefng m\u00f4 h\u00ecnh \u0111\u01a1n gi\u1ea3n nh\u1ea5t. T\u0103ng \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c s\u1ea3n sinh ra v\u00e0 gi\u1ea3m \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, m\u00e1y c\u01a1 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o theo nh\u1eefng l\u1ee3i th\u1ebf c\u01a1 h\u1ecdc. T\u1eeb \u0111\u00f3 gi\u00fap con ng\u01b0\u1eddi th\u1ef1c hi\u1ec7n vi\u1ec7c k\u00e9o v\u1eadt l\u00ean cao m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng h\u01a1n. Hi\u1ec3u v\u1ec1 c\u1ea5u t\u1ea1o v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng c\u1ee7a m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n, c\u00e1c em s\u1ebd th\u1ea5y \u0111\u01b0\u1ee3c nhi\u1ec1u v\u1eadn d\u1ee5ng c\u1ee7a chi\u1ebfc m\u00e1y n\u00e0y.<\/p>\n\n\n\n
R\u00f2ng r\u1ecdc \u2013 m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n<\/p>\n\n\n\n
C\u00e1c m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 di chuy\u1ec3n, \u0111\u01b0a v\u1eadt l\u00ean cao m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, an to\u00e0n h\u01a1n. Thay v\u00ec ch\u00fang ta t\u1ef1 d\u00f9ng s\u1ee9c l\u1ef1c c\u1ee7a m\u00ecnh \u0111\u1ec3 th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng. Th\u00ec ch\u00fang ta c\u00f3 th\u1ec3 gi\u1ea3m b\u1edbt s\u1ee9c c\u1ee7a b\u1ea3n th\u00e2n trong vi\u1ec7c k\u00e9o v\u1eadt l\u00ean cao nh\u1edd m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n. M\u00f4 h\u00ecnh chung, c\u00e1c lo\u1ea1i m\u00e1y c\u01a1 gi\u00fap \u0111\u1ee1 con ng\u01b0\u1eddi \u0111\u01b0a v\u1eadt l\u00ean cao \u0111\u1ec1u \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n t\u1eeb m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n.<\/p>\n\n\n\n
\u1ee8ng d\u1ee5ng c\u1ee7a l\u00fd thuy\u1ebft v\u1ec1 m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n<\/p>\n\n\n\n
C\u00e1c em s\u1ebd \u0111\u01b0\u1ee3c l\u00e0m quen v\u1edbi m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n trong qu\u00e1 tr\u00ecnh h\u1ecdc v\u1eadt l\u00fd l\u1edbp 6. M\u1ed7i em s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3u v\u1ec1 c\u1ea5u t\u1ea1o c\u1ee7a nh\u1eefng chi\u1ebfc m\u00e1y c\u01a1 n\u00e0y v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng c\u1ee7a ch\u00fang. Ngo\u00e0i ra, nh\u1eefng b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n c\u00f2n y\u00eau c\u1ea7u h\u1ecdc sinh<\/a> x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 l\u1edbn l\u1ef1c, h\u01b0\u1edbng k\u00e9o. Ch\u00ednh v\u00ec v\u1eady, c\u00e1c em n\u00ean nh\u1edb v\u1ec1 \u00fd ngh\u0129a, c\u00e1ch s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m b\u00e0i t\u1eadp d\u1ec5 d\u00e0ng h\u01a1n. Kh\u00f4ng ph\u1ea3i b\u1ea5t c\u1ee9 chi\u1ebfc m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n n\u00e0o c\u0169ng c\u00f3 c\u1ea5u t\u1ea1o gi\u1ed1ng nhau. Ch\u00fang \u0111\u01b0\u1ee3c chia ra th\u00e0nh c\u00e1c lo\u1ea1i ri\u00eang bi\u1ec7t.<\/p>\n\n\n\n M\u00f4 h\u00ecnh m\u1eb7t ph\u1eb3ng nghi\u00eang<\/p>\n\n\n\n C\u00e1c m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n<\/p>\n\n\n\n C\u00f3 ba lo\u1ea1i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n c\u00e1c em \u0111\u01b0\u1ee3c h\u1ecdc trong ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd l\u1edbp 6 ch\u00ednh l\u00e0: m\u1eb7t ph\u1eb3ng nghi\u00eang, r\u00f2ng r\u1ecdc v\u00e0 \u0111\u00f2n b\u1ea9y. H\u00ecnh d\u00e1ng v\u00e0 c\u1ea5u t\u1ea1o c\u1ee7a c\u00e1c lo\u1ea1i m\u00e1y c\u01a1 n\u00e0y c\u0169ng kh\u00e1c nhau. Ch\u00fang ta s\u1ebd \u0111i t\u00ecm hi\u1ec3u v\u1ec1 t\u1eebng lo\u1ea1i \u0111\u1ec3 d\u1ec5 d\u00e0ng nh\u1eadn bi\u1ebft h\u01a1n nh\u00e9!<\/p>\n\n\n\n M\u1eb7t ph\u1eb3ng nghi\u00eang \u2013 c\u00e1c lo\u1ea1i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n<\/p>\n\n\n\n M\u1eb7t ph\u1eb3ng nghi\u00eang l\u00e0 m\u1ed9t trong s\u1ed1 nh\u1eefng lo\u1ea1i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u trong cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y. M\u1eb7t ph\u1eb3ng nghi\u00eang c\u00f3 th\u1ec3 hi\u1ec3u \u0111\u01a1n gi\u1ea3n l\u00e0 m\u1ed9t t\u1ea5m v\u00e1n \u0111\u1eb7t nghi\u00eang d\u00f9ng \u0111\u1ec3 \u0111\u01b0a v\u1eadt l\u00ean cao. N\u00f3 l\u00e0 m\u1ed9t m\u1eb7t ph\u1eb3ng v\u1edbi \u0111i\u1ec3m \u0111\u1ea7u v\u00e0 \u0111i\u1ec3m cu\u1ed1i c\u00f3 \u0111\u1ed9 cao kh\u00e1c nhau. Th\u00f4ng th\u01b0\u1eddng, khi ch\u00fang ta di chuy\u1ec3n m\u1ed9t v\u1eadt l\u00ean cao v\u1edbi ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng s\u1ebd t\u1ed1n r\u1ea5t nhi\u1ec1u s\u1ee9c. Tuy nhi\u00ean n\u1ebfu s\u1eed d\u1ee5ng m\u1eb7t ph\u1eb3ng nghi\u00eang th\u00ec l\u1ef1c d\u00f9ng \u0111\u1ec3 di chuy\u1ec3n v\u1eadt l\u00ean cao s\u1ebd nh\u1ecf h\u01a1n.<\/p>\n\n\n\n \u0110i\u1ec3m tr\u1eeb c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng m\u1eb7t ph\u1eb3ng nghi\u00eang \u2013 m\u1ed9t trong nh\u1eefng c\u00e1c lo\u1ea1i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n ch\u00ednh l\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng di chuy\u1ec3n v\u1eadt s\u1ebd d\u00e0i h\u01a1n. Hi\u1ec7u su\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a m\u1eb7t ph\u1eb3ng nghi\u00eang ch\u00ednh l\u00e0 t\u1ec9 l\u1ec7 chi\u1ec1u cao chia cho \u0111\u1ed9 d\u00e0i c\u1ee7a m\u1eb7t ph\u1eb3ng nghi\u00eang. \u0110i\u1ec1u n\u00e0y c\u0169ng \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch b\u1eb1ng h\u00e0m l\u01b0\u1ee3ng gi\u00e1c c\u1ee7a to\u00e1n h\u1ecdc. M\u1eb7t ph\u1eb3ng nghi\u00eang gi\u00fap ch\u00fang ta di chuy\u1ec3n m\u1ed9t v\u1eadt l\u00ean v\u1ecb tr\u00ed cao h\u01a1n m\u1ed9t c\u00e1ch nh\u1eb9 nh\u00e0ng.<\/p>\n\n\n\n T\u00ecm hi\u1ec3u th\u00eam v\u1ec1 T\u00ecm hi\u1ec3u v\u1ec1 m\u1eb7t ph\u1eb3ng nghi\u00eang \u2013 m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n? Gi\u1ea3i \u0111\u00e1p V\u1eadt l\u00fd 6<\/p><\/blockquote>\n\n\n\n Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang<\/p>\n\n\n\n R\u00f2ng r\u1ecdc \u2013 c\u00e1c lo\u1ea1i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n<\/p>\n\n\n\n Kh\u00e1c v\u1edbi m\u1eb7t ph\u1eb3ng nghi\u00eang, r\u00f2ng r\u1ecdc \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o b\u1edfi kh\u1ed1i tr\u1ee5 kim lo\u1ea1i, gi\u00e1 \u0111\u1ee1, r\u00f2ng r\u1ecdc, d\u00e2y k\u00e9o. R\u00f2ng r\u1ecdc \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i l\u00e0 r\u00f2ng r\u1ecdc c\u1ed1 \u0111\u1ecbnh v\u00e0 r\u00f2ng r\u1ecdc \u0111\u1ed9ng. R\u00f2ng r\u1ecdc c\u1ed1 \u0111\u1ecbnh kh\u00f4ng l\u00e0m thay \u0111\u1ed5i \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c k\u00e9o nh\u01b0ng \u0111em \u0111\u1ebfn l\u1ee3i \u00edch v\u1ec1 chi\u1ec1u. C\u00e1c b\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111\u01b0a v\u1eadt l\u00ean cao d\u00f9 \u0111\u1ee9ng c\u00f9ng v\u1ecb tr\u00ed c\u1ee7a v\u1eadt ban \u0111\u1ea7u. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, r\u00f2ng r\u1ecdc c\u1ed1 \u0111\u1ecbnh \u0111em \u0111\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 l\u1ef1c l\u00e0 nh\u01b0 nhau F=P.<\/p>\n\n\n\n V\u00ed d\u1ee5 v\u1ec1 \u0111\u00f2n b\u1ea9y<\/p>\n\n\n\n R\u00f2ng r\u1ecdc \u0111\u1ed9ng<\/p>\n\n\n\n R\u00f2ng r\u1ecdc \u0111\u1ed9ng s\u1ebd \u0111em \u0111\u1ebfn l\u1ee3i v\u1ec1 c\u01b0\u1eddng \u0111\u1ed9 l\u1ef1c. R\u00f2ng r\u1ecdc \u0111\u1ed9ng kh\u00f4ng gi\u00fap thay \u0111\u1ed5i v\u1ec1 chi\u1ec1u nh\u01b0ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1ee3i 2 l\u1ea7n v\u1ec1 l\u1ef1c. Ch\u00fang ta c\u00f3 th\u1ec3 hi\u1ec3u \u0111\u01a1n gi\u1ea3n v\u1ec1 \u0111i\u1ec1u n\u00e0y. L\u1ef1c ch\u00fang ta d\u00f9ng \u0111\u1ebf k\u00e9o v\u1eadt l\u00ean cao ch\u1ec9 b\u1eb1ng \u00bd tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt. \u0110\u00e2y ch\u00ednh l\u00e0 t\u00e1c d\u1ee5ng c\u1ef1c k\u1ef3 t\u1ed1t m\u00e0 r\u00f2ng r\u1ecdc \u0111\u1ed9ng \u0111em \u0111\u1ebfn. H\u1ea7u h\u1ebft lo\u1ea1i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n \u0111\u1ec1u \u0111em \u0111\u1ebfn l\u1ee3i \u00edch trong l\u1ef1c k\u00e9o ho\u1eb7c h\u01b0\u1edbng k\u00e9o. Trong th\u1ef1c t\u1ebf cu\u1ed9c s\u1ed1ng, r\u00f2ng r\u1ecdc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u.<\/p>\n\n\n\n Tuy nhi\u00ean, hi\u1ec7n nay, ch\u00fang ta \u0111\u00e3 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t s\u1ed1 lo\u1ea1i m\u00e1y n\u00e2ng kh\u00e1c \u0111\u1ec3 di chuy\u1ec3n v\u1eadt l\u00ean cao thu\u1eadn ti\u1ec7n h\u01a1n. M\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng. S\u1eed d\u1ee5ng trong l\u1eafp \u0111\u1eb7t quy m\u00f4 v\u1eeba v\u00e0 nh\u1ecf. Vi\u1ec7c di chuy\u1ec3n c\u00e1c lo\u1ea1i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n c\u0169ng d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n\n\n\n \u0110\u00f2n b\u1ea9y \u2013 c\u00e1c lo\u1ea1i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n<\/p>\n\n\n\n \u0110\u00f2n b\u1ea9y c\u0169ng l\u00e0 m\u1ed9t trong c\u00e1c lo\u1ea1i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n c\u00f3 c\u1ea5u t\u1ea1o kh\u00f4ng qu\u00e1 ph\u1ee9c t\u1ea1p m\u00e0 \u0111em \u0111\u1ebfn t\u00e1c d\u1ee5ng t\u1ed1t. \u0110\u00f2n b\u1ea9y l\u00e0 m\u1ed9t v\u1eadt r\u1eafn s\u1eed d\u1ee5ng m\u1ed9t \u0111i\u1ec3m t\u1ef1a hay c\u00f2n g\u1ecdi l\u00e0 \u0111i\u1ec3m quay. \u0110i\u1ec3m n\u00e0y gi\u00fap bi\u1ebfn \u0111\u1ed5i l\u1ef1c c\u1ee7a m\u1ed9t v\u1eadt t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t v\u1eadt kh\u00e1c. Ch\u1eafc ch\u1eafn khi h\u1ecdc \u0111\u1ebfn b\u00e0i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n trong v\u1eadt l\u00fd 6. C\u00e1c em s\u1ebd \u0111\u01b0\u1ee3c nghe v\u1ec1 c\u00e2u n\u00f3i n\u1ed5i ti\u1ebfng c\u1ee7a Archimedes. Archimedes \u0111\u00e3 t\u1eebng n\u00f3i: \u201cH\u00e3y cho t\u00f4i m\u1ed9t \u0111i\u1ec3m t\u1ef1a, t\u00f4i s\u1ebd n\u00e2ng b\u1ed5ng Tr\u00e1i \u0110\u1ea5t l\u00ean\u201d. \u0110\u00f2n b\u1ea9y v\u00e0 quy t\u1eafc c\u1ee7a \u0111\u00f2n b\u1ea9y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u trong c\u00e1c lo\u1ea1i m\u00e1y c\u01a1 hi\u1ec7n nay.<\/p>\n\n\n\n T\u1eeb th\u1eddi xa x\u01b0a, \u00f4ng cha ta \u0111\u00e3 bi\u1ebft c\u00e1ch s\u1eed d\u1ee5ng \u0111\u00f2n b\u1ea9y \u0111\u1ec3 n\u00e2ng m\u1ed9t v\u1eadt kh\u00e1c l\u00ean cao. \u0110i\u1ec1u n\u00e0y \u0111em \u0111\u1ebfn nhi\u1ec1u k\u1ebft qu\u1ea3 t\u1ed1t trong th\u1ef1c t\u1ebf. \u0110\u00f2n b\u1ea9y th\u1eddi x\u01b0a c\u00f2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong qu\u00e2n \u0111\u1ed9i. Ng\u00e0y nay, m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n \u0111\u1ec1u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf<\/a> \u0111\u1eb7c bi\u1ec7t h\u01a1n. Nh\u1eefng chi\u1ebfc m\u00e1y n\u00e0y d\u00f9ng ph\u1ee5c v\u1ee5 nh\u1eefng c\u00f4ng vi\u1ec7c trong cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y. C\u00e1c em n\u00ean t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 t\u1eebng lo\u1ea1i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 hi\u1ec3u h\u01a1n v\u1ec1 ch\u1ee7 \u0111\u1ec1 n\u00e0y. \u0110i\u1ec1u n\u00e0y c\u0169ng gi\u00fap c\u00e1c em l\u00e0m b\u00e0i t\u1eadp v\u00ed d\u1ee5 th\u1ef1c t\u1ebf d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n\n\n\n C\u00f3 th\u1ec3 n\u00f3i, nh\u1eefng \u0111i\u1ec1u li\u00ean quan \u0111\u1ebfn c\u00e1c lo\u1ea1i m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u00fang t\u00f4i \u0111\u1ec1 c\u1eadp \u0111\u1ebfn tr\u00ean \u0111\u00e2y. Hy v\u1ecdng c\u00e1c em c\u00f3 th\u1ec3 \u0111\u1ecdc v\u00e0 ghi nh\u1edb nh\u1eefng \u0111i\u1ec1u c\u1ea7n bi\u1ebft. H\u1ecdc v\u1eadt l\u00fd c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng t\u1ed1t v\u00e0o cu\u1ed9c s\u1ed1ng. \u0110\u00e2y ch\u00ednh l\u00e0 \u0111i\u1ec1u t\u1ed1t nh\u1ea5t d\u00e0nh cho c\u00e1c em. Khi v\u1eeba h\u1ecdc v\u1eeba th\u1ef1c h\u00e0nh, vi\u1ec7c h\u1ecdc s\u1ebd kh\u00f4ng c\u00f2n l\u00e0 l\u00fd thuy\u1ebft nh\u00e0m ch\u00e1n. C\u1ea3m \u01a1n c\u00e1c em \u0111\u00e3 \u0111\u00f3n \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y.<\/p>\n\n\n\n T\u00ecm \u0111\u1ecdc th\u00eam c\u00e1c b\u00e0i vi\u1ebft kh\u00e1c c\u00f3 c\u00f9ng ch\u1ee7 \u0111\u1ec1<\/p><\/blockquote>\n\n\n\n T\u00ecm hi\u1ec3u v\u1ec1 r\u00f2ng r\u1ecdc c\u1ed1 \u0111\u1ecbnh? Gi\u1ea3i \u0111\u00e1p ki\u1ebfn th\u1ee9c v\u1eadt l<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":" Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn \u0110\u1ebfn v\u1edbi ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd l\u1edbp 6, c\u00e1c em s\u1ebd \u0111\u01b0\u1ee3c h\u1ecdc v\u1ec1 nh\u1eefng chi\u1ebfc m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n. C\u00e1c em s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3u v\u1ec1 c\u1ea5u t\u1ea1o, c\u00e1ch s\u1eed d\u1ee5ng nh\u1eefng chi\u1ebfc m\u00e1y n\u00e0y. Th\u1ebf nh\u01b0ng, \u0111\u00e3 bao gi\u1edd c\u00e1c em t\u00f2 m\u00f2 v\u1ec1 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf […]<\/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-1149","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\/1149","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=1149"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1149\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}