h\u1ecdc t\u1eadp<\/a> c\u1ee7a c\u00e1c em.<\/p>\n\n\n\nS\u1ef1 kh\u00e1c bi\u1ec7t \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n<\/p>\n\n\n\n
\u00c1p su\u1ea5t kh\u00ed quy\u1ec3n l\u00e0 g\u00ec?<\/p>\n\n\n\n
Gi\u1ed1ng v\u1edbi c\u00e1c lo\u1ea1i \u00e1p su\u1ea5t kh\u00e1c, \u00e1p su\u1ea5t b\u1ea7u kh\u00ed quy\u1ec3n c\u0169ng t\u1ea1o \u00e1p l\u1ef1c l\u00ean b\u1ec1 m\u1eb7t m\u1ecdi v\u1eadt v\u00e0 tr\u00e1i \u0111\u1ea5t. Nh\u01b0 ch\u00fang ta \u0111\u00e3 bi\u1ebft, tr\u00e1i \u0111\u1ea5t lu\u00f4n \u0111\u01b0\u1ee3c bao b\u1ecdc b\u1edfi m\u1ed9t l\u1edbp kh\u00f4ng kh\u00ed d\u00e0y t\u1edbi h\u00e0ng ng\u00e0n km. Ch\u00fang ta c\u00f2n g\u1ecdi \u0111\u00e2y l\u00e0 l\u1edbp kh\u00ed quy\u1ec3n. L\u1edbp kh\u00f4ng kh\u00ed n\u00e0y c\u0169ng c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng nh\u1ea5t \u0111\u1ecbnh. Ch\u00ednh v\u00ec v\u1eady, kh\u00ed quy\u1ec3n c\u0169ng c\u00f3 \u00e1p su\u1ea5t \u0111\u00e8 n\u00e9n n\u00ean v\u1ea1n v\u1eadt tr\u00ean tr\u00e1i \u0111\u1ea5t. T\u1eeb \u0111\u00f3 ch\u00fang ta c\u00f3 \u0111\u1ecbnh ngh\u0129a v\u1ec1 \u00e1p su\u1ea5t c\u1ee7a kh\u00f4ng kh\u00ed.<\/p>\n\n\n\n
Kh\u00e1c v\u1edbi \u00e1p su\u1ea5t c\u1ee7a ch\u1ea5t r\u1eafn, hay ch\u1ea5t l\u1ecfng, \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n t\u00e1c d\u1ee5ng l\u00ean v\u1eadt theo m\u1ecdi ph\u01b0\u01a1ng h\u01b0\u1edbng kh\u00e1c nhau. B\u1edfi m\u1ecdi v\u1eadt \u0111\u1ec1u bao b\u1ecdc b\u1edfi kh\u00f4ng kh\u00ed v\u00e0 ch\u1ecbu t\u00e1c d\u1ee5ng l\u1ef1c l\u00ean b\u1ec1 m\u1eb7t c\u1ee7a m\u00ecnh. \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a lo\u1ea1i \u00e1p su\u1ea5t n\u00e0y ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a kh\u00f4ng kh\u00ed. Ch\u00fang ta \u0111\u00e3 \u0111\u01b0\u1ee3c h\u1ecdc v\u1ec1 \u0111i\u1ec1u n\u00e0y trong c\u00e1c l\u1edbp d\u01b0\u1edbi. Kh\u00f4ng kh\u00ed c\u00e0ng l\u00ean cao c\u00e0ng lo\u00e3ng, v\u00ec v\u1eady tr\u1ecdng l\u01b0\u1ee3ng c\u0169ng v\u00ec \u0111\u00f3 m\u00e0 nh\u1eb9 h\u01a1n.<\/p>\n\n\n\n
T\u1eeb \u0111\u00f3 d\u1eabn \u0111\u1ebfn \u00e1p su\u1ea5t b\u1ea7u kh\u00ed quy\u1ec3n c\u0169ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i. Nh\u1eefng y\u1ebfu t\u1ed1 t\u00e1c \u0111\u1ed9ng l\u00ean \u00e1p su\u1ea5t n\u00e0y nh\u01b0 nhi\u1ec7t \u0111\u1ed9, gi\u00f3, \u0111\u1ed9 cao,\u2026 Ngo\u00e0i ra, \u00e1p su\u1ea5t c\u1ee7a kh\u00f4ng kh\u00ed t\u1ea1i m\u1ed9t n\u01a1i c\u0169ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i theo th\u1eddi gian v\u00e0 nhi\u1ec7t \u0111\u1ed9. N\u00f3i m\u1ed9t c\u00e1ch d\u1ec5 hi\u1ec3u, \u00e1p su\u1ea5t c\u1ee7a kh\u00f4ng kh\u00ed thay \u0111\u1ed5i theo th\u1eddi ti\u1ebft c\u1ee7a n\u01a1i \u0111\u00f3. Ch\u00fang ta ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 l\u00e0m th\u00ed nghi\u1ec7m \u0111o \u00e1p su\u1ea5t \u1edf c\u00e1c \u0111\u1ed9 cao kh\u00e1c nhau. T\u1eeb \u0111\u00f3 r\u00fat ra k\u1ebft lu\u1eadn v\u1ec1 \u0111i\u1ec1u n\u00e0y. C\u00e1c em c\u0169ng n\u00ean \u0111\u1ec3 \u00fd \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u00e1p su\u1ea5t \u0111\u1ec3 \u0111em v\u1ec1 k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c nh\u1ea5t.<\/p>\n\n\n\n
\u0110\u1ed9 l\u1edbn c\u1ee7a \u00e1p su\u1ea5t kh\u00ed<\/p>\n\n\n\n
\u0110\u1ed9 l\u1edbn c\u1ee7a \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng c\u00e1ch kh\u00e1c so v\u1edbi c\u00e1c lo\u1ea1i \u00e1p su\u1ea5t c\u00f2n l\u1ea1i. Ch\u00ednh v\u00ec v\u1eady, \u0111\u01a1n v\u1ecb \u0111o c\u1ee7a \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed c\u0169ng \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0 \u0111\u01a1n v\u1ecb kh\u00e1c. Theo \u0111\u01a1n v\u1ecb \u0111o qu\u1ed1c t\u1ebf, ng\u01b0\u1eddi ta d\u00f9ng mmHg \u0111\u1ec3 l\u00e0m \u0111\u01a1n v\u1ecb \u0111o c\u1ee7a \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed. \u0110\u1ec3 nh\u1eadn ra \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y, c\u00e1c nh\u00e0 v\u1eadt l\u00fd h\u1ecdc \u0111\u00e3 ph\u1ea3i l\u00e0m r\u1ea5t nhi\u1ec1u th\u00ed nghi\u1ec7m \u0111\u1ec3 ki\u1ebfm ch\u1ee9ng. M\u1ed9t trong nh\u1eefng th\u00ed nghi\u1ec7m v\u1ec1 ch\u1ee7 \u0111\u1ec1 n\u00e0y, T\u00f4-ri-xe-li ch\u00ednh l\u00e0 th\u00ed nghi\u1ec7m \u0111\u00fang v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t. \u0110\u00e2y c\u0169ng ch\u00ednh l\u00e0 th\u00ed nghi\u1ec7m \u0111\u1ec3 ch\u1ee9ng nh\u1eadn nh\u1eefng l\u00fd thuy\u1ebft v\u1ec1 \u0111\u1ed9 l\u1edbn c\u1ee7a \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed.<\/p>\n\n\n\n
T\u00e1c \u0111\u1ed9ng c\u1ee7a \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed<\/p>\n\n\n\n
N\u0103m 1654, th\u1ecb tr\u01b0\u1eddng th\u00e0nh ph\u1ed1 M\u00e1c \u2013 \u0111\u01a1 \u2013 bu\u1ed1c c\u1ee7a \u0110\u1ee9c l\u00e0 \u00f4ng Gh\u00ea \u2013 r\u00edch \u0111\u00e3 l\u00e0m th\u00ed nghi\u1ec7m nh\u01b0 sau:<\/p>\n\n\n\n
\u0110\u1ea7u ti\u00ean, \u00f4ng \u0111\u00e3 l\u1ea5y m\u1ed9t \u1ed1ng th\u1ee7y tinh d\u00e0i 1m, \u0111\u1ed5 \u0111\u1ea7y th\u1ee7y ng\u00e2n v\u00e0o.<\/p>\n\n\n\n
Sau \u0111\u00f3, \u00f4ng l\u1ea5y ng\u00f3n tay b\u1ecbt mi\u1ec7ng \u1ed1ng r\u1ed3i quay ng\u01b0\u1ee3c \u1ed1ng xu\u1ed1ng.<\/p>\n\n\n\n
Nh\u00fang ch\u00ecm mi\u1ec7ng \u1ed1ng v\u00e0o m\u1ed9t ch\u1eadu \u0111\u1ef1ng th\u1ee7y ng\u00e2n r\u1ed3i b\u1ecf tay b\u1ecbt mi\u1ec7ng \u1ed1ng ra.<\/p>\n\n\n\n
Th\u1ee7y ng\u00e2n trong \u1ed1ng t\u1ee5t xu\u1ed1ng c\u00f2n 76cm t\u1ee9c l\u00e0 760mm.<\/p>\n\n\n\n
Ph\u1ea7n h\u1edf ra c\u1ee7a th\u1ee7y ng\u00e2n trong \u1ed1ng n\u00e0y ch\u00ednh l\u00e0 do \u00e1p su\u1ea5t kh\u00ed trong \u1ed1ng t\u1ea1o ra. Ph\u1ea7n \u00e1p l\u1ef1c \u0111\u00e8 n\u00e9n l\u00ean th\u1ee7y ng\u00e2n v\u00e0 th\u00e0nh \u1ed1ng ch\u00ednh l\u00e0 \u00e1p su\u1ea5t c\u1ee7a kh\u00f4ng kh\u00ed. \u0110\u1ed9 l\u1edbn c\u1ee7a \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed trong \u1ed1ng b\u1eb1ng \u00e1p su\u1ea5t c\u1ee7a c\u1ee5c th\u1ee7y ng\u00e2n trong \u1ed1ng T\u00f4 \u2013 ri \u2013 xe \u2013 li. \u00c1p su\u1ea5t g\u00e2y ra b\u1edfi tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a c\u1ed9t th\u1ee7y ng\u00e2n \u0111\u01b0\u1ee3c t\u00ednh theo c\u00f4ng th\u1ee9c: p=h.d<\/p>\n\n\n\n
Trong \u0111\u00f3 p l\u00e0 \u0111\u1ed9 l\u1edbn c\u1ee7a \u00e1p su\u1ea5t, h l\u00e0 chi\u1ec1u cao c\u1ee7a c\u1ed9t ch\u1ea5t l\u1ecfng, d l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a ch\u1ea5t l\u1ecfng. Ch\u00fang ta c\u00f3 th\u1ec3 t\u00ednh \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n th\u00f4ng qua \u00e1p su\u1ea5t ch\u1ea5t l\u1ecfng. B\u1edfi trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, hai \u00e1p su\u1ea5t l\u00e0 nh\u01b0 nhau.<\/p>\n\n\n\n
C\u00e1c d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n<\/p>\n\n\n\n
Gi\u1ed1ng nh\u01b0 c\u00e1c b\u00e0i t\u1eadp v\u1ec1 ch\u1ee7 \u0111\u1ec1 kh\u00e1c, \u00e1p su\u1ea5t b\u1ea7u kh\u00ed quy\u1ec3n c\u0169ng c\u00f3 c\u00e1c b\u00e0i t\u1eadp ri\u00eang bi\u1ec7t. V\u1eabn l\u00e0 hai d\u1ea1ng b\u00e0i tr\u1eafc nghi\u1ec7m v\u00e0 t\u1ef1 lu\u1eadn, c\u00e1c em c\u1ea7n ph\u1ea3i n\u1eafm r\u00f5 v\u1ec1 l\u00fd thuy\u1ebft v\u00e0 c\u00e1ch v\u1eadn d\u1ee5ng. Ch\u00fang t\u00f4i \u0111\u00e3 chia th\u00e0nh hai d\u1ea1ng b\u00e0i v\u00e0 l\u1ea5y v\u00ed d\u1ee5 ph\u00eda d\u01b0\u1edbi \u0111\u00e2y. C\u00e1c em h\u00e3y \u0111\u1ecdc v\u00e0 tham kh\u1ea3o nh\u00e9!<\/p>\n\n\n\n
D\u1ea1ng b\u00e0i tr\u1eafc nghi\u1ec7m<\/p>\n\n\n\n
V\u1edbi d\u1ea1ng b\u00e0i n\u00e0y, ch\u1ee7 y\u1ebfu nh\u1eefng c\u00e2u h\u1ecfi s\u1ebd xoay quanh l\u00fd thuy\u1ebft. C\u00e1c em ch\u1ec9 c\u1ea7n nh\u1edb k\u1ef9 v\u1ec1 \u0111\u1ecbnh ngh\u0129a, c\u00e1ch h\u00ecnh th\u00e0nh \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n \u0111\u1ec3 l\u00e0m b\u00e0i. Ngo\u00e0i ra, nh\u1eefng v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u1ec1 ch\u1ee7 \u0111\u1ec1 n\u00e0y c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0a v\u00e0o c\u00e2u h\u1ecfi. \u0110\u00e1p \u00e1n c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m c\u00f3 th\u1ec3 \u0111\u00fang m\u1ed9t ph\u1ea7n ho\u1eb7c kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7. C\u00e1c em c\u1ea7n ph\u1ea3i \u0111\u1ecdc k\u1ef9 v\u00e0 ch\u1ecdn \u0111\u01b0\u1ee3c \u0111\u00e1p \u00e1n ch\u00ednh x\u00e1c \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t.<\/p>\n\n\n\n
V\u00ed d\u1ee5:<\/p>\n\n\n\n
Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0o do \u00e1p su\u1ea5t b\u1ea7u kh\u00ed quy\u1ec3n g\u00e2y ra?<\/p>\n\n\n\n
Qu\u1ea3 b\u00f3ng b\u00e0n b\u1ecb b\u1eb9p th\u1ea3 v\u00e0o n\u01b0\u1edbc n\u00f3ng l\u1ea1i ph\u1ed3ng l\u00ean nh\u01b0 c\u0169<\/p>\n\n\n\n
H\u00fat x\u0103ng t\u1eeb b\u00ecnh ch\u1ee9a c\u1ee7a xe b\u1eb1ng v\u00f2i<\/p>\n\n\n\n
U\u1ed1ng n\u01b0\u1edbc trong c\u1ed1c b\u1eb1ng \u1ed1ng h\u00fat<\/p>\n\n\n\n
L\u1ea5y thu\u1ed1c v\u00e0o xilanh \u0111\u1ec3 ti\u00eam<\/p>\n\n\n\n
L\u1eddi gi\u1ea3i<\/p>\n\n\n\n
Ch\u1ecdn \u0111\u00e1p \u00e1n A: Qu\u1ea3 b\u00f3ng b\u00e0n b\u1ecb b\u1eb9p th\u1ea3 v\u00e0o n\u01b0\u1edbc n\u00f3ng l\u1ea1i ph\u1ed3ng l\u00ean nh\u01b0 c\u0169.<\/p>\n\n\n\n
D\u1ea1ng b\u00e0i t\u1ef1 lu\u1eadn<\/p>\n\n\n\n
D\u1ea1ng b\u00e0i t\u1ef1 lu\u1eadn th\u01b0\u1eddng s\u1ebd kh\u00f3 h\u01a1n so v\u1edbi tr\u1eafc nghi\u1ec7m. C\u00e1c em s\u1ebd ph\u1ea3i t\u00ednh to\u00e1n t\u1eebng b\u01b0\u1edbc \u0111\u1ec3 \u0111\u01b0a ra k\u1ebft qu\u1ea3 cu\u1ed1i c\u00f9ng. T\u1eeb nh\u1eefng d\u1eef ki\u1ec7n \u0111\u1ec1 b\u00e0i \u0111\u01b0a ra, c\u00e1c em ch\u1ecdn \u0111\u01b0\u1ee3c d\u1eef ki\u1ec7n \u0111\u00fang. T\u1eeb \u0111\u00f3 l\u00fd gi\u1ea3i, l\u1eafp gh\u00e9p v\u00e0o c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh to\u00e1n ch\u00ednh x\u00e1c nh\u1ea5t. \u00c1p su\u1ea5t b\u1ea7u kh\u00ed quy\u1ec3n \u0111\u01b0\u1ee3c coi l\u00e0 d\u1ea1ng b\u00e0i kh\u00f3. C\u00e1c em c\u1ea7n ch\u00fa \u00fd nhi\u1ec1u h\u01a1n.<\/p>\n\n\n\n
V\u00ed d\u1ee5:<\/p>\n\n\n\n
Tr\u00ean \u0111\u1ec9nh m\u1ed9t ng\u1ecdn \u0111\u1ed3i cao 650m ng\u01b0\u1eddi ta \u0111o \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n \u0111\u01b0\u1ee3c 715mmHg. T\u00ednh \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n \u1edf ch\u00e2n \u0111\u1ed3i? Bi\u1ebft r\u1eb1ng c\u1ee9 l\u00ean cao 12m th\u00ec \u00e1p su\u1ea5t b\u1ea7u kh\u00ed quy\u1ec3n gi\u1ea3m 1mmHg.<\/p>\n\n\n\n
\u00c1p su\u1ea5t b\u1ea7u kh\u00ed quy\u1ec3n<\/p>\n\n\n\n
C\u00f3 th\u1ec3 n\u00f3i, nh\u1eefng ki\u1ebfn th\u1ee9c v\u1ec1 ch\u1ee7 \u0111\u1ec1 \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u00fang t\u00f4i \u0111\u1ec1 c\u1eadp tr\u00ean \u0111\u00e2y. Hy v\u1ecdng b\u00e0i vi\u1ebft c\u1ee7a ch\u00fang t\u00f4i c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n hi\u1ec3u h\u01a1n v\u1ec1 ch\u1ee7 \u0111\u1ec1 n\u00e0y. C\u1ea3m \u01a1n c\u00e1c em \u0111\u00e3 \u0111\u00f3n \u0111\u1ecdc b\u00e0i vi\u1ebft \u00e1p su\u1ea5t ch\u1ea5t l\u1ecfng b\u00ecnh th\u00f4ng nhau. Nh\u1eefng ki\u1ebfn th\u1ee9c v\u1eadt l\u00fd 8 v\u1eabn \u0111ang \u0111\u01b0\u1ee3c ch\u00fang t\u00f4i \u0111\u0103ng t\u1ea3i tr\u00ean trang ch\u1ee7. C\u00e1c em h\u00e3y t<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Ch\u00fang ta \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00ecm hi\u1ec3u v\u1ec1 \u00e1p su\u1ea5t trong c\u00e1c b\u00e0i vi\u1ebft tr\u01b0\u1edbc. Th\u1ebf nh\u01b0ng, \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n l\u1ea1i l\u00e0 m\u1ed9t ch\u1ee7 \u0111\u1ec1 ri\u00eang bi\u1ec7t trong ch\u00f9m b\u00e0i v\u1ec1 \u00e1p su\u1ea5t. C\u00f3 r\u1ea5t nhi\u1ec1u c\u00e2u h\u1ecfi xoay quanh \u0111i\u1ec1u n\u00e0y. T\u1ea1i sao l\u1ea1i c\u00f3 \u00e1p su\u1ea5t trong […]<\/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-1249","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\/1249","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=1249"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1249\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}