{"id":569536,"date":"2026-07-24T09:15:40","date_gmt":"2026-07-24T02:15:40","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=569536"},"modified":"2026-07-24T09:25:27","modified_gmt":"2026-07-24T02:25:27","slug":"song-co","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/song-co\/","title":{"rendered":"S\u00f3ng c\u01a1 l\u00e0 g\u00ec? Ph\u00e2n lo\u1ea1i, c\u00f4ng th\u1ee9c b\u01b0\u1edbc s\u00f3ng v\u00e0 b\u00e0i t\u1eadp"},"content":{"rendered":"<p>B\u1ea1n \u0111\u00e3 bao gi\u1edd th\u1ea3 m\u1ed9t vi\u00ean s\u1ecfi xu\u1ed1ng m\u1eb7t h\u1ed3 v\u00e0 th\u1ea5y nh\u1eefng v\u00f2ng tr\u00f2n lan r\u1ed9ng ra ch\u01b0a? \u0110\u00f3 ch\u00ednh l\u00e0 h\u00ecnh \u1ea3nh tr\u1ef1c quan nh\u1ea5t v\u1ec1 s\u00f3ng c\u01a1. S\u00f3ng c\u01a1 l\u00e0 dao \u0111\u1ed9ng c\u01a1 h\u1ecdc lan truy\u1ec1n trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng v\u1eadt ch\u1ea5t nh\u01b0 r\u1eafn, l\u1ecfng ho\u1eb7c kh\u00ed, v\u00e0 \u0111i\u1ec1u \u0111\u1eb7c bi\u1ec7t l\u00e0 n\u00f3 kh\u00f4ng th\u1ec3 truy\u1ec1n \u0111\u01b0\u1ee3c trong ch\u00e2n kh\u00f4ng. Khi s\u00f3ng \u0111i qua, c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a m\u00f4i tr\u01b0\u1eddng ch\u1ec9 dao \u0111\u1ed9ng t\u1ea1i ch\u1ed7 quanh v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng ch\u1ee9 kh\u00f4ng b\u1ecb cu\u1ed1n theo s\u00f3ng. \u0110\u00e2y l\u00e0 ph\u1ea7n ki\u1ebfn th\u1ee9c quan tr\u1ecdng trong ch\u01b0\u01a1ng tr\u00ecnh V\u1eadt l\u00fd l\u1edbp 12, th\u01b0\u1eddng xuy\u00ean xu\u1ea5t hi\u1ec7n trong c\u00e1c \u0111\u1ec1 thi.<\/p>\n<h2>S\u00f3ng c\u01a1 l\u00e0 g\u00ec?<\/h2>\n<p>S\u00f3ng c\u01a1 l\u00e0 qu\u00e1 tr\u00ecnh lan truy\u1ec1n dao \u0111\u1ed9ng c\u01a1 trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng v\u1eadt ch\u1ea5t. Khi m\u1ed9t ph\u1ea7n t\u1eed c\u1ee7a m\u00f4i tr\u01b0\u1eddng dao \u0111\u1ed9ng, n\u00f3 t\u00e1c \u0111\u1ed9ng l\u00ean c\u00e1c ph\u1ea7n t\u1eed l\u00e2n c\u1eadn v\u00e0 l\u00e0m ch\u00fang dao \u0111\u1ed9ng theo, t\u1eeb \u0111\u00f3 t\u1ea1o th\u00e0nh s\u1ef1 lan truy\u1ec1n c\u1ee7a s\u00f3ng. \u0110i\u1ec1u quan tr\u1ecdng c\u1ea7n l\u01b0u \u00fd l\u00e0 s\u00f3ng c\u01a1 truy\u1ec1n pha dao \u0111\u1ed9ng v\u00e0 n\u0103ng l\u01b0\u1ee3ng, c\u00f2n c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a m\u00f4i tr\u01b0\u1eddng ch\u1ec9 dao \u0111\u1ed9ng quanh v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng c\u1ee7a ch\u00fang ch\u1ee9 kh\u00f4ng di chuy\u1ec3n theo s\u00f3ng. Ch\u00ednh v\u00ec c\u1ea7n c\u00e1c ph\u1ea7n t\u1eed v\u1eadt ch\u1ea5t \u0111\u1ec3 truy\u1ec1n dao \u0111\u1ed9ng n\u00ean s\u00f3ng c\u01a1 kh\u00f4ng t\u1ed3n t\u1ea1i trong ch\u00e2n kh\u00f4ng, kh\u00e1c v\u1edbi s\u00f3ng \u0111i\u1ec7n t\u1eeb hay \u00e1nh s\u00e1ng.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-569772 aligncenter\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-1.jpg\" alt=\"song-co-1\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>Ph\u00e2n lo\u1ea1i s\u00f3ng c\u01a1<\/h2>\n<p>D\u1ef1a v\u00e0o ph\u01b0\u01a1ng dao \u0111\u1ed9ng c\u1ee7a c\u00e1c ph\u1ea7n t\u1eed so v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng, ng\u01b0\u1eddi ta chia s\u00f3ng c\u01a1 th\u00e0nh hai lo\u1ea1i ch\u00ednh l\u00e0 s\u00f3ng ngang v\u00e0 s\u00f3ng d\u1ecdc.<\/p>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i s\u00f3ng<\/th>\n<th>\u0110\u1eb7c \u0111i\u1ec3m<\/th>\n<th>V\u00ed d\u1ee5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>S\u00f3ng ngang<\/td>\n<td>Ph\u01b0\u01a1ng dao \u0111\u1ed9ng vu\u00f4ng g\u00f3c v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng<\/td>\n<td>S\u00f3ng tr\u00ean m\u1eb7t n\u01b0\u1edbc, s\u00f3ng tr\u00ean d\u00e2y<\/td>\n<\/tr>\n<tr>\n<td>S\u00f3ng d\u1ecdc<\/td>\n<td>Ph\u01b0\u01a1ng dao \u0111\u1ed9ng tr\u00f9ng v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng<\/td>\n<td>S\u00f3ng \u00e2m trong kh\u00f4ng kh\u00ed, s\u00f3ng tr\u00ean l\u00f2 xo<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>S\u00f3ng ngang truy\u1ec1n \u0111\u01b0\u1ee3c trong ch\u1ea5t r\u1eafn v\u00e0 b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng; trong khi \u0111\u00f3 s\u00f3ng d\u1ecdc truy\u1ec1n \u0111\u01b0\u1ee3c trong c\u1ea3 ba m\u00f4i tr\u01b0\u1eddng r\u1eafn, l\u1ecfng v\u00e0 kh\u00ed. \u0110\u00e2y l\u00e0 \u0111i\u1ec3m kh\u00e1c bi\u1ec7t quan tr\u1ecdng m\u00e0 b\u1ea1n c\u1ea7n ghi nh\u1edb \u0111\u1ec3 l\u00e0m \u0111\u00fang c\u00e1c c\u00e2u h\u1ecfi l\u00fd thuy\u1ebft.<\/p>\n<p><strong>Xem th\u00eam: <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/ham-so-la-gi\/\">H\u00e0m s\u1ed1 l\u00e0 g\u00ec? Kh\u00e1i ni\u1ec7m, t\u1eadp x\u00e1c \u0111\u1ecbnh v\u00e0 \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1<\/a><\/strong><\/p>\n<h2>B\u1ea3ng so s\u00e1nh s\u00f3ng d\u1ecdc v\u00e0 s\u00f3ng ngang<\/h2>\n<p>\u0110\u1ec3 ph\u00e2n bi\u1ec7t nhanh hai lo\u1ea1i s\u00f3ng c\u01a1, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o b\u1ea3ng t\u1ed5ng h\u1ee3p c\u00e1c ti\u00eau ch\u00ed d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n<table>\n<thead>\n<tr>\n<th>Ti\u00eau ch\u00ed<\/th>\n<th>S\u00f3ng ngang<\/th>\n<th>S\u00f3ng d\u1ecdc<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ph\u01b0\u01a1ng dao \u0111\u1ed9ng<\/td>\n<td>Vu\u00f4ng g\u00f3c v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng<\/td>\n<td>Tr\u00f9ng v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng<\/td>\n<\/tr>\n<tr>\n<td>M\u00f4i tr\u01b0\u1eddng truy\u1ec1n<\/td>\n<td>Ch\u1ea5t r\u1eafn v\u00e0 b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng<\/td>\n<td>Ch\u1ea5t r\u1eafn, ch\u1ea5t l\u1ecfng v\u00e0 ch\u1ea5t kh\u00ed<\/td>\n<\/tr>\n<tr>\n<td>H\u00ecnh d\u1ea1ng \u0111\u1eb7c tr\u01b0ng<\/td>\n<td>\u0110\u1ec9nh s\u00f3ng v\u00e0 h\u00f5m s\u00f3ng<\/td>\n<td>V\u00f9ng n\u00e9n v\u00e0 v\u00f9ng gi\u00e3n<\/td>\n<\/tr>\n<tr>\n<td>V\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/td>\n<td>S\u00f3ng n\u01b0\u1edbc, s\u00f3ng tr\u00ean s\u1ee3i d\u00e2y \u0111\u00e0n<\/td>\n<td>S\u00f3ng \u00e2m, s\u00f3ng d\u1ecdc tr\u00ean l\u00f2 xo<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng c\u1ee7a s\u00f3ng c\u01a1<\/h2>\n<p>M\u1ed9t s\u00f3ng c\u01a1 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 \u0111\u1ea7y \u0111\u1ee7 th\u00f4ng qua c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng sau \u0111\u00e2y.<\/p>\n<ul>\n<li>Bi\u00ean \u0111\u1ed9 s\u00f3ng: bi\u00ean \u0111\u1ed9 dao \u0111\u1ed9ng c\u1ee7a m\u1ed7i ph\u1ea7n t\u1eed m\u00f4i tr\u01b0\u1eddng, quy\u1ebft \u0111\u1ecbnh n\u0103ng l\u01b0\u1ee3ng m\u00e0 s\u00f3ng mang theo.<\/li>\n<li>Chu k\u1ef3 T v\u00e0 t\u1ea7n s\u1ed1 f: b\u1eb1ng chu k\u1ef3 v\u00e0 t\u1ea7n s\u1ed1 dao \u0111\u1ed9ng c\u1ee7a ngu\u1ed3n s\u00f3ng, kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o m\u00f4i tr\u01b0\u1eddng truy\u1ec1n.<\/li>\n<li>B\u01b0\u1edbc s\u00f3ng \u03bb: qu\u00e3ng \u0111\u01b0\u1eddng s\u00f3ng truy\u1ec1n \u0111\u01b0\u1ee3c trong m\u1ed9t chu k\u1ef3, hay kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111i\u1ec3m g\u1ea7n nhau nh\u1ea5t tr\u00ean ph\u01b0\u01a1ng truy\u1ec1n dao \u0111\u1ed9ng c\u00f9ng pha.<\/li>\n<li>T\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u00f3ng v: t\u1ed1c \u0111\u1ed9 lan truy\u1ec1n dao \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng, ph\u1ee5 thu\u1ed9c v\u00e0o b\u1ea3n ch\u1ea5t v\u00e0 tr\u1ea1ng th\u00e1i c\u1ee7a m\u00f4i tr\u01b0\u1eddng.<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"size-full wp-image-569773 aligncenter\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-2.jpg\" alt=\"song-co-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>C\u00f4ng th\u1ee9c c\u1ee7a s\u00f3ng c\u01a1<\/h2>\n<p>C\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng c\u1ee7a s\u00f3ng c\u01a1 li\u00ean h\u1ec7 v\u1edbi nhau qua c\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n<ul>\n<li>v = \u03bb \u00d7 f = \u03bb \/ T, suy ra \u03bb = v \u00d7 T = v \/ f<\/li>\n<\/ul>\n<p>Trong \u0111\u00f3 v l\u00e0 t\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u00f3ng (m\/s), \u03bb l\u00e0 b\u01b0\u1edbc s\u00f3ng (m), f l\u00e0 t\u1ea7n s\u1ed1 (Hz) v\u00e0 T l\u00e0 chu k\u1ef3 (s). T\u1eeb c\u00f4ng th\u1ee9c n\u00e0y, n\u1ebfu bi\u1ebft hai trong ba \u0111\u1ea1i l\u01b0\u1ee3ng v, \u03bb, f b\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c \u0111\u1ea1i l\u01b0\u1ee3ng c\u00f2n l\u1ea1i. L\u01b0u \u00fd lu\u00f4n \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb v\u1ec1 chu\u1ea9n SI tr\u01b0\u1edbc khi thay s\u1ed1 \u0111\u1ec3 tr\u00e1nh sai k\u1ebft qu\u1ea3.<\/p>\n<h2>V\u00ed d\u1ee5 v\u00e0 b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng c\u00f3 l\u1eddi gi\u1ea3i<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp c\u01a1 b\u1ea3n v\u1ec1 s\u00f3ng c\u01a1 k\u00e8m l\u1eddi gi\u1ea3i chi ti\u1ebft t\u1eebng b\u01b0\u1edbc \u0111\u1ec3 b\u1ea1n luy\u1ec7n t\u1eadp.<\/p>\n<p><strong>B\u00e0i 1:<\/strong> M\u1ed9t s\u00f3ng c\u01a1 c\u00f3 t\u1ea7n s\u1ed1 50 Hz v\u00e0 b\u01b0\u1edbc s\u00f3ng 4 m. T\u00ednh t\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u00f3ng.<\/p>\n<ul>\n<li>B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh d\u1eef ki\u1ec7n: f = 50 Hz, \u03bb = 4 m.<\/li>\n<li>B\u01b0\u1edbc 2: \u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c v = \u03bb \u00d7 f.<\/li>\n<li>B\u01b0\u1edbc 3: Thay s\u1ed1: v = 4 \u00d7 50 = 200 m\/s.<\/li>\n<\/ul>\n<p><strong>B\u00e0i 2:<\/strong> S\u00f3ng \u00e2m truy\u1ec1n trong kh\u00f4ng kh\u00ed v\u1edbi t\u1ed1c \u0111\u1ed9 340 m\/s v\u00e0 t\u1ea7n s\u1ed1 170 Hz. T\u00ednh b\u01b0\u1edbc s\u00f3ng.<\/p>\n<ul>\n<li>B\u01b0\u1edbc 1: D\u1eef ki\u1ec7n: v = 340 m\/s, f = 170 Hz.<\/li>\n<li>B\u01b0\u1edbc 2: \u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c \u03bb = v \/ f.<\/li>\n<li>B\u01b0\u1edbc 3: Thay s\u1ed1: \u03bb = 340 \/ 170 = 2 m.<\/li>\n<\/ul>\n<p><strong>B\u00e0i 3:<\/strong> M\u1ed9t s\u00f3ng c\u01a1 c\u00f3 chu k\u1ef3 0,02 s v\u00e0 b\u01b0\u1edbc s\u00f3ng 6 m. T\u00ednh t\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u00f3ng.<\/p>\n<ul>\n<li>B\u01b0\u1edbc 1: D\u1eef ki\u1ec7n: T = 0,02 s, \u03bb = 6 m.<\/li>\n<li>B\u01b0\u1edbc 2: \u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c v = \u03bb \/ T.<\/li>\n<li>B\u01b0\u1edbc 3: Thay s\u1ed1: v = 6 \/ 0,02 = 300 m\/s.<\/li>\n<\/ul>\n<p><strong>B\u00e0i 4:<\/strong> M\u1ed9t s\u00f3ng c\u01a1 truy\u1ec1n v\u1edbi t\u1ed1c \u0111\u1ed9 320 m\/s v\u00e0 b\u01b0\u1edbc s\u00f3ng 0,8 m. T\u00ednh t\u1ea7n s\u1ed1 v\u00e0 chu k\u1ef3 c\u1ee7a s\u00f3ng.<\/p>\n<ul>\n<li>B\u01b0\u1edbc 1: D\u1eef ki\u1ec7n: v = 320 m\/s, \u03bb = 0,8 m.<\/li>\n<li>B\u01b0\u1edbc 2: T\u00ednh t\u1ea7n s\u1ed1 theo f = v \/ \u03bb = 320 \/ 0,8 = 400 Hz.<\/li>\n<li>B\u01b0\u1edbc 3: T\u00ednh chu k\u1ef3 theo T = 1 \/ f = 1 \/ 400 = 0,0025 s.<\/li>\n<\/ul>\n<p><strong>B\u00e0i 5 (tr\u1eafc nghi\u1ec7m):<\/strong> S\u00f3ng \u00e2m truy\u1ec1n trong kh\u00f4ng kh\u00ed l\u00e0 lo\u1ea1i s\u00f3ng n\u00e0o? A. S\u00f3ng ngang. B. S\u00f3ng d\u1ecdc. C. S\u00f3ng \u0111i\u1ec7n t\u1eeb. D. S\u00f3ng \u00e1nh s\u00e1ng.<\/p>\n<ul>\n<li>\u0110\u00e1p \u00e1n: B. S\u00f3ng \u00e2m trong kh\u00f4ng kh\u00ed l\u00e0 s\u00f3ng d\u1ecdc v\u00ec c\u00e1c ph\u1ea7n t\u1eed kh\u00ed dao \u0111\u1ed9ng c\u00f9ng ph\u01b0\u01a1ng v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng.<\/li>\n<\/ul>\n<p><strong>Xem th\u00eam: <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/dong-nang-la-gi\/\">\u0110\u1ed9ng n\u0103ng l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c W\u0111 = \u00bdmv\u00b2 v\u00e0 \u0111\u1ecbnh l\u00fd \u0111\u1ed9ng n\u0103ng<\/a><\/strong><br \/>\n<img decoding=\"async\" class=\"size-full wp-image-569774 aligncenter\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-3.jpg\" alt=\"song-co-3\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/song-co-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>Nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p khi h\u1ecdc s\u00f3ng c\u01a1<\/h2>\n<p>Khi l\u00e0m b\u00e0i t\u1eadp v\u1ec1 s\u00f3ng c\u01a1, h\u1ecdc sinh th\u01b0\u1eddng m\u1eafc m\u1ed9t s\u1ed1 l\u1ed7i ph\u1ed5 bi\u1ebfn sau \u0111\u00e2y.<\/p>\n<ul>\n<li>Nh\u1ea7m l\u1eabn r\u1eb1ng c\u00e1c ph\u1ea7n t\u1eed m\u00f4i tr\u01b0\u1eddng di chuy\u1ec3n theo s\u00f3ng, trong khi th\u1ef1c t\u1ebf ch\u00fang ch\u1ec9 dao \u0111\u1ed9ng t\u1ea1i ch\u1ed7 quanh v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng.<\/li>\n<li>Cho r\u1eb1ng s\u00f3ng c\u01a1 truy\u1ec1n \u0111\u01b0\u1ee3c trong ch\u00e2n kh\u00f4ng. Th\u1ef1c t\u1ebf s\u00f3ng c\u01a1 lu\u00f4n c\u1ea7n m\u00f4i tr\u01b0\u1eddng v\u1eadt ch\u1ea5t, ch\u1ec9 c\u00f3 s\u00f3ng \u0111i\u1ec7n t\u1eeb m\u1edbi truy\u1ec1n \u0111\u01b0\u1ee3c trong ch\u00e2n kh\u00f4ng.<\/li>\n<li>Qu\u00ean \u0111\u1ed5i \u0111\u01a1n v\u1ecb v\u1ec1 h\u1ec7 SI tr\u01b0\u1edbc khi thay v\u00e0o c\u00f4ng th\u1ee9c, d\u1eabn \u0111\u1ebfn k\u1ebft qu\u1ea3 sai l\u1ec7ch.<\/li>\n<li>Nh\u1ea7m l\u1eabn gi\u1eefa s\u00f3ng ngang v\u00e0 s\u00f3ng d\u1ecdc, \u0111\u1eb7c bi\u1ec7t l\u00e0 qu\u00ean r\u1eb1ng s\u00f3ng \u00e2m trong kh\u00f4ng kh\u00ed l\u00e0 s\u00f3ng d\u1ecdc ch\u1ee9 kh\u00f4ng ph\u1ea3i s\u00f3ng ngang.<\/li>\n<li>Cho r\u1eb1ng t\u1ea7n s\u1ed1 s\u00f3ng thay \u0111\u1ed5i khi sang m\u00f4i tr\u01b0\u1eddng kh\u00e1c. Th\u1ef1c t\u1ebf t\u1ea7n s\u1ed1 lu\u00f4n b\u1eb1ng t\u1ea7n s\u1ed1 c\u1ee7a ngu\u1ed3n, ch\u1ec9 c\u00f3 t\u1ed1c \u0111\u1ed9 v\u00e0 b\u01b0\u1edbc s\u00f3ng thay \u0111\u1ed5i.<\/li>\n<\/ul>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 s\u00f3ng c\u01a1<\/h2>\n<h3>S\u00f3ng c\u01a1 l\u00e0 g\u00ec?<\/h3>\n<p>S\u00f3ng c\u01a1 l\u00e0 dao \u0111\u1ed9ng c\u01a1 lan truy\u1ec1n trong m\u00f4i tr\u01b0\u1eddng v\u1eadt ch\u1ea5t nh\u01b0 r\u1eafn, l\u1ecfng, kh\u00ed v\u00e0 kh\u00f4ng truy\u1ec1n \u0111\u01b0\u1ee3c trong ch\u00e2n kh\u00f4ng.<\/p>\n<h3>C\u00f3 m\u1ea5y lo\u1ea1i s\u00f3ng c\u01a1?<\/h3>\n<p>C\u00f3 hai lo\u1ea1i s\u00f3ng c\u01a1 l\u00e0 s\u00f3ng ngang (ph\u01b0\u01a1ng dao \u0111\u1ed9ng vu\u00f4ng g\u00f3c v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng) v\u00e0 s\u00f3ng d\u1ecdc (ph\u01b0\u01a1ng dao \u0111\u1ed9ng tr\u00f9ng v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng).<\/p>\n<h3>B\u01b0\u1edbc s\u00f3ng l\u00e0 g\u00ec?<\/h3>\n<p>B\u01b0\u1edbc s\u00f3ng l\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng s\u00f3ng truy\u1ec1n \u0111\u01b0\u1ee3c trong m\u1ed9t chu k\u1ef3, hay kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111i\u1ec3m g\u1ea7n nhau nh\u1ea5t dao \u0111\u1ed9ng c\u00f9ng pha.<\/p>\n<h3>C\u00f4ng th\u1ee9c t\u00ednh b\u01b0\u1edbc s\u00f3ng l\u00e0 g\u00ec?<\/h3>\n<p>C\u00f4ng th\u1ee9c t\u00ednh b\u01b0\u1edbc s\u00f3ng l\u00e0 \u03bb = v \u00d7 T = v \/ f, trong \u0111\u00f3 v l\u00e0 t\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u00f3ng, T l\u00e0 chu k\u1ef3 v\u00e0 f l\u00e0 t\u1ea7n s\u1ed1.<\/p>\n<h3>S\u00f3ng c\u01a1 c\u00f3 truy\u1ec1n \u0111\u01b0\u1ee3c trong ch\u00e2n kh\u00f4ng kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng, s\u00f3ng c\u01a1 c\u1ea7n m\u00f4i tr\u01b0\u1eddng v\u1eadt ch\u1ea5t \u0111\u1ec3 truy\u1ec1n n\u00ean kh\u00f4ng th\u1ec3 lan truy\u1ec1n trong ch\u00e2n kh\u00f4ng.<\/p>\n<h3>S\u00f3ng \u00e2m l\u00e0 s\u00f3ng d\u1ecdc hay s\u00f3ng ngang?<\/h3>\n<p>S\u00f3ng \u00e2m truy\u1ec1n trong kh\u00f4ng kh\u00ed l\u00e0 s\u00f3ng d\u1ecdc, v\u00ec c\u00e1c ph\u1ea7n t\u1eed kh\u00f4ng kh\u00ed dao \u0111\u1ed9ng c\u00f9ng ph\u01b0\u01a1ng v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng.<\/p>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"S\u00f3ng c\u01a1 l\u00e0 g\u00ec?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"S\u00f3ng c\u01a1 l\u00e0 dao \u0111\u1ed9ng c\u01a1 lan truy\u1ec1n trong m\u00f4i tr\u01b0\u1eddng v\u1eadt ch\u1ea5t nh\u01b0 r\u1eafn, l\u1ecfng, kh\u00ed v\u00e0 kh\u00f4ng truy\u1ec1n \u0111\u01b0\u1ee3c trong ch\u00e2n kh\u00f4ng.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"C\u00f3 m\u1ea5y lo\u1ea1i s\u00f3ng c\u01a1?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"C\u00f3 hai lo\u1ea1i s\u00f3ng c\u01a1 l\u00e0 s\u00f3ng ngang c\u00f3 ph\u01b0\u01a1ng dao \u0111\u1ed9ng vu\u00f4ng g\u00f3c v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng v\u00e0 s\u00f3ng d\u1ecdc c\u00f3 ph\u01b0\u01a1ng dao \u0111\u1ed9ng tr\u00f9ng v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"B\u01b0\u1edbc s\u00f3ng l\u00e0 g\u00ec?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"B\u01b0\u1edbc s\u00f3ng l\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng s\u00f3ng truy\u1ec1n \u0111\u01b0\u1ee3c trong m\u1ed9t chu k\u1ef3, hay kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111i\u1ec3m g\u1ea7n nhau nh\u1ea5t dao \u0111\u1ed9ng c\u00f9ng pha.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"C\u00f4ng th\u1ee9c t\u00ednh b\u01b0\u1edbc s\u00f3ng l\u00e0 g\u00ec?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"C\u00f4ng th\u1ee9c t\u00ednh b\u01b0\u1edbc s\u00f3ng l\u00e0 lambda = v nh\u00e2n T = v chia f, trong \u0111\u00f3 v l\u00e0 t\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u00f3ng, T l\u00e0 chu k\u1ef3 v\u00e0 f l\u00e0 t\u1ea7n s\u1ed1.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"S\u00f3ng c\u01a1 c\u00f3 truy\u1ec1n \u0111\u01b0\u1ee3c trong ch\u00e2n kh\u00f4ng kh\u00f4ng?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Kh\u00f4ng, s\u00f3ng c\u01a1 c\u1ea7n m\u00f4i tr\u01b0\u1eddng v\u1eadt ch\u1ea5t \u0111\u1ec3 truy\u1ec1n n\u00ean kh\u00f4ng th\u1ec3 lan truy\u1ec1n trong ch\u00e2n kh\u00f4ng.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"S\u00f3ng \u00e2m l\u00e0 s\u00f3ng d\u1ecdc hay s\u00f3ng ngang?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"S\u00f3ng \u00e2m truy\u1ec1n trong kh\u00f4ng kh\u00ed l\u00e0 s\u00f3ng d\u1ecdc v\u00ec c\u00e1c ph\u1ea7n t\u1eed kh\u00f4ng kh\u00ed dao \u0111\u1ed9ng c\u00f9ng ph\u01b0\u01a1ng v\u1edbi ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng.\"\n      }\n    }\n  ]\n}\n<\/script><\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>T\u00f3m l\u1ea1i, s\u00f3ng c\u01a1 l\u00e0 dao \u0111\u1ed9ng lan truy\u1ec1n trong m\u00f4i tr\u01b0\u1eddng v\u1eadt ch\u1ea5t, g\u1ed3m hai lo\u1ea1i l\u00e0 s\u00f3ng ngang v\u00e0 s\u00f3ng d\u1ecdc, v\u1edbi c\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n v = \u03bbf = \u03bb\/T. N\u1eafm v\u1eefng c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng, c\u00f4ng th\u1ee9c v\u00e0 tr\u00e1nh nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p s\u1ebd gi\u00fap b\u1ea1n h\u1ecdc t\u1ed1t ch\u01b0\u01a1ng S\u00f3ng c\u01a1 v\u00e0 S\u00f3ng \u00e2m. \u0110\u1ec3 h\u1ecdc th\u00eam, m\u1eddi b\u1ea1n tham kh\u1ea3o c\u00e1c b\u00e0i <strong><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/cong-thuc-tinh-quang-duong\/\">c\u00f4ng th\u1ee9c t\u00ednh qu\u00e3ng \u0111\u01b0\u1eddng<\/a>, <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/1-nam-anh-sang-bang-bao-nhieu-km\/\">m\u1ed9t n\u0103m \u00e1nh s\u00e1ng b\u1eb1ng bao nhi\u00eau km<\/a> v\u00e0 <\/strong><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/cong-thuc-tinh-dien-tro\/\"><strong>c\u00f4ng th\u1ee9c t\u00ednh \u0111i\u1ec7n tr\u1edf<\/strong><\/a> v\u00e0 <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/cam-ung-dien-tu\/\"><strong>c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb<\/strong><\/a> tr\u00ean chuy\u00ean m\u1ee5c tin t\u1ee9c c\u1ee7a <strong>Ho\u00e0ng H\u00e0 Mobile<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n \u0111\u00e3 bao gi\u1edd th\u1ea3 m\u1ed9t vi\u00ean s\u1ecfi xu\u1ed1ng m\u1eb7t h\u1ed3 v\u00e0 th\u1ea5y nh\u1eefng v\u00f2ng tr\u00f2n lan r\u1ed9ng ra ch\u01b0a? \u0110\u00f3 ch\u00ednh l\u00e0 h\u00ecnh \u1ea3nh tr\u1ef1c quan nh\u1ea5t v\u1ec1 s\u00f3ng c\u01a1. S\u00f3ng c\u01a1 l\u00e0 dao \u0111\u1ed9ng c\u01a1 h\u1ecdc lan truy\u1ec1n trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng v\u1eadt ch\u1ea5t nh\u01b0 r\u1eafn, l\u1ecfng ho\u1eb7c kh\u00ed, v\u00e0 \u0111i\u1ec1u \u0111\u1eb7c bi\u1ec7t [&hellip;]<\/p>\n","protected":false},"author":65,"featured_media":569771,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"s\u00f3ng c\u01a1 l\u00e0 g\u00ec","_yoast_wpseo_title":"S\u00f3ng c\u01a1 l\u00e0 g\u00ec? Ph\u00e2n lo\u1ea1i v\u00e0 c\u00f4ng th\u1ee9c b\u01b0\u1edbc s\u00f3ng","_yoast_wpseo_metadesc":"S\u00f3ng c\u01a1 l\u00e0 g\u00ec? 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