{"id":1017,"date":"2021-10-08T13:02:17","date_gmt":"2021-10-08T13:02:17","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=1017"},"modified":"2022-02-16T18:44:42","modified_gmt":"2022-02-16T11:44:42","slug":"dinh-luat-phan-xa-anh-sang-la-gi-ban-co-biet-kien-thuc-ly-7","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/dinh-luat-phan-xa-anh-sang-la-gi-ban-co-biet-kien-thuc-ly-7\/","title":{"rendered":"\u0110\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 g\u00ec b\u1ea1n c\u00f3 bi\u1ebft? Ki\u1ebfn th\u1ee9c l\u00fd 7"},"content":{"rendered":"\n<script type=\"text\/javascript\">\nimg_numb = 10;\n<\/script>\n\n\n\n<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Hi\u1ec7n t\u01b0\u1ee3ng v\u00e0 \u0111\u1ecbnh lu\u1eadt Ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/ozikq5yzGTc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption>Hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<\/figcaption><\/figure>\n\n\n\n<p>Ki\u1ebfn th\u1ee9c v\u1eadt l\u00fd 7 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 n\u1eb7ng v\u00e0 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a>. \u0110\u00e2y l\u00e0 nh\u1eefng chia s\u1ebb n\u1ec1n t\u1ea3ng, gi\u00fap cho c\u00e1c em c\u00f3 th\u1ec3 n\u1eafm \u0111\u01b0\u1ee3c nhi\u1ec1u ki\u1ebfn th\u1ee9c kh\u00f3 sau n\u00e0y. M\u1ed9t trong s\u1ed1 \u0111\u00f3 l\u00e0 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng. Ngo\u00e0i nh\u1eefng em <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a> trung h\u1ecdc c\u01a1 s\u1edf, r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi mu\u1ed1n bi\u1ebft th\u00eam v\u1ec1 ki\u1ebfn th\u1ee9c n\u00e0y. N\u1ebfu nh\u01b0 b\u1ea1n c\u0169ng \u0111ang mu\u1ed1n t\u00ecm hi\u1ec3u v\u00e0 \u0111\u1ecdc th\u00eam, h\u00e3y xem ngay b\u00e0i vi\u1ebft n\u00e0y nh\u00e9. Tin r\u1eb1ng nh\u1eefng chia s\u1ebb m\u00e0 ch\u00fang t\u00f4i mang \u0111\u1ebfn cho b\u1ea1n s\u1ebd l\u00e0m cho b\u1ea1n h\u00e0i l\u00f2ng. C\u00f9ng b\u1eaft \u0111\u1ea7u ngay th\u00f4i.<\/p>\n\n\n\n<p>\u0110\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 g\u00ec<\/p>\n\n\n\n<p>G\u01b0\u01a1ng ph\u1eb3ng l\u00e0 g\u00ec?<\/p>\n\n\n\n<p>G\u01b0\u01a1ng ph\u1eb3ng l\u00e0 m\u1ed9t trong nh\u1eefng v\u1eadt d\u1ee5ng v\u00f4 c\u00f9ng quan tr\u1ecdng. G\u01b0\u01a1ng ch\u00ednh l\u00e0 b\u1ec1 m\u1eb7t ph\u1ea3n x\u1ea1, v\u00e0 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a m\u1eb7t ph\u1eb3ng. G\u01b0\u01a1ng c\u00f3 t\u00e1c d\u1ee5ng ph\u1ea3n chi\u1ebfu l\u1ea1i \u00e1nh s\u00e1ng truy\u1ec1n t\u1edbi. Trong \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7, g\u01b0\u01a1ng l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/10\/c5622b4769f9ebd89708d5189671b1e9-1024x1024.jpg\" alt=\"\" class=\"wp-image-2342\" width=\"351\" height=\"351\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/10\/c5622b4769f9ebd89708d5189671b1e9.jpg 1024w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/10\/c5622b4769f9ebd89708d5189671b1e9-300x300.jpg 300w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/10\/c5622b4769f9ebd89708d5189671b1e9-150x150.jpg 150w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/10\/c5622b4769f9ebd89708d5189671b1e9-768x768.jpg 768w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/10\/c5622b4769f9ebd89708d5189671b1e9-900x900.jpg 900w\" sizes=\"(max-width: 351px) 100vw, 351px\" \/><figcaption>G\u01b0\u01a1ng ph\u1eb3ng<\/figcaption><\/figure>\n\n\n\n<p>T\u00ednh ch\u1ea5t c\u1ee7a g\u01b0\u01a1ng ph\u1eb3ng<\/p>\n\n\n\n<p>Tr\u01b0\u1edbc khi t\u00ecm hi\u1ec3u v\u1ec1 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng, b\u1ea1n n\u00ean bi\u1ebft nh\u1eefng t\u00ednh ch\u1ea5t c\u1ee7a g\u01b0\u01a1ng ph\u1eb3ng. \u0110\u00e2y s\u1ebd l\u00e0 c\u00e1ch \u0111\u1ec3 b\u1ea1n hi\u1ec3u r\u00f5 v\u1ec1 c\u00e1c \u0111\u1ecbnh lu\u1eadt c\u00f3 li\u00ean quan \u0111\u1ebfn \u00e1nh s\u00e1ng v\u00e0 g\u01b0\u01a1ng h\u01a1n.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>  G\u01b0\u01a1ng ph\u1eb3ng s\u1ebd cho ta \u1ea3nh \u1ea3o v\u1edbi v\u1eadt. \u1ea2nh \u1ea3o n\u00e0y c\u00f3 \u0111\u1ed9 l\u1edbn gi\u1ed1ng v\u1edbi v\u1eadt\n\n  Kho\u1ea3ng c\u00e1ch t\u1eeb \u1ea3nh \u0111\u1ebfn g\u01b0\u01a1ng s\u1ebd b\u1eb1ng v\u1edbi kho\u1ea3ng c\u00e1ch v\u1eadt \u0111\u1ebfn g\u01b0\u01a1ng. \u0110i\u1ec1u n\u00e0y \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c \u1ea3nh v\u00e0 v\u1eadt \u0111\u1ed1i x\u1ee9ng v\u1edbi nhau qua g\u01b0\u01a1ng.\n\n  \u1ea2nh \u1ea3o s\u1ebd kh\u00f4ng h\u1ee9ng \u0111\u01b0\u1ee3c \u1edf tr\u00ean m\u00e0n ch\u1eafn.\n\n  N\u1ebfu nh\u01b0 hai v\u1eadt c\u00f3 c\u00f9ng k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1ee9ng tr\u01b0\u1edbc g\u01b0\u01a1ng, ch\u1eafc ch\u1eafn \u0111i\u1ec1u n\u00e0y s\u1ebd x\u1ea3y ra. V\u1eadt n\u00e0o c\u00e1ch g\u01b0\u01a1ng xa h\u01a1n th\u00ec v\u1eadt \u0111\u00f3 s\u1ebd c\u00f3 \u1ea3nh nh\u1ecf h\u01a1n v\u1eadt kia.\n\n  H\u00ecnh c\u1ee7a m\u1ed9t v\u1eadt \u0111\u01b0\u1ee3c quan s\u00e1t \u1edf trong g\u01b0\u01a1ng s\u1ebd g\u1ecdi l\u00e0 \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt t\u1ea1o b\u1edfi g\u01b0\u01a1ng.<\/code><\/pre>\n\n\n\n<p>G\u01b0\u01a1ng ph\u1eb3ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u1edf \u0111\u00e2u?<\/p>\n\n\n\n<p>G\u01b0\u01a1ng ph\u1eb3ng l\u00e0 lo\u1ea1i g\u01b0\u01a1ng hay g\u1eb7p v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t. S\u1edf d\u0129 g\u01b0\u01a1ng c\u00f3 t\u00ean l\u00e0 g\u01b0\u01a1ng ph\u1eb3ng, b\u1edfi ch\u00fang c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng ph\u00e2n bi\u1ec7t v\u1edbi nh\u1eefng lo\u1ea1i g\u01b0\u01a1ng kh\u00e1c. Ngo\u00e0i g\u01b0\u01a1ng ph\u1eb3ng c\u00f2n c\u00f3 nh\u1eefng lo\u1ea1i g\u01b0\u01a1ng kh\u00e1c nhau nh\u01b0 g\u01b0\u01a1ng c\u1ea7u l\u1ed3i, g\u01b0\u01a1ng c\u1ea7u l\u00f5m.<\/p>\n\n\n\n<p>C\u00e1ch v\u1ebd h\u00ecnh ph\u1ea3n x\u1ea1 c\u1ea7n nh\u1eefng tia g\u00ec<\/p>\n\n\n\n<p>\u1ee8ng d\u1ee5ng c\u1ee7a g\u01b0\u01a1ng ph\u1eb3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf nhi\u1ec1u v\u1ecb tr\u00ed kh\u00e1c nhau. Nhi\u1ec1u ng\u01b0\u1eddi s\u1eed d\u1ee5ng g\u01b0\u01a1ng \u0111\u1ec3 l\u00e0m g\u01b0\u01a1ng soi, trang tr\u00ed ch\u1ed7 c\u1ea7n thi\u1ebft trong gia \u0111\u00ecnh. Nh\u1eefng n\u01a1i kh\u00f4ng th\u1ec3 thi\u1ebfu s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a g\u01b0\u01a1ng l\u00e0 ti\u1ec7m l\u00e0m \u0111\u1eb9p, hi\u1ec7u c\u1eaft t\u00f3c\u2026 Ngo\u00e0i ra, ch\u00fang c\u00f2n \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng \u1edf b\u00ean trong k\u00ednh nha khoa, k\u00ednh hi\u1ec3n vi, \u1ed1ng nh\u00f2m, k\u00ednh thi\u00ean v\u0103n\u2026<\/p>\n\n\n\n<p>\u0110\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 g\u00ec?<\/p>\n\n\n\n<p>Nhi\u1ec1u ng\u01b0\u1eddi kh\u00f4ng bi\u1ebft \u0111\u1ecbnh lu\u1eadt n\u00e0y l\u00e0 g\u00ec. Nh\u1ea5t l\u00e0 trong v\u1eadt l\u00fd 7 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u00f3 \u0111i\u1ec3m g\u00ec kh\u00e1c kh\u00f4ng? \u0110\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c \u0111\u1ecbnh lu\u1eadt n\u00e0y, m\u1ecdi ng\u01b0\u1eddi n\u00ean t\u00ecm hi\u1ec3u v\u1ec1 th\u00ed nghi\u1ec7m sau \u0111\u00e2y.<\/p>\n\n\n\n<p>C\u00e1ch th\u1ef1c hi\u1ec7n th\u00ed nghi\u1ec7m kh\u00f4ng c\u00f3 g\u00ec ph\u1ee9c t\u1ea1p. \u0110\u1ea7u ti\u00ean chi\u1ebfu tia s\u00e1ng c\u1ee7a \u0111\u00e8n pin l\u00ean tr\u00ean m\u1eb7t ph\u1eb3ng tr\u00ean b\u00e0n. Sau \u0111\u00f3, ta s\u1ebd thu \u0111\u01b0\u1ee3c m\u1ed9t v\u1ec7t s\u00e1ng tr\u00ean t\u01b0\u1eddng. \u0110\u00e2y l\u00e0 v\u00ed d\u1ee5 \u0111\u01a1n gi\u1ea3n v\u00e0 gi\u00fap <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a> d\u1ec5 h\u00ecnh dung nh\u1ea5t v\u1ec1 s\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng n\u00e0y.<\/p>\n\n\n\n<p>Do \u0111\u00f3, ta c\u00f3 th\u1ec3 hi\u1ec3u nh\u01b0 sau. Khi \u00e1nh s\u00e1ng ch\u1ea1m v\u00e0o b\u1ec1 m\u1eb7t ho\u1eb7c l\u00e0 ranh gi\u1edbi kh\u00e1c. Ch\u00fang kh\u00f4ng h\u1ea5p th\u1ee5 b\u1ee9c x\u1ea1, m\u00e0 ch\u00fang l\u00e0 cho s\u00f3ng \u00e1nh s\u00e1ng b\u1eadt ra kh\u1ecfi b\u1ec1 m\u1eb7t \u0111\u00f3.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"410\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/10\/dinh-luat-phan-xa-anh-sang-la-gi-1-1024x410.jpg\" alt=\"\u0110\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng\" class=\"wp-image-2340\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/10\/dinh-luat-phan-xa-anh-sang-la-gi-1-1024x410.jpg 1024w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/10\/dinh-luat-phan-xa-anh-sang-la-gi-1-300x120.jpg 300w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/10\/dinh-luat-phan-xa-anh-sang-la-gi-1-768x308.jpg 768w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/10\/dinh-luat-phan-xa-anh-sang-la-gi-1-1250x501.jpg 1250w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/10\/dinh-luat-phan-xa-anh-sang-la-gi-1-900x361.jpg 900w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/10\/dinh-luat-phan-xa-anh-sang-la-gi-1.jpg 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>\u0110\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<\/figcaption><\/figure>\n\n\n\n<p>N\u1ed9i dung c\u1ee7a \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng ra sao?<\/p>\n\n\n\n<p>Sau th\u00ed nghi\u1ec7m k\u1ec3 tr\u00ean, nhi\u1ec1u ng\u01b0\u1eddi mu\u1ed1n bi\u1ebft c\u00e1ch ph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng ra sao. Khi \u00e1nh s\u00e1ng b\u1ecb ph\u1ea3n x\u1ea1, tia ph\u1ea3n x\u1ea1 s\u1ebd n\u1eb1m \u1edf trong m\u1eb7t ph\u1eb3ng. \u0110\u00e2y l\u00e0 m\u1eb7t ph\u1eb3ng ch\u1ee9a tia t\u1edbi, c\u00f9ng ph\u00e1p tuy\u1ebfn \u1edf g\u01b0\u01a1ng \u1edf \u0111i\u1ec3m t\u1edbi.<\/p>\n\n\n\n<p>Ngo\u00e0i ra, theo \u0111\u1ecbnh lu\u1eadt, g\u00f3c ph\u1ea3n x\u1ea1 s\u1ebd b\u1eb1ng v\u1edbi g\u00f3c t\u1edbi.<\/p>\n\n\n\n<p>C\u00e1c em <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a> l\u01b0u \u00fd: H\u00e3y c\u1ed1 g\u1eafng h\u1ecdc thu\u1ed9c nh\u1eefng \u0111\u1ecbnh lu\u1eadt n\u00e0y. \u0110\u00e2y l\u00e0 ph\u1ea7n xu\u1ea5t hi\u1ec7n r\u1ea5t nhi\u1ec1u trong \u0111\u1ec1 thi, v\u00e0 n\u00f3 l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 c\u00e1c em l\u00e0m b\u00e0i t\u1eadp. N\u1eafm v\u1eefng nh\u1eefng <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n<\/a> s\u1ebd gi\u00fap c\u00e1c em t\u1ef1 tin l\u00e0m b\u00e0i t\u1eadp h\u01a1n nhi\u1ec1u.<\/p>\n\n\n\n<p>H\u00ecnh \u1ea3nh \u0111\u01b0\u1ee3c ph\u1ea3n x\u1ea1 trong th\u1ef1c t\u1ebf<\/p>\n\n\n\n<p>T\u1ed5ng h\u1ee3p m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<\/p>\n\n\n\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7. \u0110\u00e2y \u0111\u1ec1u l\u00e0 nh\u1eefng b\u00e0i t\u1eadp c\u01a1 b\u1ea3n v\u00e0 kh\u00f4ng \u0111\u00e1nh \u0111\u1ed1 <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a>. C\u00e1c em h\u00e3y c\u1ed1 g\u1eafng t\u1ef1 gi\u1ea3i nh\u1eefng b\u00e0i n\u00e0y tr\u01b0\u1edbc khi tham kh\u1ea3o \u0111\u00e1p \u00e1n b\u00ean d\u01b0\u1edbi nh\u00e9.<\/p>\n\n\n\n<p>B\u00e0i t\u1eadp<\/p>\n\n\n\n<p>C\u00e2u 1: Chi\u1ebfu m\u1ed9t tia s\u00e1ng \u0111\u1ebfn tr\u01b0\u1edbc g\u01b0\u01a1ng ph\u1eb3ng. Sau \u0111\u00f3, ta thu \u0111\u01b0\u1ee3c m\u1ed9t tia ph\u1ea3n x\u1ea1. Tia n\u00e0y t\u1ea1o v\u1edbi tia t\u1edbi m\u1ed9t g\u00f3c c\u00f3 gi\u00e1 tr\u1ecb l\u00e0 40 \u0111\u1ed9. T\u00ecm gi\u00e1 tr\u1ecb c\u1ee7a g\u00f3c t\u1edbi. H\u00e3y ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t v\u00e0 \u0111\u01b0a ra c\u00e1ch l\u00e0m c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<p>A 20<\/p>\n\n\n\n<p>B 40<\/p>\n\n\n\n<p>C 60<\/p>\n\n\n\n<p>D 80<\/p>\n\n\n\n<p>C\u00e2u 2: N\u1ed9i dung n\u00e0o sau \u0111\u00e2y kh\u00f4ng ch\u00ednh x\u00e1c v\u1edbi \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng?<\/p>\n\n\n\n<p>A G\u00f3c h\u1ee3p b\u1edfi tia t\u1edbi v\u00e0 ph\u00e1p tuy\u1ebfn c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng g\u00f3c h\u1ee3p b\u1edfi tia ph\u1ea3n x\u1ea1 v\u00e0 ph\u00e1p tuy\u1ebfn.<\/p>\n\n\n\n<p>B Tia ph\u1ea3n x\u1ea1 s\u1ebd n\u1eb1m trong m\u1eb7t ph\u1eb3ng ch\u1ee9a tia t\u1edbi v\u00e0 ph\u00e1p tuy\u1ebfn c\u1ee7a m\u1eb7t ph\u1eb3ng \u1edf g\u01b0\u01a1ng.<\/p>\n\n\n\n<p>C Tia ph\u1ea3n x\u1ea1 b\u1eb1ng v\u1edbi tia t\u1edbi<\/p>\n\n\n\n<p>D G\u00f3c ph\u1ea3n x\u1ea1 c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng v\u1edbi g\u00f3c t\u1edbi<\/p>\n\n\n\n<p>C\u00e2u 3: Chi\u1ebfu m\u1ed9t tia s\u00e1ng SI l\u00ean m\u1ed9t m\u1eb7t ph\u1eb3ng \u1edf trong g\u01b0\u01a1ng. Tia ph\u1ea3n x\u1ea1 g\u1ecdi l\u00e0 IR c\u1ee7a SI m\u00e0 ta thu \u0111\u01b0\u1ee3c s\u1ebd n\u1eb1m tr\u00ean m\u1eb7t ph\u1eb3ng n\u00e0o?<\/p>\n\n\n\n<p>A M\u1eb7t ph\u1eb3ng t\u1ea1o b\u1edfi tia t\u1edbi v\u00e0 ph\u00e1p tuy\u1ebfn c\u1ee7a g\u01b0\u01a1ng \u1edf \u0111i\u1ec3m t\u1edbi<\/p>\n\n\n\n<p>B M\u1eb7t ph\u1eb3ng t\u1ea1o b\u1edfi tia t\u1edbi v\u00e0 m\u1eb7t g\u01b0\u01a1ng<\/p>\n\n\n\n<p>C M\u1eb7t ph\u1eb3ng g\u01b0\u01a1ng<\/p>\n\n\n\n<p>D M\u1eb7t ph\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi tia t\u1edbi<\/p>\n\n\n\n<p>\u0110\u00e1p \u00e1n v\u00e0 gi\u1ea3i th\u00edch<\/p>\n\n\n\n<p>C\u00e2u 1, \u0110\u00e1p \u00e1n A<\/p>\n\n\n\n<p>Gi\u1ea3i th\u00edch: V\u00ec g\u00f3c t\u1edbi b\u1eb1ng v\u1edbi g\u00f3c ph\u1ea3n x\u1ea1. Th\u1ebf n\u00ean ph\u00e1p tuy\u1ebfn s\u1ebd \u0111\u01b0\u1ee3c coi l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi tia t\u1edbi v\u00e0 tia ph\u1ea3n x\u1ea1. Th\u1ebf n\u00ean, t\u1ed5ng c\u1ee7a hai g\u00f3c l\u00e0 40 \u0111\u1ed9, th\u00ec gi\u00e1 tr\u1ecb c\u1ee7a m\u1ed9t g\u00f3c s\u1ebd l\u00e0 20 \u0111\u1ed9.<\/p>\n\n\n\n<p>C\u00e2u 2, \u0110\u00e1p \u00e1n C<\/p>\n\n\n\n<p>B\u1edfi v\u00ec \u0111\u1ed9 d\u00e0i c\u00e1c tia l\u00e0 v\u00f4 h\u1ea1n. Th\u1ebf n\u00ean s\u1ebd kh\u00f4ng c\u00f3 s\u1ef1 so s\u00e1nh gi\u1eefa c\u00e1c tia v\u1edbi nhau. Do \u0111\u00f3 \u0111\u00e2y l\u00e0 \u0111\u00e1p \u00e1n sai.<\/p>\n\n\n\n<p>C\u00e2u 3, \u0110\u00e1p \u00e1n A<\/p>\n\n\n\n<p>D\u1ef1a theo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng, tia ph\u1ea3n x\u1ea1 s\u1ebd n\u1eb1m \u1edf trong m\u1eb7t ph\u1eb3ng c\u00f3 ch\u1ee9a tia t\u1edbi, c\u00f9ng v\u1edbi ph\u00e1p tuy\u1ebfn c\u1ee7a g\u01b0\u01a1ng \u1edf \u0111i\u1ec3m t\u1edbi. Th\u1ebf n\u00ean \u0111\u00e2y l\u00e0 \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t cho c\u00e2u h\u1ecfi n\u00e0y.<\/p>\n\n\n\n<p>Kinh nghi\u1ec7m \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec3m cao m\u00f4n v\u1eadt l\u00fd<\/p>\n\n\n\n<p>Sau khi \u0111\u00e3 hi\u1ec3u v\u1ec1 nh\u1eefng \u0111\u1ecbnh lu\u1eadt tr\u00ean, s\u1ebd c\u00f3 nhi\u1ec1u em th\u1eafc m\u1eafc l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ea1t \u0111i\u1ec3m cao m\u00f4n v\u1eadt l\u00fd. Th\u1ef1c t\u1ebf, \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec3m cao \u0111\u1ed1i v\u1edbi l\u00fd c\u1ea5p 2 kh\u00f4ng h\u1ec1 kh\u00f3. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e1ch \u0111\u1ec3 c\u00e1c em c\u00f3 th\u1ec3 <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc t\u1eadp<\/a>, b\u1ed3i d\u01b0\u1ee1ng cho b\u1ea3n th\u00e2n.<\/p>\n\n\n\n<p>Lu\u00f4n ghi nh\u1edb c\u00f4ng th\u1ee9c v\u1eadt l\u00fd<\/p>\n\n\n\n<p>C\u00f4ng th\u1ee9c v\u00e0 nh\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng v\u1eadt l\u00fd trong ch\u01b0\u01a1ng tr\u00ecnh l\u00fd c\u1ea5p 2 kh\u00f4ng qu\u00e1 nhi\u1ec1u. Do \u0111\u00f3, nh\u1edb \u0111\u01b0\u1ee3c \u0111\u1ea1i l\u01b0\u1ee3ng, c\u00f9ng v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c s\u1ebd gi\u00fap c\u00e1c em chinh ph\u1ee5c m\u00f4n n\u00e0y d\u1ec5 h\u01a1n. Ngo\u00e0i ra, nh\u1eefng c\u00f4ng th\u1ee9c v\u1eadt l\u00fd c\u00f3 li\u00ean quan \u0111\u1ebfn nhau. Th\u1ebf n\u00ean, \u0111i\u1ec1u n\u00e0y c\u00e0ng gi\u00fap c\u00e1c em c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng thu\u1ea7n th\u1ee5c h\u01a1n r\u1ea5t nhi\u1ec1u.<\/p>\n\n\n\n<p>M\u1ed9t tip nh\u1ecf cho c\u00e1c em, l\u00e0 h\u00e3y ghi nh\u1edb c\u1ea3 \u0111\u01a1n v\u1ecb c\u1ee7a m\u1ed7i c\u00f4ng th\u1ee9c c\u1ea7n t\u00ednh. Ch\u00ednh nh\u1edd nh\u1eefng \u0111\u01a1n v\u1ecb n\u00e0y c\u00f3 th\u1ec3 gi\u00fap c\u00e1c em hi\u1ec3u \u0111\u01b0\u1ee3c c\u00f4ng th\u1ee9c h\u01a1n. T\u1eeb \u0111\u00f3 gi\u1ea3i \u0111\u01b0\u1ee3c nh\u1eefng b\u00e0i t\u1eadp kh\u00f3 m\u00e0 kh\u00f4ng b\u1ecb t\u1ed1n qu\u00e1 nhi\u1ec1u th\u1eddi gian.<\/p>\n\n\n\n<p>C\u1ed1 g\u1eafng l\u00e0m nhi\u1ec1u b\u00e0i t\u1eadp \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<\/p>\n\n\n\n<p>\u00d4n luy\u1ec7n ch\u00ednh l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a s\u1ef1 th\u00e0nh c\u00f4ng. B\u1ea5t c\u1ee9 ai mu\u1ed1n \u0111\u01b0\u1ee3c \u0111i\u1ec3m cao c\u0169ng ph\u1ea3i ch\u0103m ch\u1ec9 l\u00e0m nhi\u1ec1u b\u00e0i t\u1eadp. N\u1ebfu th\u1ea5y kh\u00f3 kh\u0103n trong vi\u1ec7c ghi nh\u1edb \u0111\u01b0\u1ee3c c\u00f4ng th\u1ee9c, c\u00e1c em h\u00e3y l\u00e0m nhi\u1ec1u b\u00e0i t\u1eadp. Vi\u1ec7c \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c nh\u1eefng b\u00e0i t\u00e2p n\u00e0y v\u00e0 ghi nh\u1edb c\u00e1ch l\u00e0m c\u1ee7a ch\u00fang r\u1ea5t t\u1ed1t. Vi\u1ec7c n\u00e0y s\u1ebd gi\u00fap c\u00e1c em kh\u00f4ng lo s\u1ee3 khi g\u1eb7p b\u00e0i t\u1eadp m\u1edbi, t\u1eeb \u0111\u00f3 t\u1ef1 tin h\u01a1n.<\/p>\n\n\n\n<p>\u1ee8ng d\u1ee5ng \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<\/p>\n\n\n\n<p>Tr\u00ean \u0111\u00e2y l\u00e0 nh\u1eefng th\u00f4ng tin ch\u00fang t\u00f4i mang \u0111\u1ebfn cho c\u00e1c b\u1ea1n \u0111\u1ecdc v\u1ec1 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng. \u0110\u00e2y l\u00e0 \u0111\u1ecbnh lu\u1eadt c\u01a1 b\u1ea3n kh\u00f4ng kh\u00f3. Th\u1ebf n\u00ean h\u00e3y c\u1ed1 g\u1eafng \u0111\u1ecdc th\u1eadt k\u1ef9 v\u00e0 \u00e1p d\u1ee5ng nhu\u1ea7n nhuy\u1ec5n b\u1ea1n nh\u00e9. \u0110\u1eebng qu\u00ean \u0111\u1ecdc th\u00eam nh\u1eefng b\u00e0i kh\u00e1c \u0111\u1ec3 c\u00f3 th\u1ec3 hi\u1ec3u th\u00eam v\u1ec1 ki\u1ebfn th\u1ee9c v\u1eadt l\u00fd c\u1ea5p 2! V\u00ed d\u1ee5 b\u00e0i vi\u1ebft v\u1ec1 s\u1ef1 truy\u1ec1n \u00e1nh s\u00e1ng c\u0169ng c\u1ef1c k\u1ef3 b\u1ed5 \u00edch, h\u00e3y click ngay nh\u00e9.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Reflection of Light | Don&#039;t Memorise\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/skGmQC87Bvg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption>Reflection of Light | Don&#8217;t Memorise<\/figcaption><\/figure>\n\n\n\n\n\n<div style=\"display:none\">\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e1t bi\u1ec3u n\u1ed9i dung \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 g\u00ec<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng th\u00ec<br>\nph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 g\u00ec<br>\nn\u00eau \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntrong \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n<br>\nb\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nn\u1ed9i dung c\u1ee7a \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng<br>\nth\u1ebf n\u00e0o l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng ta c\u00f3<br>\nv\u1eadt l\u00fd 7 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 c\u1ee7a \u00e1nh s\u00e1ng<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 c\u1ee7a \u00e1nh s\u00e1ng<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng tr\u00ean g\u01b0\u01a1ng c\u1ea7u l\u00f5m<br>\nn\u00eau n\u1ed9i dung \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ngi\u1ea3i b\u00e0i t\u1eadp v\u1eadt l\u00fd 7 b\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 g\u00ec<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 g\u00ec<br>\ndinh luat phan xa anh sang<br>\ntrong hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng tia t\u1edbi l\u00e0<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng sbt<br>\ngi\u1ea3i b\u00e0i t\u1eadp v\u1eadt l\u00fd l\u1edbp 7 b\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nh\u00e3y ph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntrong hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nd\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhi\u1ec7n t\u01b0\u1ee3ng n\u00e0o l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nlu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp v\u1ec1 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntrong \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng th\u00ec<br>\nn\u00eau s\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng tr\u00ean g\u01b0\u01a1ng c\u1ea7u l\u00f5m<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng g\u00f3c ph\u1ea3n x\u1ea1<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng g\u00ec<br>\nv\u00ed d\u1ee5 v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nn\u1ed9i dung c\u1ee7a \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng v\u1eadt l\u00fd 7<br>\nv\u1ebd h\u00ecnh \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nem h\u00e3y ph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntrong hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng th\u00ec<br>\nb\u00e0i t\u1eadp \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\n\u00e1nh s\u00e1ng n\u00e0o d\u01b0\u1edbi \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1? khi \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c ph\u00e1t ra t\u1eeb<br>\n\u1ee9ng d\u1ee5ng \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nm\u00e0u n\u00e0o ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng t\u1ed1t nh\u1ea5t<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng.<br>\nb\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng sbt<br>\nth\u1ebf n\u00e0o l\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntr\u00ecnh b\u00e0y \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nch\u1ecdn c\u00e2u sai theo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nc\u00e1ch v\u1ebd tia ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng xu\u1ea5t hi\u1ec7n trong<br>\nv\u1ebd h\u00ecnh minh h\u1ecda \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nbi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e2n bi\u1ec7t hi\u1ec7n t\u01b0\u1ee3ng kh\u00fac x\u1ea1 v\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nc\u00f4ng th\u1ee9c \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nn\u1ed9i dung \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nn\u00eau n\u1ed9i dung c\u1ee7a \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nso\u1ea1n b\u00e0i \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0<br>\nph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u1ee7a m\u1eaft<br>\nv\u00ed d\u1ee5 v\u1ec1 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nphan xa anh sang<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng &#8211; v\u1eadt l\u00fd 7<br>\nh\u00e3y n\u00eau \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng<br>\nth\u00ed nghi\u1ec7m \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nkhi n\u00e0o c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 j<br>\nc\u00e1ch v\u1ebd \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntr\u00ecnh b\u00e0y n\u1ed9i dung \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nkhi n\u00e0o th\u00ec c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e1t bi\u1ec3u v\u1ec1 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nkhi \u00e1nh s\u00e1ng \u0111i t\u1eeb n\u01b0\u1edbc (n=4\/3) sang kh\u00f4ng kh\u00ed g\u00f3c gi\u1edbi h\u1ea1n ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n c\u00f3 gi\u00e1 tr\u1ecb l\u00e0<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 g\u00ec<br>\nkhi x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111l ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nem h\u00e3y n\u00eau \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u1eadt l\u00fd l\u1edbp 7 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0<br>\nth\u1ebf n\u00e0o l\u00e0 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nl\u00fd thuy\u1ebft \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng x\u1ea3y ra khi<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng \u00e1p d\u1ee5ng \u0111\u00fang cho \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a c\u00e1c tia s\u00e1ng t\u1edbi:<br>\nv\u1eadn d\u1ee5ng \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u1ee9ng d\u1ee5ng hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u1eadt l\u00fd \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng cho bi\u1ebft<br>\nph\u00e1t bi\u1ec3u n\u1ed9i dung \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng.<br>\nso s\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhi\u1ec7n t\u01b0\u1ee3ng n\u00e0o sau \u0111\u00e2y l\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u1ebd \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp v\u1eadt l\u00fd \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nkh\u00e1m ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nphat bieu dinh luat phan xa anh sang<br>\nn\u00eau \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 c\u1ee7a \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp v\u1eadt l\u00fd 7 b\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp v\u1ec1 kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n<br>\nn\u1ed9i dung kh\u00f4ng thu\u1ed9c \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u1ebd h\u00ecnh bi\u1ec3u di\u1ec5n \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u1ee9ng d\u1ee5ng c\u1ee7a \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e1t bi\u1ec3u \u0111\u01b0\u1ee3c \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0<br>\nc\u00e1ch t\u00ednh \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nch\u1ecdn c\u00e2u \u0111\u00fang theo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nc\u00e1c b\u00e0i t\u1eadp v\u1ec1 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ng\u01b0\u01a1ng c\u1ea7u l\u00f5m c\u00f3 m\u1eb7t ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng b\u00e0i t\u1eadp<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng th\u00ec g\u00f3c<br>\nsbt v\u1eadt l\u00fd 7 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nchuy\u00ean \u0111\u1ec1 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nso\u1ea1n b\u00e0i \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ngi\u1ea3i b\u00e0i t\u1eadp \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nn\u1ed9i dung \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 g\u00ec l\u1edbp 7<br>\n\u0111\u1eb7c \u0111i\u1ec3m ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng tr\u00ean g\u01b0\u01a1ng c\u1ea7u l\u00f5m<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7 sbt<br>\nb\u00e0i t\u1eadp kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n<br>\ntr\u1eafc nghi\u1ec7m kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng s\u00e1ch b\u00e0i t\u1eadp<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng th\u00ec<br>\ncho v\u00ed d\u1ee5 v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nc\u00f4ng th\u1ee9c ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nh\u00ecnh \u1ea3nh ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi ph\u1ea3n x\u1ea1 t\u1eeb thi\u00ean v\u01b0\u01a1ng tinh c\u00f3 m\u00e0u g\u00ec<br>\nsbt \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng g\u00f3c t\u1edbi<br>\nth\u1ebf n\u00e0o l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng?<br>\n\u0111\u1ecbnh lu\u1eadt c\u1ee7a ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng.<br>\nm\u1eb7t ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u1ee7a g\u01b0\u01a1ng c\u1ea7u l\u00f5m l\u00e0<br>\nkh\u00fac x\u1ea1 v\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nkhi x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng g\u00f3c ph\u1ea3n x\u1ea1 kh\u00f4ng th\u1ec3 l\u1edbn h\u01a1n<br>\nth\u00ed nghi\u1ec7m ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111inh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u1ebd \u1ea3nh theo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nh\u1ec7 s\u1ed1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhien tuong phan xa anh sang<br>\n\u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1<br>\nn\u00eau v\u00ed d\u1ee5 v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng tr\u00ean g\u01b0\u01a1ng ph\u1eb3ng<br>\ntr\u1eafc nghi\u1ec7m \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u00e1p d\u1ee5ng \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng tia ph\u1ea3n x\u1ea1<br>\nh\u1ec7 s\u1ed1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u1ee7a v\u1eadt li\u1ec7u<br>\n\u0111\u1ecbnh l\u00fd ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nbai tap dinh luat phan xa anh sang<br>\nh\u00ecnh \u1ea3nh \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e2n bi\u1ec7t hi\u1ec7n t\u01b0\u1ee3ng kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng vietjack<br>\nph\u00e1t tri\u1ec3n \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng v\u1eadt l\u00fd l\u1edbp 7<br>\n\u0111\u1ecbnh lu\u00e2t ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0<br>\nc\u00e1ch l\u00e0m b\u00e0i \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng v\u1ebd h\u00ecnh minh h\u1ecda<br>\nh\u00ecnh v\u1ebd \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nbt \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng violet<br>\n\u0111\u1ecbnh lu\u1eadn ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u1ee7a g\u01b0\u01a1ng c\u1ea7u l\u1ed3i<br>\nb\u00e0i t\u1eadp ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e1t bi\u1ec3u \u0111i\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng b\u00e0i t\u1eadp<br>\ntr\u01b0\u1eddng h\u1ee3p n\u00e0o c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntia ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nt\u1ea1i sao g\u01b0\u01a1ng c\u00f3 th\u1ec3 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntr\u1eafc nghi\u1ec7m b\u00e0i \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e1t bi\u1ec3u nd \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nc\u00e1ch t\u00ednh g\u00f3c ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhien tuong phan xa anh sang la<br>\ngi\u1ea3i s\u00e1ch b\u00e0i t\u1eadp \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\nthi nghiem phan xa anh sang<br>\nhi\u1ec7n t\u01b0\u1ee3ng n\u00e0o d\u01b0\u1edbi \u0111\u00e2y c\u00f3 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhay ph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng tr\u00ean g\u01b0\u01a1ng c\u1ea7u l\u00f5m<br>\nph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\nkim lo\u1ea1i ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng t\u1ed1t nh\u1ea5t<br>\ncho v\u00ed d\u1ee5 v\u1ec1 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u1ea3n x\u1ea1 \u0111\u1ed3ng t\u1eed v\u1edbi \u00e1nh s\u00e1ng<br>\nv\u1eadt l\u00fd l\u1edbp 7 b\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh ngh\u0129a ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng th\u00ec g\u00f3c ph\u1ea3n x\u1ea1<br>\nt\u00ednh ch\u1ea5t ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nn\u00eau \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng.<br>\n\u0111\u1ecbnh lu\u1ea1t ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt c\u1ee7a ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nkhi c\u00f3 ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n th\u00ec to\u00e0n b\u1ed9 \u00e1nh s\u00e1ng<br>\n\u0111\u1ed9 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntrong \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng g\u00f3c ph\u1ea3n x\u1ea1<br>\nm\u00e0u ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ngi\u1ea3i b\u00e0i t\u1eadp \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\nquy lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u00f3 m\u1ea5y \u00fd<br>\n\u0111\u1ecbnh lu\u1eadt phan xa \u00e1nh s\u00e1ng<br>\nv\u00ed d\u1ee5 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nbi\u1ec3u n\u1ed9i dung \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nh\u1ea5p th\u1ee5 v\u00e0 ph\u1ea3n x\u1ea1 l\u1ecdc l\u1ef1a \u00e1nh s\u00e1ng<br>\nphan xa anh sang la gi<br>\n\u0111inh luat phan xa anh sang<br>\nbai tap dinh luat phan xa anh sang lop 7<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng trong t\u1ef1 nhi\u00ean<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng 7<br>\nph\u00e1t bi\u1ec3u \u0111\u00fang c\u1ee7a \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ngi\u1ea3i b\u00e0i t\u1eadp v\u1eadt l\u00ed 7 b\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ngi\u1ea3i \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u1ee9ng d\u1ee5ng c\u1ee7a \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng trong th\u1ef1c t\u1ebf<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 v\u00e0 kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u1eadt l\u00fd 7 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nn\u1ed9i dung chung c\u1ee7a \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nbai tap vat ly dinh luat phan xa anh sang<br>\nv\u1eadt l\u00fd b\u00e0i \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nkh\u00fac x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n<br>\nhi\u1ec7n t\u01b0\u1ee3ng kh\u00fac x\u1ea1 v\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nphat bieu noi dung dinh luat phan xa anh sang<br>\nhien tuong phan xa anh sang la gi<br>\nc\u00f4ng th\u1ee9c t\u00ednh \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i gi\u1ea3ng \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\nb\u00e0i t\u1eadp v\u1ec1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\nn\u00eau \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u1ee7a ai<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng n\u00eau nh\u01b0 th\u1ebf n\u00e0o<br>\nkh\u00fac x\u1ea1 \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng v\u1ebd h\u00ecnh<br>\nbai tap \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i gi\u1ea3ng \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00fd thuy\u1ebft<br>\nph\u00e1t bi\u1ec3u ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u1eadt li\u1ec7u ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u1eadt l\u00fd 7 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng violet<br>\nphan biet hien tuong khuc xa va phan xa anh sang<br>\nv\u1eadt l\u00fd 7 b\u00e0i \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u1ea3n x\u1ea1 v\u00e0 kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u00ed d\u1ee5 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntrong hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng tr\u00ean g\u01b0\u01a1ng ph\u1eb3ng<br>\nn\u00eau hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nkh\u00e1i ni\u1ec7m ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e1t bi\u1ec3u \u0111inh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nn\u1ed9i dung \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 g\u00ec<br>\nph\u00e2n bi\u1ec7t kh\u00fac x\u1ea1 v\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u1eadt l\u00fd 7 b\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nso s\u00e1nh kh\u00fac x\u1ea1 v\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nm\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n<br>\nv\u1eadt l\u00fd 7 n\u00eau \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng v\u1ebd h\u00ecnh<br>\ncung ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ngi\u1ea3i th\u00edch hi\u1ec7n t\u01b0\u1ee3ng nh\u00ecn th\u1ea5y m\u00e0u s\u1eafc c\u1ea7u v\u1ed3ng khi quan s\u00e1t \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 tr\u00ean \u0111\u0129a cd, dvd<br>\nghi nh\u1edb \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nt\u1ea5m ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nso s\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u1ee7a \u0111\u1ed3ng t\u1eed<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng v\u1ebd h\u00ecnh minh ho\u1ea1<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7 l\u00e0 g\u00ec<br>\n\u1ee9ng d\u1ee5ng c\u1ee7a ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nnguy\u00ean l\u00fd ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi ph\u1ea3n x\u1ea1 t\u1eeb thi\u00ean v\u01b0\u01a1ng tinh<br>\nnh\u1eefng v\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nkh\u00e1i ni\u1ec7m hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nl\u00fd thuy\u1ebft b\u00e0i \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ngi\u1ea3i b\u00e0i \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nn\u00eau c\u00e1ch v\u1ebd \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 anh s\u00e1ng<br>\n\u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 l\u00e0 g\u00ec<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 11<br>\nhi\u1ec7n t\u01b0\u01a1ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng<br>\nv\u00ed d\u1ee5 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 tr\u00ean c\u00e1c v\u00f9ng d\u1ea7u m\u1ee1<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh l\u00fd ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e2n bi\u1ec7t hi\u1ec7n t\u01b0\u1ee3ng kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng th\u00ec g\u00f3c t\u1edbi<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng tr\u00ean g\u01b0\u01a1ng c\u1ea7u l\u1ed3i<br>\n\u0111i\u1ec1u ki\u1ec7n ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u00e1nh s\u00e1ng n\u00e0o d\u01b0\u1edbi \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 khi \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c ph\u00e1t ra t\u1eeb<br>\nv\u1ebd h\u00ecnh ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u1ee7a g\u01b0\u01a1ng c\u1ea7u l\u1ed3i<br>\nd\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7<br>\nph\u00e1t bi\u1ec3u n\u1ed9i dung ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 11<br>\nhi\u1ec7n t\u01b0\u1ee3ng n\u00e0o d\u01b0\u1edbi \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng:<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng g\u00f3c ph\u1ea3n x\u1ea1<br>\nn\u1ed9i dung ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp v\u1eadn d\u1ee5ng \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng ph\u00e1t bi\u1ec3u<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c4<br>\na ph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng wiki<br>\nb\u00e0i t\u1eadp th\u00eam \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111i\u1ec1u ki\u1ec7n ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng to\u00e0n ph\u1ea7n<br>\nbai tap khuc xa anh sang va phan xa toan phan<br>\nh\u00e3y n\u00eau n\u1ed9i dung \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u1ee9ng d\u1ee5ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nso\u1ea1n b\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nn\u00eau \u1ee9ng d\u1ee5ng c\u1ee7a \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nch\u1ee7 \u0111\u1ec1 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng th\u00ec&#8230;<br>\nso s\u00e1nh kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadn ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nm\u1eb7t ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u1ee7a g\u01b0\u01a1ng ph\u1eb3ng l\u00e0<br>\ntheo n\u1ed9i dung \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng th\u00ec<br>\nv\u1eadt l\u00fd b\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nc\u00e1ch v\u1ebd h\u00ecnh \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nphat bieu \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng v\u00e0<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng qua g\u01b0\u01a1ng ph\u1eb3ng<br>\nb\u00e0i t\u1eadp v\u1eadt l\u00ed \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nsoan bai dinh luat phan xa anh sang<br>\n\u0111\u00e2u l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u1ee9ng d\u1ee5ng c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 anh s\u00e1ng<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng th\u00ec g\u1ed1c<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh sang<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 j<br>\nhi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng x\u1ea3y ra khi n\u00e0o<br>\ndinh luat phan xa anh sang vat ly 7<br>\n\u0111o v\u1eadn t\u1ed1c \u00e1nh s\u00e1ng b\u1eb1ng xung \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 c\u1ef1c ng\u1eafn<br>\nt\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0<br>\nh\u00ecnh \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ngiai bai tap vat ly 7 bai dinh luat phan xa anh sang<br>\nl\u00fd thuy\u1ebft ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntheo \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng cho bi\u1ebft<br>\nl\u00fd 7 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nc\u00e1ch v\u1ebd ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng d\u01b0\u01a1ng t\u00ednh<br>\nl\u00fd thuy\u1ebft ph\u1ea7n nhi\u1ec5u x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u00ed d\u1ee5 v\u1ec1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt truy\u1ec1n th\u1eb3ng \u00e1nh s\u00e1ng v\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u1eadt l\u00fd 7 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng sbt<br>\ndinh luat phan xa anh sang vat ly lop 7<br>\ns\u01a1 \u0111\u1ed3 t\u01b0 duy \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt v\u1ec1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nbai 4 dinh luat phan xa anh sang<br>\nm\u1ea5t ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u00e1nh s\u00e1ng n\u00e0o kh\u00f4ng ph\u1ea3i l\u00e0 \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1<br>\n\u0111\u1ecbnh l\u1ef1c ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ng\u00f3c ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nvat ly lop 7 dinh luat phan xa anh sang<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 c\u1ee7a \u00e1nh s\u00e1ng tr\u00ean g\u01b0\u01a1ng c\u1ea7u l\u00f5m<br>\nso\u1ea1n \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nso\u1ea1n v\u1eadt l\u00fd 7 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nh\u00e3y ph\u00e1t bi\u1ec3u \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 c\u1ee7a \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh ngh\u0129a hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp v\u1eadt l\u00fd l\u1edbp 7 b\u00e0i 4 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ntheo dinh luat phan xa anh sang<br>\nt\u1ea1i sao g\u01b0\u01a1ng l\u1ea1i ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nv\u1ebd tia ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u1ea3nh s\u00e1ng<br>\nb\u00e0i t\u1eadp \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7 n\u00e2ng cao<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 v\u00e0 kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u1edbp 7 violet<br>\nn\u1ed9i dung thu\u1ed9c \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\u0111\u1ecbnh lu\u1eadt ph\u1ea3n xa \u00e1nh s\u00e1ng<br>\nso s\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng kh\u00fac x\u1ea1 v\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ns\u1ef1 h\u1ea5p th\u1ee5 v\u00e0 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nbi\u1ec3u di\u1ec5n \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nb\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\ns\u1ef1 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng c\u1ee7a g\u01b0\u01a1ng c\u1ea7u l\u00f5m<br>\nph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng to\u00e0n ph\u1ea7n<br>\nkhi x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng g\u00f3c t\u1edbi kh\u00f4ng th\u1ec3 l\u1edbn h\u01a1n<br>\n\u0111\u1ecbnh lu\u1eadt tia ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\nph\u00e2n bi\u1ec7t hi\u1ec7n t\u01b0\u1ee3ng kh\u00fac x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<br>\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Ki\u1ebfn th\u1ee9c v\u1eadt l\u00fd 7 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 n\u1eb7ng v\u00e0 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ecdc sinh. \u0110\u00e2y l\u00e0 nh\u1eefng chia s\u1ebb n\u1ec1n t\u1ea3ng, gi\u00fap cho c\u00e1c em c\u00f3 th\u1ec3 n\u1eafm \u0111\u01b0\u1ee3c nhi\u1ec1u ki\u1ebfn th\u1ee9c kh\u00f3 sau n\u00e0y. M\u1ed9t trong s\u1ed1 \u0111\u00f3 l\u00e0 \u0111\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2338,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[4,7],"tags":[],"class_list":["post-1017","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trung-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1017","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=1017"}],"version-history":[{"count":2,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1017\/revisions"}],"predecessor-version":[{"id":25684,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1017\/revisions\/25684"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media\/2338"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1017"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1017"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1017"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}