{"id":18858,"date":"2025-07-08T03:23:28","date_gmt":"2025-07-07T20:23:28","guid":{"rendered":"https:\/\/trungvu.net\/?p=18858"},"modified":"2025-07-08T03:34:15","modified_gmt":"2025-07-07T20:34:15","slug":"khong-gian-la-gi-ban-chat-thuc-su-cua-khong-gian-trong-vat-ly-hien-dai","status":"publish","type":"post","link":"https:\/\/trungvu.net\/wordpress\/khong-gian-la-gi-ban-chat-thuc-su-cua-khong-gian-trong-vat-ly-hien-dai\/","title":{"rendered":"Kh\u00f4ng gian l\u00e0 g\u00ec? B\u1ea3n ch\u1ea5t th\u1ef1c s\u1ef1 c\u1ee7a kh\u00f4ng gian trong v\u1eadt l\u00fd hi\u1ec7n \u0111\u1ea1i"},"content":{"rendered":"\n<p>Kh\u00f4ng gian \u2013 m\u1ed9t kh\u00e1i ni\u1ec7m t\u01b0\u1edfng ch\u1eebng quen thu\u1ed9c, nh\u01b0ng l\u1ea1i ch\u1ee9a \u0111\u1ef1ng nh\u1eefng b\u00ed \u1ea9n s\u00e2u th\u1eb3m c\u1ee7a v\u0169 tr\u1ee5. B\u1ea1n c\u00f3 bao gi\u1edd t\u1ef1 h\u1ecfi: Kh\u00f4ng gian l\u00e0 g\u00ec? T\u1ea1i sao v\u1eadt ch\u1ea5t l\u1ea1i b\u1ebb cong kh\u00f4ng-th\u1eddi gian? V\u00e0 b\u1ea3n ch\u1ea5t th\u1eadt s\u1ef1 c\u1ee7a kh\u00f4ng gian l\u00e0 g\u00ec? Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd c\u00f9ng kh\u00e1m ph\u00e1 c\u00e1ch m\u00e0 khoa h\u1ecdc hi\u1ec7n \u0111\u1ea1i, \u0111\u1eb7c bi\u1ec7t l\u00e0 thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a Einstein, \u0111\u00e3 l\u00e0m thay \u0111\u1ed5i ho\u00e0n to\u00e0n c\u00e1i nh\u00ecn c\u1ee7a con ng\u01b0\u1eddi v\u1ec1 kh\u00f4ng gian.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/trungvu.net\/wp-content\/uploads\/2025\/07\/521917E6-FA40-4724-AFD3-7EC2E8C5E371.png\" alt=\"Kh\u00f4ng gian l\u00e0 g\u00ec? B\u1ea3n ch\u1ea5t th\u1ef1c s\u1ef1 c\u1ee7a kh\u00f4ng gian trong v\u1eadt l\u00fd hi\u1ec7n \u0111\u1ea1i\" class=\"wp-image-18860\" srcset=\"https:\/\/trungvu.net\/wordpress\/wp-content\/uploads\/2025\/07\/521917E6-FA40-4724-AFD3-7EC2E8C5E371.png 1024w, https:\/\/trungvu.net\/wordpress\/wp-content\/uploads\/2025\/07\/521917E6-FA40-4724-AFD3-7EC2E8C5E371-300x300.png 300w, https:\/\/trungvu.net\/wordpress\/wp-content\/uploads\/2025\/07\/521917E6-FA40-4724-AFD3-7EC2E8C5E371-105x105.png 105w, https:\/\/trungvu.net\/wordpress\/wp-content\/uploads\/2025\/07\/521917E6-FA40-4724-AFD3-7EC2E8C5E371-768x768.png 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Kh\u00f4ng gian l\u00e0 g\u00ec? B\u1ea3n ch\u1ea5t th\u1ef1c s\u1ef1 c\u1ee7a kh\u00f4ng gian trong v\u1eadt l\u00fd hi\u1ec7n \u0111\u1ea1i<\/em><\/figcaption><\/figure>\n\n\n\n<p><strong>\u2705 Kh\u00f4ng gian l\u00e0 g\u00ec?<\/strong><\/p>\n\n\n\n<p>Trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y, ch\u00fang ta th\u01b0\u1eddng ngh\u0129 kh\u00f4ng gian ch\u1ec9 l\u00e0 kho\u1ea3ng tr\u1ed1ng gi\u1eefa c\u00e1c v\u1eadt th\u1ec3 \u2013 n\u01a1i m\u00e0 m\u1ecdi v\u1eadt t\u1ed3n t\u1ea1i v\u00e0 di chuy\u1ec3n. Tuy nhi\u00ean, khi b\u01b0\u1edbc v\u00e0o th\u1ebf gi\u1edbi v\u1eadt l\u00fd hi\u1ec7n \u0111\u1ea1i, kh\u00f4ng gian kh\u00f4ng \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t \u201cs\u00e2n kh\u1ea5u tr\u1ed1ng r\u1ed7ng\u201d, m\u00e0 l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n n\u0103ng \u0111\u1ed9ng, c\u00f3 th\u1ec3 b\u1ecb t\u00e1c \u0111\u1ed9ng, b\u1ecb u\u1ed1n cong, v\u00e0 th\u1eadm ch\u00ed b\u1ecb thay \u0111\u1ed5i b\u1edfi ch\u00ednh v\u1eadt ch\u1ea5t v\u00e0 n\u0103ng l\u01b0\u1ee3ng.<\/p>\n\n\n\n<p><strong>\u2705 Kh\u00f4ng-th\u1eddi gian: B\u01b0\u1edbc ngo\u1eb7t t\u1eeb thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i<\/strong><\/p>\n\n\n\n<p>Albert Einstein l\u00e0 ng\u01b0\u1eddi \u0111\u1ea7u ti\u00ean \u0111\u00e3 \u0111\u01b0a ra kh\u00e1i ni\u1ec7m kh\u00f4ng-th\u1eddi gian (spacetime) \u2013 m\u1ed9t tr\u01b0\u1eddng th\u1ed1ng nh\u1ea5t g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>3 chi\u1ec1u kh\u00f4ng gian (chi\u1ec1u d\u00e0i, chi\u1ec1u r\u1ed9ng, chi\u1ec1u cao)<\/li>\n\n\n\n<li>1 chi\u1ec1u th\u1eddi gian<\/li>\n<\/ul>\n\n\n\n<p>Trong m\u00f4 h\u00ecnh n\u00e0y, kh\u00f4ng gian kh\u00f4ng th\u1ec3 t\u00e1ch r\u1eddi kh\u1ecfi th\u1eddi gian. Khi c\u00f3 v\u1eadt ch\u1ea5t (nh\u01b0 h\u00e0nh tinh, ng\u00f4i sao), n\u00f3 s\u1ebd l\u00e0m cong kh\u00f4ng-th\u1eddi gian xung quanh n\u00f3. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y l\u00e0 c\u00e1ch m\u00e0 tr\u1ecdng l\u1ef1c \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh theo thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i r\u1ed9ng.<\/p>\n\n\n\n<p>\ud83d\udc49 V\u00ed d\u1ee5: Tr\u00e1i \u0110\u1ea5t kh\u00f4ng \u201ck\u00e9o\u201d M\u1eb7t Tr\u0103ng b\u1eb1ng l\u1ef1c h\u00fat \u0111\u01a1n thu\u1ea7n, m\u00e0 ch\u00ednh s\u1ef1 cong c\u1ee7a kh\u00f4ng-th\u1eddi gian quanh Tr\u00e1i \u0110\u1ea5t \u0111\u00e3 l\u00e0m M\u1eb7t Tr\u0103ng di chuy\u1ec3n theo m\u1ed9t qu\u1ef9 \u0111\u1ea1o c\u1ed1 \u0111\u1ecbnh \u2013 gi\u1ed1ng nh\u01b0 m\u1ed9t vi\u00ean bi quay quanh m\u1ed9t t\u1ea5m v\u1ea3i cao su b\u1ecb l\u00f5m.<\/p>\n\n\n\n<p><strong>\u2705 Kh\u00f4ng gian kh\u00f4ng t\u0129nh \u2013 m\u00e0 n\u0103ng \u0111\u1ed9ng<\/strong><\/p>\n\n\n\n<p><strong>1.&nbsp;<\/strong><\/p>\n\n\n\n<p><strong>Kh\u00f4ng gian c\u00f3 th\u1ec3 cong<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Khi c\u00f3 v\u1eadt th\u1ec3 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn, kh\u00f4ng gian b\u1ecb cong l\u1ea1i.<\/li>\n\n\n\n<li>\u00c1nh s\u00e1ng c\u0169ng b\u1ecb b\u1ebb cong theo kh\u00f4ng-th\u1eddi gian (\u0111\u01b0\u1ee3c quan s\u00e1t r\u00f5 r\u00e0ng qua hi\u1ec7n t\u01b0\u1ee3ng th\u1ea5u k\u00ednh h\u1ea5p d\u1eabn \u2013 gravitational lensing).<\/li>\n<\/ul>\n\n\n\n<p><strong>2.&nbsp;<\/strong><\/p>\n\n\n\n<p><strong>Kh\u00f4ng gian c\u00f3 th\u1ec3 gi\u00e3n n\u1edf<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc \u0111\u00e3 ph\u00e1t hi\u1ec7n r\u1eb1ng: V\u0169 tr\u1ee5 \u0111ang gi\u00e3n n\u1edf, v\u00e0 kh\u00f4ng ph\u1ea3i v\u00ec c\u00e1c thi\u00ean h\u00e0 bay ra xa, m\u00e0 v\u00ec ch\u00ednh kh\u00f4ng gian gi\u1eefa ch\u00fang \u0111ang l\u1edbn d\u1ea7n l\u00ean theo th\u1eddi gian.<\/li>\n<\/ul>\n\n\n\n<p><strong>3.&nbsp;<\/strong><\/p>\n\n\n\n<p><strong>Kh\u00f4ng gian c\u00f3 th\u1ec3 co l\u1ea1i v\u00e0 bi\u1ebfn m\u1ea5t<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Trong nh\u1eefng n\u01a1i c\u00f3 m\u1eadt \u0111\u1ed9 v\u1eadt ch\u1ea5t c\u1ef1c l\u1edbn, nh\u01b0 l\u1ed7 \u0111en, kh\u00f4ng gian b\u1ecb b\u1ebb cong \u0111\u1ebfn m\u1ee9c kh\u00f4ng c\u00f2n l\u1ed1i tho\u00e1t \u2013 n\u01a1i \u0111\u00f3 g\u1ecdi l\u00e0 ch\u00e2n tr\u1eddi s\u1ef1 ki\u1ec7n (event horizon).<\/li>\n<\/ul>\n\n\n\n<p><strong>\u2705 V\u1eady b\u1ea3n ch\u1ea5t th\u1ef1c s\u1ef1 c\u1ee7a kh\u00f4ng gian l\u00e0 g\u00ec?<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>\u0110\u1eb7c \u0111i\u1ec3m<\/strong><\/td><td><strong>Mi\u00eau t\u1ea3<\/strong><\/td><\/tr><tr><td>\ud83d\udd39 Kh\u00f4ng gian l\u00e0 g\u00ec?<\/td><td>L\u00e0 ph\u1ea7n c\u1ea5u tr\u00fac c\u1ee7a kh\u00f4ng-th\u1eddi gian \u2013 m\u1ed9t th\u1ef1c th\u1ec3 \u0111\u1ed9ng, kh\u00f4ng c\u1ed1 \u0111\u1ecbnh<\/td><\/tr><tr><td>\ud83d\udd39 C\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng?<\/td><td>C\u00f3, b\u1edfi kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 n\u0103ng l\u01b0\u1ee3ng (theo thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i r\u1ed9ng)<\/td><\/tr><tr><td>\ud83d\udd39 Kh\u00f4ng gian l\u00e0 t\u0129nh hay \u0111\u1ed9ng?<\/td><td>Lu\u00f4n thay \u0111\u1ed5i: cong, gi\u00e3n, co\u2026 theo s\u1ef1 ph\u00e2n b\u1ed1 v\u1eadt ch\u1ea5t<\/td><\/tr><tr><td>\ud83d\udd39 Kh\u00f4ng gian c\u00f3 t\u1ed3n t\u1ea1i \u0111\u1ed9c l\u1eadp?<\/td><td>Kh\u00f4ng \u2013 n\u00f3 g\u1eafn ch\u1eb7t v\u1edbi th\u1eddi gian t\u1ea1o n\u00ean kh\u00f4ng-th\u1eddi gian<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u2705 K\u1ebft lu\u1eadn<\/strong><\/p>\n\n\n\n<p>Kh\u00f4ng gian kh\u00f4ng c\u00f2n l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m tr\u1ed1ng r\u1ed7ng, t\u0129nh l\u1eb7ng nh\u01b0 ta t\u1eebng ngh\u0129. Nh\u1edd thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a Einstein, ch\u00fang ta bi\u1ebft r\u1eb1ng kh\u00f4ng gian l\u00e0 m\u1ed9t ph\u1ea7n s\u1ed1ng \u0111\u1ed9ng c\u1ee7a v\u0169 tr\u1ee5, c\u00f3 th\u1ec3 b\u1ecb bi\u1ebfn d\u1ea1ng b\u1edfi ch\u00ednh v\u1eadt ch\u1ea5t t\u1ed3n t\u1ea1i trong n\u00f3. Vi\u1ec7c hi\u1ec3u \u0111\u00fang v\u1ec1 b\u1ea3n ch\u1ea5t c\u1ee7a kh\u00f4ng gian kh\u00f4ng ch\u1ec9 gi\u00fap ta n\u1eafm b\u1eaft c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng nh\u01b0 tr\u1ecdng l\u1ef1c, l\u1ed7 \u0111en hay s\u1ef1 gi\u00e3n n\u1edf c\u1ee7a v\u0169 tr\u1ee5, m\u00e0 c\u00f2n m\u1edf ra nh\u1eefng h\u01b0\u1edbng nghi\u00ean c\u1ee9u m\u1edbi trong v\u1eadt l\u00fd l\u01b0\u1ee3ng t\u1eed v\u00e0 v\u0169 tr\u1ee5 h\u1ecdc.<\/p>\n\n\n\n<p><strong>\ud83d\udccc T\u1eeb kh\u00f3a SEO g\u1ee3i \u00fd:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kh\u00f4ng gian l\u00e0 g\u00ec<\/li>\n\n\n\n<li>Kh\u00f4ng gian v\u1eadt l\u00fd<\/li>\n\n\n\n<li>Kh\u00f4ng-th\u1eddi gian Einstein<\/li>\n\n\n\n<li>Tr\u1ecdng l\u1ef1c v\u00e0 kh\u00f4ng gian<\/li>\n\n\n\n<li>V\u1eadt ch\u1ea5t b\u1ebb cong kh\u00f4ng gian<\/li>\n\n\n\n<li>Gi\u00e3n n\u1edf v\u0169 tr\u1ee5<\/li>\n\n\n\n<li>Kh\u00f4ng gian trong thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kh\u00f4ng gian \u2013 m\u1ed9t kh\u00e1i ni\u1ec7m t\u01b0\u1edfng ch\u1eebng quen thu\u1ed9c, nh\u01b0ng l\u1ea1i ch\u1ee9a \u0111\u1ef1ng nh\u1eefng b\u00ed \u1ea9n s\u00e2u th\u1eb3m c\u1ee7a v\u0169 tr\u1ee5. B\u1ea1n c\u00f3 bao gi\u1edd t\u1ef1 h\u1ecfi: Kh\u00f4ng gian l\u00e0 g\u00ec? T\u1ea1i sao v\u1eadt ch\u1ea5t l\u1ea1i b\u1ebb cong kh\u00f4ng-th\u1eddi gian<\/p>\n","protected":false},"author":1,"featured_media":18860,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1093],"tags":[2076,2079,2074,2077,2075,2078,2080],"class_list":["post-18858","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goc-nhin","tag-albert-einstein","tag-be-cong","tag-khong-gian","tag-khong-thoi-gian","tag-thoi-gian","tag-thuyet-tuong-doi","tag-vat-ly-ly-thuyet"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Kh\u00f4ng gian l\u00e0 g\u00ec? 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