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B\u1edfi\t v\u00ec\t ch\u00fang\t ta\t c\u00f3\t m\u1ed9t\t s\u1ed1\t l\u00fd\t l\u1ebd\t \u0111\u1ec3\t d\u1eabn\t d\u1eaft,\t m\u1ed9t\t ph\u1ea7n\t t\u1eeb\t c\u00e1c chuy\u1ec3n\t \u0111\u1ed9ng\t bi\u1ec3u\t ki\u1ebfn\t l\u00e0m\t th\u00e0nh\t nh\u1eefng\t s\u1ef1\t kh\u00e1c\t bi\u1ec7t\t v\u1edbi\t c\u00e1c chuy\u1ec3n\t\u0111\u1ed9ng\tth\u1ef1c;\tm\u1ed9t\tph\u1ea7n\tt\u1eeb\tc\u00e1c\tl\u1ef1c,\tnguy\u00ean\tnh\u00e2n\tv\u00e0\th\u1ec7\tqu\u1ea3 c\u1ee7a\tc\u00e1c\tchuy\u1ec3n\t\u0111\u1ed9ng\tth\u1ef1c.\tCh\u1eb3ng\th\u1ea1n\tn\u1ebfu\thai\tqu\u1ea3\tc\u1ea7u,\t\u0111\u01b0\u1ee3c\tgi\u1eef \u1edf\t m\u1ed9t\t kho\u1ea3ng\t c\u00e1ch\t cho\t tr\u01b0\u1edbc\t b\u1eb1ng\t m\u1ed9t\t s\u1ee3i\t d\u00e2y\t n\u1ed1i\t li\u1ec1n\t ch\u00fang, \u0111\u01b0\u1ee3c\t chuy\u1ec3n\t \u0111\u1ed9ng\t quay\t xung\t quanh\t tr\u1ecdng\t t\u00e2m\t c\u1ee7a\t ch\u00fang, ch\u00fang\tta\tc\u00f3\tth\u1ec3\tt\u1eeb\ts\u1ee9c\tc\u0103ng\tc\u1ee7a\td\u00e2y\tnh\u1eadn\tra\tkhuynh\th\u01b0\u1edbng\tc\u1ee7a hai\t qu\u1ea3\t c\u1ea7u\t r\u1eddi\t b\u1ecf\t tr\u1ee5c\t chuy\u1ec3n\t \u0111\u1ed9ng\t c\u1ee7a\t ch\u00fang,\t v\u00e0\t t\u1eeb\t \u0111\u00f3\t c\u00f3\t th\u1ec3 t\u00ednh\t to\u00e1n\t c\u01b0\u1eddng\t \u0111\u1ed9\t c\u1ee7a\t chuy\u1ec3n\t \u0111\u1ed9ng\t v\u00f2ng\t tr\u00f2n\t c\u1ee7a\t ch\u00fang.\t N\u1ebfu gi\u1edd\t ng\u01b0\u1eddi\t ta\t \u0111em\t c\u00e1c\t l\u1ef1c\t b\u1eb1ng\t nhau\t b\u1ea5t\t k\u1ef3\t c\u00f9ng\t m\u1ed9t\t l\u00fac\t \u00e1p\t l\u00ean hai\t m\u1eb7t\t c\u1ee7a\t c\u00e1c\t qu\u1ea3\t c\u1ea7u\t \u0111\u1ec3\t l\u00e0m\t t\u0103ng\t hay\t ch\u1eadm\t l\u1ea1i\t chuy\u1ec3n\t \u0111\u1ed9ng v\u00f2ng\ttr\u00f2n\tc\u1ee7a\tch\u00fang,\tth\u00ec\tc\u0103n\tc\u1ee9\tv\u00e0o\ts\u1ef1\tt\u0103ng\tl\u00ean\thay\tgi\u1ea3m\txu\u1ed1ng c\u1ee7a\t \u0111\u1ed9\t c\u0103ng\t c\u1ee7a\t s\u1ee3i\t d\u00e2y\t ng\u01b0\u1eddi\t ta\t c\u00f3\t th\u1ec3\t suy\t ra\t s\u1ef1\t t\u0103ng\t l\u00ean\t hay gi\u1ea3m\txu\u1ed1ng\tc\u1ee7a\tchuy\u1ec3n\t\u0111\u1ed9ng\tch\u00fang;\tv\u00e0\tt\u1eeb\t\u0111\u1ea5y\tc\u00f3\tth\u1ec3\tnh\u1eadn\tdi\u1ec7n ra\tc\u00e1c\tm\u1eb7t\tn\u00e0o\tc\u1ee7a\tc\u00e1c\tqu\u1ea3\tc\u1ea7u\tm\u00e0\tc\u00e1c\tl\u1ef1c\tph\u1ea3i\tt\u00e1c\td\u1ee5ng\tl\u00ean\t\u0111\u1ec3\tc\u00f3 chuy\u1ec3n\t\u0111\u1ed9ng\tm\u1ea1nh\tnh\u1ea5t;\tngh\u0129a\tl\u00e0,\tt\u00ecm\tra\t\u0111\u01b0\u1ee3c\tc\u00e1c\tm\u1eb7t\tsau,\thay c\u00e1c\tm\u1eb7t\ts\u1ebd\tti\u1ebfp\ttheo\tsau\tch\u00fang\ttrong\tchuy\u1ec3n\t\u0111\u1ed9ng\tv\u00f2ng\ttr\u00f2n.\tKhi \u0111\u00e3\t nh\u1eadn\t ra\t \u0111\u01b0\u1ee3c\t c\u00e1c\t m\u1eb7t\t ti\u1ebfp\t theo,\t v\u00e0\t do\t v\u1eady\t c\u00e1c\t m\u1eb7t\t tr\u01b0\u1edbc\t \u0111\u00f3, th\u00ec\t ch\u00fang\t ta\t s\u1ebd\t c\u00f3\t th\u1ec3\t nh\u1eadn\t ra\t chi\u1ec1u\t chuy\u1ec3n\t \u0111\u1ed9ng.\t B\u1eb1ng\t c\u00e1ch n\u00e0y,\t ch\u00fang\t ta\t c\u00f3\t th\u1ec3\t t\u00ecm\t th\u1ea5y\t kh\u00f4ng\t nh\u1eefng\t \u0111\u1ea1i\t l\u01b0\u1ee3ng\t m\u00e0\t c\u1ea3 chi\u1ec1u\tc\u1ee7a\tchuy\u1ec3n\t\u0111\u1ed9ng\tv\u00f2ng\ttr\u00f2n,\tm\u1eb7c\td\u00f9\ttrong\tm\u1ed9t\tkh\u00f4ng\tgian r\u1ed7ng\tv\u00f4\tc\u00f9ng\tl\u1edbn,\tngay\tkhi\tkh\u00f4ng\tc\u00f3\tc\u00e1i\tg\u00ec\t\u1edf\tb\u00ean\tngo\u00e0i\thay\tkh\u1ea3\td\u0129 tri\tgi\u00e1c\t\u0111\u01b0\u1ee3c\t\u0111\u1ec3\tc\u00f3\tth\u1ec3\tso\ts\u00e1nh\tch\u00fang\tv\u1edbi\tc\u00e1c\tqu\u1ea3\tc\u1ea7u.\tNh\u01b0ng\tb\u00e2y gi\u1edd,\t n\u1ebfu\t ng\u01b0\u1eddi\t ta\t \u0111\u1eb7t\t v\u00e0o\t m\u1ed9t\t kh\u00f4ng\t gian\t v\u00e0i\t v\u1eadt\t th\u1ec3\t \u1edf\t xa,\t v\u00e0\t \u0111\u1ec3 cho\t ch\u00fang\t lu\u00f4n\t lu\u00f4n\t gi\u1eef\t nguy\u00ean\t v\u1ecb\t tr\u00ed\t cho\t tr\u01b0\u1edbc\t v\u1edbi\t nhau,\t nh\u01b0 c\u00e1c\t ng\u00f4i\t sao\t c\u1ed1\t \u0111\u1ecbnh\t trong\t v\u00f9ng\t tr\u1eddi\t ch\u00fang\t ta\t ch\u1eb3ng\t h\u1ea1n,\t th\u00ec\t t\u1eeb","s\u1ef1\t di\t chuy\u1ec3n\t t\u01b0\u01a1ng\t \u0111\u1ed1i\t c\u1ee7a\t c\u00e1c\t qu\u1ea3\t c\u1ea7u\t gi\u1eefa\t c\u00e1c\t v\u1eadt\t th\u1ec3\t kia, ch\u00fang\tta\ts\u1ebd\tkh\u00f4ng\tx\u00e1c\t\u0111\u1ecbnh\t\u0111\u01b0\u1ee3c\tchuy\u1ec3n\t\u0111\u1ed9ng\tthu\u1ed9c\tv\u1ec1\tc\u00e1c\tqu\u1ea3 c\u1ea7u\t hay\t c\u00e1c\t v\u1eadt\t th\u1ec3.\t Nh\u01b0ng\t n\u1ebfu\t ch\u00fang\t ta\t quan\t s\u00e1t\t s\u1ee3i\t d\u00e2y,\t v\u00e0 th\u1ea5y\t\u0111\u1ed9\tc\u0103ng\tc\u1ee7a\tn\u00f3\t\u0111\u00fang\tnh\u01b0\tchuy\u1ec3n\t\u0111\u1ed9ng\tc\u1ee7a\tc\u00e1c\tqu\u1ea3\tc\u1ea7u\t\u0111\u00f2i h\u1ecfi,\t th\u00ec\t t\u1eeb\t \u0111\u00f3\t ch\u00fang\t ta\t c\u00f3\t th\u1ec3\t k\u1ebft\t lu\u1eadn\t r\u1eb1ng\t c\u00e1c\t qu\u1ea3\t c\u1ea7u\t chuy\u1ec3n \u0111\u1ed9ng\t v\u00e0\t c\u00e1c\t v\u1eadt\t th\u1ec3\t \u0111\u1ee9ng\t y\u00ean;\t v\u00e0\t sau\t c\u00f9ng,\t t\u1eeb\t s\u1ef1\t di\t chuy\u1ec3n\t c\u1ee7a c\u00e1c\t qu\u1ea3\t c\u1ea7u\t gi\u1eefa\t c\u00e1c\t v\u1eadt\t th\u1ec3\t ch\u00fang\t ta\t suy\t ra\t \u0111\u01b0\u1ee3c\t chi\u1ec1u\t h\u01b0\u1edbng c\u1ee7a\t chuy\u1ec3n\t \u0111\u1ed9ng.\t Nh\u01b0ng\t l\u00e0m\t sao\t t\u00ecm\t ra\t \u0111\u01b0\u1ee3c\t c\u00e1c\t chuy\u1ec3n\t \u0111\u1ed9ng \u0111\u00fang\t th\u1eadt\t t\u1eeb\t c\u00e1c\t nguy\u00ean\t nh\u00e2n\t v\u00e0\t h\u1ec7\t qu\u1ea3,\t c\u0169ng\t nh\u01b0\t t\u1eeb\t c\u00e1c\t s\u1ef1 kh\u00e1c\tbi\u1ec7t\tc\u00f3\tt\u00ednh\tc\u00e1ch\tbi\u1ec3u\tki\u1ebfn\tc\u1ee7a\tch\u00fang\tv\u00e0\tng\u01b0\u1ee3c\tl\u1ea1i,\tl\u00e0m\tsao t\u00ecm\t ra\t \u0111\u01b0\u1ee3c\t c\u00e1c\t nguy\u00ean\t nh\u00e2n\t v\u00e0\t h\u1ec7\t qu\u1ea3\t t\u1eeb\t nh\u1eefng\t chuy\u1ec3n\t \u0111\u1ed9ng \u0111\u00fang\tth\u1eadt\thay\tbi\u1ec3u\tki\u1ebfn,\tnh\u1eefng\t\u0111i\u1ec1u\t\u0111\u00f3\ts\u1ebd\t\u0111\u01b0\u1ee3c\tc\u1eaft\tngh\u0129a\tchi\tti\u1ebft h\u01a1n\t trong\t kh\u00e1o\t lu\u1eadn\t n\u00e0y.\t Ch\u00ednh\t v\u00ec\t m\u1ee5c\t \u0111\u00edch\t n\u00e0y\t m\u00e0\t t\u00f4i\t \u0111\u00e3\t vi\u1ebft ra\tn\u00f3. 6.\tErnst\tMach (1838\t-\t1916) L\u1ecbch\tS\u1eed\tC\u01a1\tH\u1ecdc\t-\t\u0110\u01b0\u1ee3c\tTr\u00ecnh\tB\u00e0y\tD\u01b0\u1edbi\tD\u1ea1ng\tPh\u00ea\tPh\u00e1n (1883) Cu\u1ed1i\tth\u1ebf\tk\u1ef7\tXIX\tgi\u1edbi\tkhoa\th\u1ecdc\t\u0111\u00e3\ttin\tt\u01b0\u1edfng\tm\u00e3nh\tli\u1ec7t\tr\u1eb1ng\tkhoa h\u1ecdc\t\u0111\u00e3\t\u0111\u1ea1t\t\u0111\u1ebfn\ts\u1ef1\thi\u1ec3u\tbi\u1ebft\tcu\u1ed1i\tc\u00f9ng\tc\u1ee7a\ts\u1ef1\tv\u1eadt,\tt\u00f2a\tnh\u00e0\tv\u1eadt\tl\u00fd \u0111\u00e3\t ho\u00e0n\t thi\u1ec7n\t v\u1edbi\t thuy\u1ebft\t c\u01a1\t h\u1ecdc\t c\u1ee7a\t Newton\t v\u00e0\t thuy\u1ebft\t \u0111i\u1ec7n\t t\u1eeb c\u1ee7a\t Maxwell,\t kh\u00f4ng\t c\u00f2n\t v\u1ea5n\t \u0111\u1ec1\t g\u00ec\t l\u1edbn\t \u0111\u1ec3\t nghi\u00ean\t c\u1ee9u\t n\u1eefa,\t ai c\u0169ng\t ngh\u0129\t r\u1eb1ng\t khoa\t h\u1ecdc\t \u0111\u00e3\t \u0111i\t \u0111\u00fang\t \u0111\u01b0\u1eddng\t c\u1ee7a\t n\u00f3,\t Ch\u1ec9\t c\u00f3\t m\u1ed9t s\u1ed1\t \u00edt\t ng\u01b0\u1eddi\t m\u1edbi\t c\u1ea3m\t th\u1ea5y\t n\u1ec1n\t t\u1ea3ng\t c\u1ee7a\t v\u1eadt\t l\u00fd\t l\u00e0\t kh\u00f4ng\t \u1ed5n,\t v\u00e0 c\u1ea7n\tph\u1ea3i\tc\u00f3\tm\u1ed9t\ts\u1ef1\tthay\t\u0111\u1ed5i\tc\u01a1\tb\u1ea3n\tnhanh\tch\u00f3ng. M\u1ed9t\t trong\t nh\u1eefng\t ng\u01b0\u1eddi\t \u0111\u00f3\t l\u00e0\t nh\u00e0\t v\u1eadt\t l\u00fd\t ki\u00eam\t tri\u1ebft\t h\u1ecdc\t Ernst Mach\tc\u1ee7a\t\u00c1o.\tTrong\tquy\u1ec3n\ts\u00e1ch\tn\u1ed5i\tti\u1ebfng\tc\u1ee7a\t\u00f4ng\tmang\tt\u00ean\t\\\"L\u1ecbch\ts\u1eed C\u01a1\t h\u1ecdc\t \u2013\t \u0110\u01b0\u1ee3c\t tr\u00ecnh\t b\u00e0y\t d\u01b0\u1edbi\t d\u1ea1ng\t ph\u00ea\t ph\u00e1n\\\"\t (Die\t Mechanik\t in ihrer\t Entwickelung:\t Historisch-kritisch\t dargestellt)\t \u0111\u01b0\u1ee3c\t xu\u1ea5t b\u1ea3n\t n\u0103m\t 1883,\t Mach\t \u0111\u00e3\t \\\"th\u00e1ch\t th\u1ee9c\\\"\t quan\t \u0111i\u1ec3m\t c\u1ee7a\t Newton\t v\u1ec1 nh\u1eefng\t kh\u00e1i\t ni\u1ec7m\t nh\u01b0\t th\u1eddi\t gian\t v\u00e0\t kh\u00f4ng\t gian\t tuy\u1ec7t\t \u0111\u1ed1i,\t v\u00e0\t kh\u1eb3ng \u0111\u1ecbnh\t t\u00ednh\t ch\u1ea5t\t t\u01b0\u01a1ng\t \u0111\u1ed1i\t c\u1ee7a\t ch\u00fang.\t \u1ea2nh\t h\u01b0\u1edfng\t c\u1ee7a\t Mach\t l\u00ean Einstein\t trong\t thuy\u1ebft\t t\u01b0\u01a1ng\t \u0111\u1ed1i\t c\u1ee7a\t \u00f4ng\t \u0111\u01b0\u1ee3c\t \u00f4ng\t x\u00e1c\t nh\u1eadn\t nhi\u1ec1u l\u1ea7n.\t \\\"Cu\u1ed1n\t s\u00e1ch\t n\u00e0y\\\",\t Einstein\t vi\u1ebft\t trong\t m\u1ed9t\t b\u00e0i\t t\u1ef1\t thu\u1eadt\t n\u0103m","1946,\t \\\"\u0111\u00e3\t c\u00f3\t m\u1ed9t\t \u1ea3nh\t h\u01b0\u1edfng\t s\u00e2u\t \u0111\u1eadm\t l\u00ean\t t\u00f4i\\\".\t D\u01b0\u1edbi\t \u0111\u00e2y\t l\u00e0\t m\u1ed9t\t s\u1ed1 \u0111o\u1ea1n\ttr\u00edch\tt\u1eeb\tquy\u1ec3n\ts\u00e1ch. 1.\t Trong\t ph\u1ea7n\t b\u00ecnh\t lu\u1eadn\t v\u00e0\t minh\t h\u1ecda\t (scholium\t c\u1ee7a\t Newton n\u00f3i\t tr\u00ean)\t m\u00e0\t \u00f4ng\t \u0111\u00e3\t \u0111\u1eb7t\t li\u1ec1n\t v\u00e0o\t sau\t c\u00e1c\t \u0111\u1ecbnh\t ngh\u0129a,\t Newton\t \u0111\u00e3 ph\u00e1t\t bi\u1ec3u\t nh\u1eefng\t quan\t \u0111i\u1ec3m\t c\u1ee7a\t \u00f4ng\t v\u1ec1\t th\u1eddi\t gian\t v\u00e0\t kh\u00f4ng\t gian m\u00e0\t ch\u00fang\t ta\t c\u1ea7n\t ph\u1ea3i\t xem\t x\u00e9t\t chi\t ti\u1ebft\t h\u01a1n.\t \u0110\u1ec3\t l\u00e0m\t vi\u1ec7c\t n\u00e0y, ch\u00fang\tta\ts\u1ebd\ttr\u00edch\td\u1eabn\tnguy\u00ean\tv\u0103n,\tch\u1ec9\tnh\u1eefng\t\u0111o\u1ea1n\ttuy\u1ec7t\t\u0111\u1ed1i\tc\u1ea7n thi\u1ebft\t \u0111\u00e3\t \u0111\u1eb7c\t tr\u01b0ng\t c\u00e1c\t quan\t \u0111i\u1ec3m\t c\u1ee7a\t Newton...\t [xem\t nh\u1eefng \u0111o\u1ea1n\ttr\u00ean\tc\u1ee7a\tNewton] 2.\t Ng\u01b0\u1eddi\t ta\t c\u00f3\t c\u1ea3m\t t\u01b0\u1edfng\t r\u1eb1ng\t Newton\t trong\t nh\u1eefng\t \u0111o\u1ea1n b\u00ecnh\t lu\u1eadn\t \u0111\u01b0\u1ee3c\t tr\u00edch\t tr\u00ean,\t d\u01b0\u1eddng\t nh\u01b0\t v\u1eabn\t c\u00f2n\t ch\u1ecbu\t \u1ea3nh\t h\u01b0\u1edfng c\u1ee7a\t tri\u1ebft\t h\u1ecdc\t trung\t c\u1ed5,\t nh\u01b0\t th\u1ec3\t \u00f4ng\t kh\u00f4ng\t trung\t th\u00e0nh\t v\u1edbi\t ch\u1ee7 \u0111\u00edch\tc\u1ee7a\t\u00f4ng,\tl\u00e0\tch\u1ec9\txem\tx\u00e9t\tnh\u1eefng\tc\u00e1i\tth\u1ef1c\tt\u1ed3n\t[125]\t.\tN\u1ebfu\tch\u00fang ta\tn\u00f3i\tm\u1ed9t\tv\u1eadt\tA\tthay\t\u0111\u1ed5i\ttheo\tth\u1eddi\tgian,\tch\u00fang\tta\t\u0111\u01a1n\tgi\u1ea3n\tngh\u0129 r\u1eb1ng\t c\u00e1c\t \u0111i\u1ec1u\t ki\u1ec7n\t x\u00e1c\t \u0111\u1ecbnh\t m\u1ed9t\t v\u1eadt\t A\t t\u00f9y\t thu\u1ed9c\t v\u00e0o\t c\u00e1c\t \u0111i\u1ec1u ki\u1ec7n\tx\u00e1c\t\u0111\u1ecbnh\t m\u1ed9t\tv\u1eadt\t B\t kh\u00e1c.\t C\u00e1c\t dao\t \u0111\u1ed9ng\t c\u1ee7a\t con\t l\u1eafc\t di\u1ec5n\t ra theo\tth\u1eddi\tgian,\t khi\t s\u1ef1\t d\u1ecbch\t chuy\u1ec3n\t c\u1ee7a\t n\u00f3\t l\u1ec7\tthu\u1ed9c\t v\u00e0o\t v\u1ecb\t tr\u00ed\t c\u1ee7a qu\u1ea3\t\u0111\u1ea5t.\tB\u1edfi\tv\u00ec\tkhi\tquan\ts\u00e1t\tcon\tl\u1eafc,\tch\u00fang\tta\tkh\u00f4ng\tc\u1ea7n\t\u0111\u1ec3\t\u00fd\t\u0111\u1ebfn s\u1ef1\tl\u1ec7\tthu\u1ed9c\tv\u00e0o\tv\u1ecb\ttr\u00ed\tc\u1ee7a\tqu\u1ea3\t\u0111\u1ea5t,\tnh\u01b0ng\tc\u00f3\tth\u1ec3\tso\ts\u00e1nh\tn\u00f3\tv\u1edbi\tb\u1ea5t c\u1ee9\t m\u1ed9t\t v\u1eadt\t n\u00e0o\t kh\u00e1c\t xung\t quanh\t (m\u00e0\t c\u00e1c\t tr\u1ea1ng\t th\u00e1i\t c\u1ee7a\t n\u00f3\t d\u0129 nhi\u00ean\t c\u0169ng\t l\u1ea1i\t l\u1ec7\t thu\u1ed9c\t v\u00e0o\t v\u1ecb\t tr\u00ed\t c\u1ee7a\t qu\u1ea3\t \u0111\u1ea5t),\t cho\t n\u00ean\t d\u1ec5\t h\u00ecnh th\u00e0nh\t \u1ea3o\t t\u01b0\u1edfng\t r\u1eb1ng\t t\u1ea5t\t c\u1ea3\t nh\u1eefng\t v\u1eadt\t m\u00e0\t ch\u00fang\t ta\t d\u00f9ng\t \u0111\u1ec3\t so s\u00e1nh\tl\u00e0\tkh\u00f4ng\tthi\u1ebft\ty\u1ebfu.\t\u0110\u00fang\tv\u1eady,\tch\u00fang\tta\tc\u00f3\tth\u1ec3,\tkhi\tquan\ts\u00e1t chuy\u1ec3n\t \u0111\u1ed9ng\t con\t l\u1eafc,\t ho\u00e0n\t to\u00e0n\t b\u1ecf\t qu\u00ean\t nh\u1eefng\t v\u1eadt\t c\u00f2n\t l\u1ea1i\t c\u1ee7a ngo\u1ea1i\t c\u1ea3nh\t v\u00e0\t th\u1ea5y\t \u1edf\t m\u1ed7i\t v\u1ecb\t tr\u00ed\t c\u1ee7a\t con\t l\u1eafc\t nh\u1eefng\t suy\t ngh\u0129\t v\u00e0 c\u1ea3m\tx\u00fac\tc\u1ee7a\tch\u00fang\tta\tl\u1ea1i\tkh\u00e1c\t\u0111i.\tCho\tn\u00ean,\tth\u1eddi\tgian\td\u01b0\u1eddng\tnh\u01b0 l\u00e0\t m\u1ed9t\t c\u00e1i\t g\u00ec\t \u0111\u1eb7c\t bi\u1ec7t\t v\u00e0\t \u0111\u1ed9c\t l\u1eadp\t m\u00e0\t v\u1ecb\t tr\u00ed\t c\u1ee7a\t con\t l\u1eafc\t t\u00f9y\t thu\u1ed9c v\u00e0o\ts\u1ef1\tdi\u1ec5n\tbi\u1ebfn\tc\u1ee7a\tn\u00f3,\ttrong\tkhi\tc\u00e1c\tv\u1eadt\tkh\u00e1c\tm\u00e0\tch\u00fang\tta\tch\u1ecdn t\u00f9y\t\u00fd\t\u0111\u1ec3\tl\u00e0m\ts\u1ef1\tso\ts\u00e1nh\td\u01b0\u1eddng\tnh\u01b0\tch\u1ec9\t\u0111\u00f3ng\tvai\ttr\u00f2\tt\u00ecnh\tc\u1edd,\tho\u00e0n to\u00e0n\tth\u1ee9\ty\u1ebfu.\tNh\u01b0ng\tch\u00fang\tta\tkh\u00f4ng\t\u0111\u01b0\u1ee3c\tph\u00e9p\tqu\u00ean\tr\u1eb1ng\tt\u1ea5t\tc\u1ea3 m\u1ecdi\t v\u1eadt\t tr\u00ean\t th\u1ebf\t gi\u1edbi\t \u0111\u1ec1u\t c\u00f3\t m\u1ed1i\t li\u00ean\t h\u1ec7\t v\u1edbi\t nhau,\t t\u00f9y\t thu\u1ed9c\t l\u1eabn nhau,\t cho\t n\u00ean\t ngay\t ch\u00fang\t ta,\t c\u00f9ng\t v\u1edbi\t nh\u1eefng\t suy\t ngh\u0129\t c\u1ee7a ch\u00fang\tta,\tc\u0169ng\tl\u00e0\tm\u1ed9t\tph\u1ea7n\tc\u1ee7a\tt\u1ef1\tnhi\u00ean.\tVi\u1ec7c\t\u0111o\tl\u01b0\u1eddng\tnh\u1eefng\ts\u1ef1 thay\t\u0111\u1ed1i\tc\u1ee7a\ts\u1ef1\tv\u1eadt\ttheo\tth\u1eddi\tgian\tl\u00e0\tho\u00e0n\tto\u00e0n\tv\u01b0\u1ee3t\tqu\u00e1\tgi\u1edbi\th\u1ea1n v\u00e0\t kh\u1ea3\t n\u0103ng\t c\u1ee7a\t ch\u00fang\t ta.\t \u0110\u00fang\t h\u01a1n,\t th\u1eddi\t gian\t l\u00e0\t m\u1ed9t\t s\u1ef1\t tr\u1eebu t\u01b0\u1ee3ng\th\u00f3a\tm\u00e0\tch\u00fang\tta\t\u0111\u00e3\t\u0111\u1ea1t\tt\u1edbi\tth\u00f4ng\tqua\tnh\u1eefng\tbi\u1ebfn\t\u0111\u1ed5i\tc\u1ee7a s\u1ef1\tv\u1eadt,\tb\u1edfi\tv\u00ec\tch\u00fang\tta\tkh\u00f4ng\tb\u1ecb\tr\u00e0ng\tbu\u1ed9c\tv\u00e0o\tm\u1ed9t\tth\u01b0\u1edbc\t\u0111o\tnh\u1ea5t \u0111\u1ecbnh\tn\u00e0o\tc\u1ea3,\tb\u1edfi\tv\u00ec\tt\u1ea5t\tc\u1ea3\tm\u1ecdi\tv\u1eadt\t\u0111\u1ec1u\tn\u1ed1i\tk\u1ebft\tl\u1ea7n\tnhau.","Ch\u00fang\t ta\t g\u1ecdi\t m\u1ed9t\t chuy\u1ec3n\t \u0111\u1ed9ng\t l\u00e0\t \u0111\u1ec1u\t n\u1ebfu\t \u1edf\t \u0111\u00f3\t c\u00e1c\t gia l\u01b0\u1ee3ng[126]\t b\u1eb1ng\t nhau\t c\u1ee7a\t \u0111o\u1ea1n\t \u0111\u01b0\u1eddng\t v\u1ea1ch\t ra\t t\u01b0\u01a1ng\t \u1ee9ng\t v\u1edbi nh\u1eefng\t gia\t l\u01b0\u1ee3ng\t b\u1eb1ng\t nhau\t c\u1ee7a\t \u0111o\u1ea1n\t \u0111\u01b0\u1eddng\t v\u1ea1ch\t ra\t c\u1ee7a\t m\u1ed9t chuy\u1ec3n\t\u0111\u1ed9ng\tch\u00fang\tta\tl\u1ea5y\tl\u00e0m\tso\ts\u00e1nh,\tch\u1eb3ng\th\u1ea1n\tchuy\u1ec3n\t\u0111\u1ed9ng quay\t c\u1ee7a\t qu\u1ea3\t \u0111\u1ea5t.\t M\u1ed9t\t chuy\u1ec3n\t \u0111\u1ed9ng,\t n\u1ebfu\t \u0111em\t so\t s\u00e1nh\t v\u1edbi\t m\u1ed9t chuy\u1ec3n\t\u0111\u1ed9ng\tkh\u00e1c,\tc\u00f3\tth\u1ec3\t\u0111\u1ec1u.\tNh\u01b0ng\tc\u00e2u\th\u1ecfi,\tm\u1ed9t\tchuy\u1ec3n\t\u0111\u1ed9ng t\u1ef1\t n\u00f3\t c\u00f3\t \u0111\u1ec1u\t hay\t kh\u00f4ng,\t l\u00e0\t v\u00f4\t ngh\u0129a.\t C\u0169ng\t v\u00f4\t ngh\u0129a\t nh\u01b0\t th\u1ebf,\t khi ta\tn\u00f3i\t\u0111\u1ebfn\tm\u1ed9t\t\\\"th\u1eddi\tgian\ttuy\u1ec7t\t\u0111\u1ed1i\\\"\t-\tm\u1ed9t\tth\u1eddi\tgian\t\u0111\u1ed9c\tl\u1eadp\tv\u1edbi\tm\u1ecdi thay\t \u0111\u1ed5i.\t Th\u1eddi\t gian\t tuy\u1ec7t\t \u0111\u1ed1i\t n\u00e0y\t kh\u00f4ng\t th\u1ec3\t \u0111\u01b0\u1ee3c\t \u0111o\t b\u1eb1ng\t s\u1ef1\t so s\u00e1nh\tv\u1edbi\tb\u1ea5t\tc\u1ee9\tchuy\u1ec3n\t\u0111\u1ed9ng\tn\u00e0o;\tdo\t\u0111\u00f3\tn\u00f3\tkh\u00f4ng\tc\u00f3\tb\u1ea5t\tc\u1ee9\tgi\u00e1\ttr\u1ecb th\u1ef1c\t ti\u1ec5n\t hay\t khoa\t h\u1ecdc\t n\u00e0o,\t kh\u00f4ng\t ai\t c\u00f3\t th\u1ea9m\t quy\u1ec1n\t n\u00f3i\t r\u1eb1ng anh\t ta\t bi\u1ebft\t v\u1ec1\t n\u00f3.\t Th\u1eddi\t gian\t l\u00e0\t m\u1ed9t\t kh\u00e1i\t ni\u1ec7m\t \\\"si\u00eau\t h\u00ecnh\\\"\t v\u00f4\t b\u1ed5. [...] Ch\u00fang\t ta\t \u0111\u00e3\t \u0111i\t \u0111\u1ebfn\t \u0111\u01b0\u1ee3c\t \u00fd\t t\u01b0\u1edfng\t th\u1eddi\t gian\t \u2013\t \u0111\u1ec3\t di\u1ec5n\t t\u1ea3\t ng\u1eafn g\u1ecdn\tv\u00e0\td\u1ec5\thi\u1ec3u\t\u2013\tb\u1eb1ng\tm\u1ed1i\tli\u00ean\th\u1ec7\tc\u1ee7a\tn\u1ed9i\tdung\tch\u1ee9a\t\u0111\u1ef1ng\ttrong v\u00f9ng\tc\u1ee7a\tb\u1ed9\tnh\u1edb\tv\u1edbi\tn\u1ed9i\tdung\tch\u1ee9a\t\u0111\u1ef1ng\ttrong\tv\u00f9ng\tc\u1ee7a\ttri\tgi\u00e1c ch\u00fang\t ta.\t Khi\t ch\u00fang\t ta\t n\u00f3i\t th\u1eddi\t gian\t tr\u00f4i\t \u0111i\t theo\t m\u1ed9t\t ngh\u0129a\t n\u00e0o \u0111\u00f3,\t ch\u00fang\t ta\t ngh\u0129\t r\u1eb1ng\t c\u00e1c\t s\u1ef1\t ki\u1ec7n\t v\u1eadt\t l\u00fd\t (v\u00e0\t do\t \u0111\u00f3\t c\u00e1c\t s\u1ef1\t ki\u1ec7n sinh\tl\u00fd\th\u1ecdc)\tch\u1ec9\tdi\u1ec5n\tra\ttheo\tm\u1ed9t\tngh\u0129a\tn\u00e0o\t\u0111\u1ea5y\tnh\u1ea5t\t\u0111\u1ecbnh.\tC\u00e1c\ts\u1ef1 kh\u00e1c\tbi\u1ec7t\tv\u1ec1\tnhi\u1ec7t\t\u0111\u1ed9,\tv\u1ec1\t\u0111i\u1ec7n,\tv\u1ec1\tm\u1ee9c[127]\tn\u00f3i\tchung,\tn\u1ebfu\t\u0111\u1ec3\tcho ch\u00fang\t t\u1ef1\t nhi\u00ean,\t s\u1ebd\t kh\u00f4ng\t ph\u00e1t\t tri\u1ec3n\t l\u1edbn\t ra,\t m\u00e0\t nh\u1ecf\t l\u1ea1i.\t N\u1ebfu ch\u00fang\tta\tngh\u0129\t\u0111\u1ebfn\thai\tv\u1eadt\tth\u1ec3\t\u1edf\tnhi\u1ec7t\t\u0111\u1ed9\tkh\u00e1c\tnhau\t\u0111\u01b0\u1ee3c\t\u0111\u1eb7t\tti\u1ebfp x\u00fac\t nhau\t v\u00e0\t \u0111\u1ec3\t t\u1ef1\t ch\u00fang\t ho\u1ea1t\t \u0111\u1ed9ng,\t ch\u00fang\t ta\t s\u1ebd\t th\u1ea5y\t s\u1ef1\t kh\u00e1c bi\u1ec7t\tc\u1ee7a\tnhi\u1ec7t\t\u0111\u1ed9\tl\u1edbn\th\u01a1n\ttrong\tv\u00f9ng\th\u1ed3i\t\u1ee9c[128]\ts\u1ebd\ttr\u00f9ng\tkh\u1edbp\tv\u1edbi c\u00e1c\t s\u1ef1\t kh\u00e1c\t bi\u1ec7t\t nh\u1ecf\t h\u01a1n\t c\u1ee7a\t nhi\u1ec7t\t \u0111\u1ed9\t trong\t v\u00f9ng\t tri\t gi\u00e1c[129], kh\u00f4ng\t ph\u1ea3i\t ng\u01b0\u1ee3c\t l\u1ea1i.\t Trong\t t\u1ea5t\t c\u1ea3\t nh\u1eefng\t c\u00e1i\t n\u00e0y\t hi\u1ec3n\t hi\u1ec7n\t l\u00ean m\u1ed9t\t m\u1ed1i\t li\u00ean\t h\u1ec7\t s\u00e2u\t xa\t v\u00e0\t \u0111\u1eb7c\t th\u00f9\t gi\u1eefa\t c\u00e1c\t s\u1ef1\t v\u1eadt.\t \u0110\u00f2i\t h\u1ecfi\t v\u00e0o th\u1eddi\t\u0111i\u1ec3m\thi\u1ec7n\tt\u1ea1i\tm\u1ed9t\ts\u1ef1\tl\u00e0m\ts\u00e1ng\tt\u1ecf\tho\u00e0n\tto\u00e0n,\ttheo\tc\u00e1ch\tth\u1ee9c c\u1ee7a\ttri\u1ebft\th\u1ecdc\tt\u01b0\tbi\u1ec7n,\tc\u00f3\tngh\u0129a\tl\u00e0\tmu\u1ed1n\td\u1ef1\t\u0111o\u00e1n\t\u0111\u01b0\u1ee3c\tnh\u1eefng\tk\u1ebft qu\u1ea3\tc\u1ee7a\tm\u1ed9t\tng\u00e0nh\tnghi\u00ean\tc\u1ee9u\t\u0111\u1eb7c\tbi\u1ec7t\ttrong\tt\u01b0\u01a1ng\tlai,\tngh\u0129a\tl\u00e0 m\u1ed9t\tng\u00e0nh\tkhoa\th\u1ecdc\tt\u1ef1\tnhi\u00ean\t\u0111\u01b0\u1ee3c\tho\u00e0n\tthi\u1ec7n\th\u00f3a.\t[...] 3.\t C\u00e1c\t quan\t \u0111i\u1ec3m\t t\u01b0\u01a1ng\t t\u1ef1\t li\u00ean\t quan\t \u0111\u1ebfn\t th\u1eddi\t gian\t \u0111\u01b0\u1ee3c\t ph\u00e1t tri\u1ec3n\tb\u1edfi\tNewton\t\u0111\u1ed1i\tv\u1edbi\tkh\u00f4ng\tgian\tv\u00e0\tchuy\u1ec3n\t\u0111\u1ed9ng[130]... N\u1ebfu\t trong\t m\u1ed9t\t h\u1ec7\t th\u1ed1ng\t kh\u00f4ng\t gian\t v\u1eadt\t ch\u1ea5t\t c\u00f3\t nhi\u1ec1u\t kh\u1ed1i l\u01b0\u1ee3ng\tv\u1edbi\tnh\u1eefng\tv\u1eadn\tt\u1ed1c\tkh\u00e1c\tnhau,\tv\u00e0\tch\u00fang\tc\u00f3\tth\u1ec3\tt\u00e1c\td\u1ee5ng\th\u1ed7 t\u01b0\u01a1ng\t v\u1edbi\t nhau,\t th\u00ec\t \u0111\u1ed1i\t v\u1edbi\t ch\u00fang\t ta\t c\u00e1c\t kh\u1ed1i\t l\u01b0\u1ee3ng\t n\u00e0y\t t\u01b0\u1ee3ng tr\u01b0ng\t cho\t c\u00e1c\t l\u1ef1c.\t Ch\u00fang\t ta\t ch\u1ec9\t c\u00f3\t th\u1ec3\t bi\u1ebft\t \u0111\u01b0\u1ee3c\t c\u00e1c\t l\u1ef1c\t n\u00e0y\t l\u1edbn","nh\u01b0\t th\u1ebf\t n\u00e0o\t khi\t ch\u00fang\t ta\t bi\u1ebft\t \u0111\u01b0\u1ee3c\t c\u00e1c\t v\u1eadn\t t\u1ed1c\t m\u00e0\t c\u00e1c\t kh\u1ed1i l\u01b0\u1ee3ng\tc\u1ea7n\tph\u1ea3i\t\u0111\u01b0\u1ee3c\t\u0111\u01b0a\tl\u00ean\tt\u1edbi\t\u0111\u00f3.\tC\u00e1c\tkh\u1ed1i\tl\u01b0\u1ee3ng\t\u0111\u1ee9ng\ty\u00ean\tc\u0169ng l\u00e0\tc\u00e1c\tl\u1ef1c,\tn\u1ebfu\tkh\u00f4ng\tph\u1ea3i\tt\u1ea5t\tc\u1ea3\tc\u00e1c\tkh\u1ed1i\tl\u01b0\u1ee3ng\t\u0111\u1ee9ng\ty\u00ean.\tCh\u00fang ta\t ch\u1eb3ng\t h\u1ea1n\t ngh\u0129\t \u0111\u1ebfn\t c\u00e1i\t th\u00f9ng\t n\u01b0\u1edbc\t chuy\u1ec3n\t \u0111\u1ed9ng\t quay\t c\u1ee7a Newton\t l\u00fac\t n\u01b0\u1edbc\t trong\t \u0111\u00f3\t ch\u01b0a\t quay.\t N\u1ebfu\t kh\u1ed1i\t l\u01b0\u1ee3ng\t m\t c\u00f3\t v\u1eadn t\u1ed1c\tv1\tmu\u1ed1n\t\u0111\u01b0\u1ee3c\t\u0111\u01b0a\tl\u00ean\tv\u1eadn\tt\u1ed1c\tv2\tth\u00ec\tn\u00f3\tc\u1ea7n\t\u0111\u1ebfn\tm\u1ed9t\tl\u1ef1c\tb\u1eb1ng p\t=\tm(v1\t\u2013\tv2)\/t,\thay\tl\u00e0\tm\u1ed9t\tc\u00f4ng\tlao\t\u0111\u1ed9ng\tps\t=\tm(v1\t2\t-\tv2\t2).\tT\u1ea5t c\u1ea3\tc\u00e1c\tkh\u1ed1i\tl\u01b0\u1ee3ng,\tt\u1ea5t\tc\u1ea3\tc\u00e1c\tv\u1eadn\tt\u1ed1c,\tv\u00e0\tdo\t\u0111\u00f3\tt\u1ea5t\tc\u1ea3\tc\u00e1c\tl\u1ef1c\t\u0111\u1ec1u\tl\u00e0 t\u01b0\u01a1ng\t \u0111\u1ed1i.\t Ch\u00fang\t ta\t kh\u00f4ng\t th\u1ec3\t c\u00f3\t m\u1ed9t\t quy\u1ebft\t \u0111\u1ecbnh\t n\u00e0o\t v\u1ec1\t c\u00e1i t\u01b0\u01a1ng\t\u0111\u1ed1i\thay\tc\u00e1i\ttuy\u1ec7t\t\u0111\u1ed1i,\td\u00f9\tc\u00f3\tb\u1ecb\tb\u1eaft\tbu\u1ed9c\tl\u00e0m\t\u0111i\u1ec1u\tn\u00e0y,\t\u0111\u1ec3\tt\u1eeb \u0111\u00f3\t c\u00f3\t th\u1ec3\t r\u00fat\t ra\t \u0111\u01b0\u1ee3c\t m\u1ed9t\t l\u1ee3i\t \u00edch\t tri\t th\u1ee9c\t hay\t m\u1ed9t\t l\u1ee3i\t \u00edch\t n\u00e0o kh\u00e1c.\tN\u1ebfu\tv\u1eabn\tc\u00f2n\tc\u00f3\tc\u00e1c\tt\u00e1c\tgi\u1ea3\thi\u1ec7n\t\u0111\u1ea1i\tt\u1ef1\t\u0111\u1ec3\tcho\tm\u00ecnh\tb\u1ecb\tc\u00e1m d\u1ed7\t b\u1edfi\t c\u00e1c\t l\u00fd\t l\u1ebd\t c\u1ee7a\t Newton\t l\u1ea5y\t t\u1eeb\t th\u00f9ng\t n\u01b0\u1edbc\t \u0111\u1ec3\t ph\u00e2n\t bi\u1ec7t chuy\u1ec3n\t\u0111\u1ed9ng\tt\u01b0\u01a1ng\t\u0111\u1ed1i\tv\u00e0\ttuy\u1ec7t\t\u0111\u1ed1i,\t\u0111\u00f3\tl\u00e0\tv\u00ec\th\u1ecd\tkh\u00f4ng\tngh\u0129\tr\u1eb1ng h\u1ec7\t th\u1ed1ng\t th\u1ebf\t gi\u1edbi\t \u0111\u01b0\u1ee3c\t cho\t ch\u00fang\t ta\t m\u1ed9t\t l\u1ea7n,\t trong\t khi\t quan \u0111i\u1ec3m\t c\u1ee7a\t Ptolemy\t hay\t Copernicus\t l\u1ea1i\t l\u00e0\t nh\u1eefng\t c\u00e1ch\t l\u00fd\t gi\u1ea3i\t c\u1ee7a ch\u00fang\tta,\tv\u00e0\tc\u1ea3\thai\t\u0111\u1ec1u\tl\u00e0\tth\u1ef1c\tt\u1ed3n\tnh\u01b0\tnhau\tc\u1ea3.\tH\u00e3y\tc\u1ed1\tg\u1eafng\tgi\u1eef y\u00ean\t th\u00f9ng\t n\u01b0\u1edbc\t Newton,\t v\u00e0\t cho\t quay\t b\u1ea7u\t tr\u1eddi\t c\u00e1c\t sao\t c\u1ed1\t \u0111\u1ecbnh, r\u1ed3i\tch\u1ee9ng\tminh\ts\u1ef1\tv\u1eafng\tm\u1eb7t\tc\u1ee7a\tc\u00e1c\tl\u1ef1c\tly\tt\u00e2m. 4.\t Vi\u1ec7c\t Newton\t \u0111\u00e3\t h\u00e0nh\t \u0111\u1ed9ng,\t trong\t c\u00e1c\t suy\t ngh\u0129\t v\u1eeba\t \u0111\u01b0\u1ee3c tr\u00ecnh\tb\u00e0y,\t\u0111i\tng\u01b0\u1ee3c\tl\u1ea1i\tv\u1edbi\tch\u1ee7\t\u0111\u00edch\tc\u1ee7a\t\u00f4ng,\tr\u1eb1ng\tch\u1ec9\tnghi\u00ean\tc\u1ee9u nh\u1eefng\t c\u00e1i\t th\u1ef1c\t t\u1ed3n\t th\u00f4i,\t \u0111i\u1ec1u\t \u0111\u00f3\t h\u1ea7u\t nh\u01b0\t kh\u00f4ng\t c\u1ea7n\t ph\u1ea3i\t n\u00f3i\t ra. V\u1ec1\t kh\u00f4ng\t gian\t tuy\u1ec7t\t \u0111\u1ed1i\t v\u00e0\t chuy\u1ec3n\t \u0111\u1ed9ng\t tuy\u1ec7t\t \u0111\u1ed1i,\t kh\u00f4ng\t ai\t c\u00f3 th\u1ea9m\t quy\u1ec1n\t \u0111\u1ec3\t ph\u00e1t\t bi\u1ec3u\t \u0111i\u1ec1u\t g\u00ec\t c\u1ea3.\t Ch\u00fang\t l\u00e0\t nh\u1eefng\t s\u1ea3n\t ph\u1ea9m c\u1ee7a\t t\u01b0\t duy\t thu\u1ea7n\t t\u00fay\t ch\u1ee9\t kh\u00f4ng\t ph\u1ea3i\t s\u1ea3n\t ph\u1ea9m\t c\u1ee7a\t th\u1ef1c nghi\u1ec7m.\tT\u1ea5t\tc\u1ea3\tnh\u1eefng\tnguy\u00ean\tl\u00fd\tc\u1ee7a\tch\u00fang\tta\ttrong\tc\u01a1\th\u1ecdc,\tnh\u01b0 \u0111\u00e3\t \u0111\u01b0\u1ee3c\t ch\u1ee9ng\t minh\t chi\t ti\u1ebft,\t l\u00e0\t nh\u1eefng\t tri\t th\u1ee9c\t th\u1ef1c\t nghi\u1ec7m\t v\u1ec1 c\u00e1c\t v\u1ecb\t tr\u00ed\t v\u00e0\t chuy\u1ec3n\t \u0111\u1ed9ng\t t\u01b0\u01a1ng\t\u0111\u1ed1i\t c\u1ee7a\t c\u00e1c\t v\u1eadt\t th\u1ec3.\t Ngay\t trong nh\u1eefng\t v\u00f9ng\t m\u00e0\t \u1edf\t \u0111\u00f3\t ng\u01b0\u1eddi\t ta\t xem\t ch\u00fang\t l\u00e0\t c\u00f3\t hi\u1ec7u\t l\u1ef1c,\t ch\u00fang c\u0169ng\tkh\u00f4ng\tth\u1ec3\tv\u00e0\tkh\u00f4ng\t\u0111\u01b0\u1ee3c\tph\u00e9p\tch\u1ea5p\tnh\u1eadn\tm\u00e0\tkh\u00f4ng\tc\u00f3\ts\u1ef1 ki\u1ec3m\t ch\u1ee9ng\t th\u1ef1c\t nghi\u1ec7m\t tr\u01b0\u1edbc\t \u0111\u00f3.\t Kh\u00f4ng\t ai\t c\u00f3\t th\u1ea9m\t quy\u1ec1n\t n\u1edbi r\u1ed9ng\t nh\u1eefng\t nguy\u00ean\t l\u00fd\t n\u00e0y\t v\u01b0\u1ee3t\t qua\t kh\u1ecfi\t gi\u1edbi\t h\u1ea1n\t c\u1ee7a\t kinh nghi\u1ec7m.\t Th\u1ef1c\t t\u1ebf,\t m\u1ed9t\t s\u1ef1\t n\u1edbi\t r\u1ed9ng\t nh\u01b0\t th\u1ebf\t c\u0169ng\t l\u00e0\t v\u00f4\t ngh\u0129a,\t b\u1edfi v\u00ec\tkh\u00f4ng\tai\tbi\u1ebft\t\u00e1p\td\u1ee5ng\tn\u00f3\tth\u1ebf\tn\u00e0o. Ch\u00fang\t ta\t t\u1ea5t\t y\u1ebfu\t ph\u1ea3i\t gi\u1ea3\t thi\u1ebft\t r\u1eb1ng\t kh\u00fac\t quanh\t m\u1edbi\t c\u1ee7a Copernicus\t trong\t c\u00e1ch\t nh\u00ecn\t h\u1ec7\t th\u1ed1ng\t th\u1ebf\t gi\u1edbi\t \u0111\u00e3\t \u0111\u1ec3\t l\u1ea1i\t nh\u1eefng d\u1ea5u\t\u1ea5n\ts\u00e2u\t\u0111\u1eadm\ttrong\tt\u01b0\tduy\tc\u1ee7a\tGalilei\tv\u00e0\tNewton.\tNh\u01b0ng\ttrong khi\tGalilei\tch\u1ecdn\tkh\u00f4ng\tgian\tc\u1ee7a\tc\u00e1c\tv\u00ec\tsao\tc\u1ed1\t\u0111\u1ecbnh\tnh\u01b0\tm\u1ed9t\th\u1ec7\tt\u1ecda","\u0111\u1ed9\t m\u1edbi\t m\u1ed9t\t c\u00e1ch\t h\u1ed3n\t nhi\u00ean\t trong\t l\u00fd\t thuy\u1ebft\t th\u1ee7y\t tri\u1ec1u\t c\u1ee7a\t \u00f4ng, th\u00ec\t ch\u00fang\t ta\t th\u1ea5y\t Newton\t l\u1ea1i\t nghi\t ng\u1edd,\t kh\u00f4ng\t bi\u1ebft\t m\u1ed9t\t v\u00ec\t sao\t c\u1ed1 \u0111\u1ecbnh\tcho\ttr\u01b0\u1edbc\tc\u00f3\tph\u1ea3i\t\u0111\u1ee9ng\ty\u00ean\tth\u1ef1c\thay\tl\u00e0\tbi\u1ec3u\tki\u1ebfn[131].\t\u0110i\u1ec1u n\u00e0y\t d\u01b0\u1eddng\t nh\u01b0\t g\u00e2y\t ra\t cho\t \u00f4ng\t s\u1ef1\t kh\u00f3\t kh\u0103n\t \u0111\u1ec3\t ph\u00e2n\t bi\u1ec7t\t gi\u1eefa chuy\u1ec3n\t \u0111\u1ed9ng\t th\u1ef1c\t (tuy\u1ec7t\t \u0111\u1ed1i)\t v\u00e0\t chuy\u1ec3n\t \u0111\u1ed9ng\t bi\u1ec3u\t ki\u1ebfn\t (t\u01b0\u01a1ng \u0111\u1ed1i).\t T\u1eeb\t \u0111\u00f3\t \u00f4ng\t th\u1ea5y\t b\u1ecb\t b\u1eaft\t bu\u1ed9c\t ph\u1ea3i\t d\u1ef1ng\t l\u00ean\t kh\u00e1i\t ni\u1ec7m\t kh\u00f4ng gian\t tuy\u1ec7t\t \u0111\u1ed1i.\t B\u1eb1ng\t nh\u1eefng\t kh\u1ea3o\t s\u00e1t\t ti\u1ebfp\t t\u1ee5c\t theo\t h\u01b0\u1edbng\t n\u00e0y\t - th\u1ea3o\t lu\u1eadn\t th\u00ed\t nghi\u1ec7m\t c\u1ee7a\t c\u00e1c\t qu\u1ea3\t c\u1ea7u\t quay\t \u0111\u01b0\u1ee3c\t n\u1ed1i\t li\u1ec1n\t nhau b\u1eb1ng\t m\u1ed9t\t s\u1ee3i\t d\u00e2y,\t v\u00e0\t th\u00ed\t nghi\u1ec7m\t c\u1ee7a\t c\u00e1i\t th\u00f9ng\t n\u01b0\u1edbc\t quay[132]\t - \u00f4ng\t \u1ea5y\t tuy\t kh\u00f4ng\t tin\t t\u01b0\u1edfng\t m\u1ed9t\t s\u1ef1\t chuy\u1ec3n\t \u0111\u1ed9ng\t tuy\u1ec7t\t \u0111\u1ed1i\t n\u00e0o, nh\u01b0ng\tc\u00f3\tth\u1ec3\tph\u00e1t\thi\u1ec7n\tra\tm\u1ed9t\tchuy\u1ec3n\t\u0111\u1ed9ng\tquay\ttuy\u1ec7t\t\u0111\u1ed1i.\tD\u01b0\u1edbi c\u00e1i\tt\u00ean\tchuy\u1ec3n\t\u0111\u1ed9ng\tquay\ttuy\u1ec7t\t\u0111\u1ed1i\t\u00f4ng\tta\thi\u1ec3u\tm\u1ed9t\tchuy\u1ec3n\t\u0111\u1ed9ng quay\t \u0111\u1ed1i\t v\u1edbi\t c\u00e1c\t v\u00ec\t sao\t c\u1ed1\t \u0111\u1ecbnh,\t \u1edf\t \u0111\u00f3\t l\u1ef1c\t ly\t t\u00e2m\t lu\u00f4n\t lu\u00f4n\t c\u00f3\t th\u1ec3 \u0111\u01b0\u1ee3c\tch\u1ee9ng\tminh\thi\u1ec7n\th\u1eefu.\t\\\"L\u00e0m\tsao\tch\u00fang\tta\tk\u1ebft\tlu\u1eadn\t\u0111\u01b0\u1ee3c\tv\u1ec1 chuy\u1ec3n\t\u0111\u1ed9ng\tth\u1ef1c\tt\u1eeb\tc\u00e1c\tnguy\u00ean\tnh\u00e2n,\th\u1ec7\tqu\u1ea3,\tv\u00e0\tnh\u1eefng\ts\u1ef1\tkh\u00e1c bi\u1ec7t\tbi\u1ec3u\tki\u1ebfn;\tv\u00e0\tng\u01b0\u1ee3c\tl\u1ea1i,\tl\u00e0m\tsao\tt\u1eeb\tc\u00e1c\tchuy\u1ec3n\t\u0111\u1ed9ng,\tth\u1ef1c\thay bi\u1ec3u\t ki\u1ebfn,\t ch\u00fang\t ta\t k\u1ebft\t lu\u1eadn\t \u0111\u01b0\u1ee3c\t v\u1ec1\t nguy\u00ean\t nh\u00e2n\t v\u00e0\t t\u00e1c\t d\u1ee5ng: nh\u1eefng\t \u0111i\u1ec1u\t \u0111\u00f3\t s\u1ebd\t \u0111\u01b0\u1ee3c\t gi\u1ea3i\t th\u00edch\t chi\t ti\u1ebft\t h\u01a1n\t trong\t ph\u1ea7n\t kh\u1ea3o lu\u1eadn\t sau\t \u0111\u00e2y\\\",\t Newton\t n\u00f3i\t trong\t ph\u1ea7n\t b\u00ecnh\t lu\u1eadn\t v\u00e0\t minh\t h\u1ecda\t \u1edf ph\u1ea7n\t cu\u1ed1i\t c\u1ee7a\t c\u00e1c\t \u0111\u1ecbnh\t ngh\u0129a.\t Kh\u00f4ng\t gian\t \u0111\u1ee9ng\t y\u00ean\t c\u1ee7a\t c\u00e1c\t v\u00ec sao\tc\u1ed1\t\u0111\u1ecbnh\td\u01b0\u1eddng\tnh\u01b0\tc\u0169ng\t\u0111\u00e3\tg\u00e2y\tm\u1ed9t\t\u1ea5n\tt\u01b0\u1ee3ng\tnh\u1ea5t\t\u0111\u1ecbnh\tl\u00ean Newton.\tH\u1ec7\tth\u1ed1ng\tquy\tchi\u1ebfu\tt\u1ef1\tnhi\u00ean\t\u0111\u1ed1i\tv\u1edbi\t\u00f4ng\tl\u00e0\th\u1ec7\tth\u1ed1ng\tc\u00f3 b\u1ea5t\t k\u1ef3\t chuy\u1ec3n\t \u0111\u1ed9ng\t t\u1ecbnh\t ti\u1ebfn\t \u0111\u1ec1u\t kh\u00f4ng\t quay\t (\u0111\u1ed1i\t v\u1edbi\t kh\u00f4ng gian\t c\u1ee7a\t c\u00e1c\t sao\t c\u1ed1\t \u0111\u1ecbnh).\t Ph\u1ea3i\t ch\u0103ng\t nh\u1eefng\t l\u1eddi\t tr\u00edch\t d\u1eabn\t trong d\u1ea5u\t ngo\u1eb7c\t v\u1eeba\t r\u1ed3i\t ch\u01b0a\t g\u00e2y\t \u0111\u01b0\u1ee3c\t \u1ea5n\t t\u01b0\u1ee3ng,\t r\u1eb1ng\t Newton\t \u0111\u00e3\t vui m\u1eebng\t \u0111i\t \u0111\u1ebfn\t \u0111\u01b0\u1ee3c\t nh\u1eefng\t c\u00e2u\t h\u1ecfi\t \u00edt\t nan\t gi\u1ea3i\t h\u01a1n\t v\u00e0\t c\u00f3\t th\u1ec3\t \u0111\u01b0\u1ee3c kinh\tnghi\u1ec7m\tki\u1ec3m\tch\u1ee9ng? Ch\u00fang\t ta\t h\u00e3y\t \u0111i\t v\u00e0o\t chi\t ti\u1ebft.\t N\u1ebfu\t ch\u00fang\t ta\t n\u00f3i\t m\u1ed9t\t v\u1eadt\t th\u1ec3\t K thay\t\u0111\u1ed5i\th\u01b0\u1edbng\tv\u00e0\tv\u1eadn\tt\u1ed1c\tc\u1ee7a\tn\u00f3\tch\u1ec9\tdo\t\u1ea3nh\th\u01b0\u1edfng\tc\u1ee7a\tm\u1ed9t\tv\u1eadt th\u1ec3\t kh\u00e1c\t K\u2019,\t th\u00ec\t ch\u00fang\t ta\t kh\u00f4ng\t th\u1ec3\t c\u00f3\t \u0111\u01b0\u1ee3c\t nh\u1eadn\t th\u1ee9c\t n\u00e0y\t n\u1ebfu kh\u00f4ng\tc\u00f3\ts\u1ef1\tm\u1eb7t\tc\u1ee7a\tnh\u1eefng\tv\u1eadt\tth\u1ec3\tkh\u00e1c\tA,\tB,\tC,...\t\u0111\u1ec3\tcho\tchuy\u1ec3n \u0111\u1ed9ng\tc\u1ee7a\tv\u1eadt\tth\u1ec3\tK\t\u0111\u01b0\u1ee3c\t\u0111\u00e1nh\tgi\u00e1\td\u1ef1a\ttr\u00ean\tch\u00fang.\tDo\t\u0111\u00f3\tth\u1ef1c\tt\u1ebf ch\u00fang\t\u0111\u00e3\tnh\u1eadn\tth\u1ee9c\tm\u1ed9t\tm\u1ed1i\tquan\th\u1ec7\tc\u1ee7a\tv\u1eadt\tth\u1ec3\tK\tv\u1edbi\tA,\tB,\tC,... N\u1ebfu\tb\u00e2y\tgi\u1edd\tth\u00ecnh\tl\u00ecnh\tch\u00fang\tta\tqu\u00ean\t\u0111i\tA,\tB,\tC,...\tv\u00e0\tmu\u1ed1n\tn\u00f3i\tv\u1ec1 s\u1ef1\t v\u1eadn\t h\u00e0nh\t c\u1ee7a\t K\t trong\t kh\u00f4ng\t gian\t tuy\u1ec7t\t \u0111\u1ed1i,\t th\u00ec\t ch\u00fang\t ta\t s\u1ebd l\u00e0m\thai\tl\u1ea7n\tsai\tph\u1ea1m.\tL\u1ea7n\tth\u1ee9\tnh\u1ea5t,\tch\u00fang\tta\ts\u1ebd\tkh\u00f4ng\tth\u1ec3\tbi\u1ebft\tK v\u1eadn\t h\u00e0nh\t th\u1ebf\t n\u00e0o\t trong\t s\u1ef1\t v\u1eafng\t m\u1eb7t\t c\u1ee7a\t A,\tB,\tC,...;\t l\u1ea7n\t th\u1ee9\t hai, ch\u00fang\t ta\t s\u1ebd\t thi\u1ebfu\t ph\u01b0\u01a1ng\t ti\u1ec7n\t \u0111\u1ec3\t \u0111\u00e1nh\t gi\u00e1\t s\u1ef1\t v\u1eadn\t h\u00e0nh\t c\u1ee7a\t v\u1eadt","th\u1ec3\tK,\tv\u00e0\tki\u1ec3m\ttra\tph\u00e1n\t\u0111o\u00e1n\tc\u1ee7a\tch\u00fang\tta,\t\u0111i\u1ec1u\tsau\t\u0111\u00f3\ts\u1ebd\tm\u1ea5t\t\u0111i m\u1ecdi\t\u00fd\tngh\u0129a\tkhoa\th\u1ecdc.\t[...] Chuy\u1ec3n\t \u0111\u1ed9ng\t c\u1ee7a\t m\u1ed9t\t v\u1eadt\t th\u1ec3\t K\t ch\u1ec9\t c\u00f3\t th\u1ec3\t \u0111\u01b0\u1ee3c\t \u0111\u00e1nh\t gi\u00e1\t \u0111\u1ed1i v\u1edbi\tc\u00e1c\tv\u1eadt\tth\u1ec3\tkh\u00e1c\tA,\tB,\tC,...\tNh\u01b0ng\tv\u00ec\tch\u00fang\tta\tlu\u00f4n\tlu\u00f4n\tc\u00f3\t\u0111\u1ee7 m\u1ed9t\t s\u1ed1\t c\u00e1c\t v\u1eadt\t th\u1ec3\t \u0111\u1ec3\t t\u00f9y\t \u00fd\t s\u1eed\t d\u1ee5ng,\t v\u00e0\t ch\u00fang\t \u0111\u1ee9ng\t y\u00ean\t t\u01b0\u01a1ng \u0111\u1ed1i\tnhau,\tho\u1eb7c\tch\u1ec9\tthay\t\u0111\u1ed5i\tv\u1ecb\ttr\u00ed\tr\u1ea5t\tch\u1eadm,\tdo\t\u0111\u00f3\tch\u00fang\tta\tkh\u00f4ng l\u1ec7\t thu\u1ed9c\t v\u00e0o\t m\u1ed9t\t v\u1eadt\t th\u1ec3\t nh\u1ea5t\t \u0111\u1ecbnh,\t cho\t n\u00ean\t ch\u00fang\t ta\t khi\t th\u00ec\t b\u1ecf qua\t\u0111\u01b0\u1ee3c\tv\u1eadt\tth\u1ec3\tn\u00e0y,\tkhi\tth\u00ec\tb\u1ecf\tqua\t\u0111\u01b0\u1ee3c\tv\u1eadt\tth\u1ec3\tkia.\tB\u1eb1ng\tc\u00e1ch n\u00e0y\t ng\u01b0\u1eddi\t ta\t d\u1ea7n\t d\u1ea7n\t v\u1eefng\t tin\t cho\t r\u1eb1ng\t c\u00e1c\t v\u1eadt\t th\u1ec3\t sau\t n\u00f3i chung\tl\u00e0\tkh\u00f4ng\tquan\ttr\u1ecdng. R\u1ea5t\t c\u00f3\t th\u1ec3\t c\u00e1c\t v\u1eadt\t th\u1ec3\t c\u00f4\t l\u1eadp\t A,\t B,\t C,...\t ch\u1ec9\t \u0111\u00f3ng\t vai\t tr\u00f2\t ph\u1ee5 trong\t vi\u1ec7c\t x\u00e1c\t \u0111\u1ecbnh\t chuy\u1ec3n\t \u0111\u1ed9ng\t c\u1ee7a\t v\u1eadt\t th\u1ec3\t K,\t v\u00e0\t chuy\u1ec3n\t \u0111\u1ed9ng \u0111\u01b0\u1ee3c\t x\u00e1c\t \u0111\u1ecbnh\t th\u00f4ng\t qua\t m\u00f4i\t tr\u01b0\u1eddng\t m\u00e0\t K\t \u0111ang\t \u1edf\t trong\t \u0111\u00f3. Trong\t tr\u01b0\u1eddng\t h\u1ee3p\t \u0111\u00f3,\t ng\u01b0\u1eddi\t ta\t ph\u1ea3i\t thay\t th\u1ebf\t kh\u00f4ng\t gian\t tuy\u1ec7t \u0111\u1ed1i\t c\u1ee7a\t Newton\t b\u1eb1ng\t m\u00f4i\t tr\u01b0\u1eddng\t kia.\t Kh\u00f4ng\t nghi\t ng\u1edd\t Newton \u0111\u00e3\t kh\u00f4ng\t ngh\u0129\t \u0111\u1ebfn\t quan\t ni\u1ec7m\t n\u00e0y.\t H\u01a1n\t n\u1eefa,\t c\u00f3\t th\u1ec3\t d\u1ec5\t d\u00e0ng ch\u1ee9ng\t minh\t r\u1eb1ng\t b\u1ea7u\t kh\u00f4ng\t kh\u00ed\t kh\u00f4ng\t ph\u1ea3i\t l\u00e0\t m\u00f4i\t tr\u01b0\u1eddng\t x\u00e1c \u0111\u1ecbnh\t \u0111\u01b0\u1ee3c\t chuy\u1ec3n\t \u0111\u1ed9ng\t kia.\t Ch\u00fang\t ta\t do\t \u0111\u00f3\t ph\u1ea3i\t t\u01b0\u1edfng\t t\u01b0\u1ee3ng \u0111\u1ebfn\t m\u1ed9t\t m\u00f4i\t tr\u01b0\u1eddng\t kh\u00e1c,\t ch\u1eb3ng\t h\u1ea1n\t \u0111\u1ebfn\t m\u00f4i\t tr\u01b0\u1eddng\t l\u1ea5p\t \u0111\u1ea7y kh\u00f4ng\tgian\tm\u00e0\thi\u1ec7n\tt\u1ea1i\tch\u00fang\tta\tch\u01b0a\tc\u00f3\thi\u1ec3u\tbi\u1ebft\tth\u00edch\t\u0111\u00e1ng\tv\u1ec1 s\u1ef1\t c\u1ea5u\t t\u1ea1o\t v\u00e0\t c\u00e1c\t quan\t h\u1ec7\t v\u1eadn\t h\u00e0nh\t c\u1ee7a\t n\u00f3\t \u0111\u1ed1i\t v\u1edbi\t c\u00e1c\t v\u1eadt\t th\u1ec3 ch\u1ee9a\t trong\t \u0111\u00f3.\t Th\u1ef1c\t ra\t m\u1ed9t\t tr\u1ea1ng\t th\u00e1i\t s\u1ef1\t v\u1eadt\t nh\u01b0\t th\u1ebf\t t\u1ef1\t n\u00f3 kh\u00f4ng\t ph\u1ea3i\t l\u00e0\t kh\u00f4ng\t c\u00f3\t th\u1ec3.\t Nh\u1eefng\t nghi\u00ean\t c\u1ee9u\t th\u1ee7y\t \u0111\u1ed9ng\t l\u1ef1c h\u1ecdc\t m\u1edbi\t nh\u1ea5t\t cho\t th\u1ea5y,\t m\u1ed9t\t v\u1eadt\t th\u1ec3\t r\u1eafn\t trong\t m\u1ed9t\t ch\u1ea5t\t l\u1ecfng kh\u00f4ng\t ma\t s\u00e1t\t ch\u1ec9\t ch\u1ecbu\t m\u1ed9t\t s\u1ee9c\t c\u1ea3n\t khi\t v\u1eadn\t t\u1ed1c\t c\u1ee7a\t n\u00f3\t thay\t \u0111\u1ed5i th\u00f4i.\t Tuy\t k\u1ebft\t qu\u1ea3\t n\u00e0y\t \u0111\u01b0\u1ee3c\t suy\t ra\t m\u1ed9t\t c\u00e1ch\t l\u00fd\t thuy\u1ebft\t t\u1eeb\t kh\u00e1i ni\u1ec7m\t v\u1ec1\t qu\u00e1n\t t\u00ednh;\t nh\u01b0ng\t n\u00f3\t c\u00f3\t th\u1ec3\t \u0111\u01b0\u1ee3c\t xem\t nh\u01b0\t d\u1eef\t ki\u1ec7n\t s\u01a1 kh\u1edfi\t t\u1eeb\t \u0111\u00f3\t ch\u00fang\t ta\t c\u00f3\t th\u1ec3\t kh\u1edfi\t \u0111\u1ea7u.\t M\u1eb7c\t d\u00f9\t v\u1edbi\t kh\u00e1i\t ni\u1ec7m\t n\u00e0y ch\u00fang\t ta\t tr\u01b0\u1edbc\t ti\u00ean\t ch\u01b0a\t th\u1ec3\t l\u00e0m\t g\u00ec\t \u0111\u01b0\u1ee3c\t trong\t th\u1ef1c\t t\u1ebf,\t nh\u01b0ng ng\u01b0\u1eddi\tta\tc\u00f3\tth\u1ec3\thy\tv\u1ecdng\ts\u1ebd\thi\u1ec3u\tbi\u1ebft\tnhi\u1ec1u\th\u01a1n\tv\u1ec1\tm\u00f4i\ttr\u01b0\u1eddng\tgi\u1ea3 \u0111\u1ecbnh\tn\u00e0y\ttrong\tt\u01b0\u01a1ng\tlai;\tv\u00e0\tx\u00e9t\tv\u1ec1\tm\u1eb7t\tkhoa\th\u1ecdc,\tn\u00f3\tv\u1eabn\tc\u00f2n\tqu\u00fd h\u01a1n\t nhi\u1ec1u\t so\t v\u1edbi\t \u00fd\t t\u01b0\u1edfng\t tuy\u1ec7t\t v\u1ecdng\t v\u1ec1\t kh\u00f4ng\t gian\t tuy\u1ec7t\t \u0111\u1ed1i. N\u1ebfu\tch\u00fang\tta\tngh\u0129,\tch\u00fang\tta\tkh\u00f4ng\tth\u1ec3\tb\u1ecf\t\u0111i\tc\u00e1c\tv\u1eadt\tth\u1ec3\tc\u00f4\tl\u1eadp\tA, B,\tC,...,\tngh\u0129a\tl\u00e0\tch\u00fang\tta\tkh\u00f4ng\tth\u1ec3\tx\u00e1c\t\u0111\u1ecbnh\tb\u1eb1ng\tth\u00ed\tnghi\u1ec7m\t\u0111\u1ec3 bi\u1ebft\t xem\t vai\t tr\u00f2\t c\u1ee7a\t ch\u00fang\t l\u00e0\t ch\u00ednh\t y\u1ebfu\t hay\t th\u1ee9\t y\u1ebfu,\t r\u1eb1ng\t \u0111\u1ebfn nay\t ch\u00fang\t v\u1eabn\t l\u00e0\t ph\u01b0\u01a1ng\t ti\u1ec7n\t duy\t nh\u1ea5t\t v\u00e0\t c\u00f9ng\t \u0111\u1ea7y\t \u0111\u1ee7\t cho\t s\u1ef1 \u0111\u1ecbnh\t h\u01b0\u1edbng\t v\u1ec1\t c\u00e1c\t chuy\u1ec3n\t \u0111\u1ed9ng\t v\u00e0\t cho\t s\u1ef1\t m\u00f4\t t\u1ea3\t nh\u1eefng\t d\u1eef\t ki\u1ec7n c\u01a1\t h\u1ecdc,\t th\u00ec\t c\u00f3\t l\u1ebd\t ch\u00fang\t ta\t h\u00e3y\t n\u00ean\t xem\t t\u1ea5t\t c\u1ea3\t c\u00e1c\t chuy\u1ec3n\t \u0111\u1ed9ng","nh\u01b0\t\u0111\u01b0\u1ee3c\tx\u00e1c\t\u0111\u1ecbnh\tb\u1edfi\tnh\u1eefng\tv\u1eadt\tth\u1ec3\tn\u00e0y. 5.\tB\u00e2y\tgi\u1edd\tch\u00fang\tta\th\u00e3y\txem\tm\u1ed9t\t\u0111i\u1ec3m\tm\u00e0\tNewton\td\u01b0\u1eddng\tnh\u01b0 r\u1ea5t\t c\u00f3\t l\u00fd\t trong\t vi\u1ec7c\t ph\u00e2n\t bi\u1ec7t\t gi\u1eefa\t chuy\u1ec3n\t \u0111\u1ed9ng\t t\u01b0\u01a1ng\t \u0111\u1ed1i\t v\u00e0 tuy\u1ec7t\t\u0111\u1ed1i.\tN\u1ebfu\tqu\u1ea3\t\u0111\u1ea5t\tc\u00f3\tm\u1ed9t\tchuy\u1ec3n\t\u0111\u1ed9ng\ttuy\u1ec7t\t\u0111\u1ed1i\txung\tquanh tr\u1ee5c\tc\u1ee7a\tn\u00f3,\tth\u00ec\ts\u1ebd\tc\u00f3\tc\u00e1c\tl\u1ef1c\tly\tt\u00e2m\tph\u00e1t\tsinh\ttr\u00ean\tqu\u1ea3\t\u0111\u1ea5t;\tn\u00f3\ts\u1ebd b\u1ecb\td\u1eb9t\t\u0111i,\tgia\tt\u1ed1c\tc\u1ee7a\tl\u1ef1c\th\u1ea5p\td\u1eabn\tb\u1ecb\tgi\u1ea3m\t\u0111i\t\u1edf\tx\u00edch\t\u0111\u1ea1o,\tm\u1eb7t\tph\u1eb3ng c\u1ee7a\tcon\tl\u1eafc\tFoucault\ts\u1ebd\tb\u1ecb\tquay,\tv.v.\tT\u1ea5t\tc\u1ea3\tnh\u1eefng\thi\u1ec7n\tt\u01b0\u1ee3ng\tn\u00e0y s\u1ebd\t bi\u1ebfn\t m\u1ea5t\t khi\t qu\u1ea3\t \u0111\u1ea5t\t \u0111\u1ee9ng\t y\u00ean\t v\u00e0\t c\u00e1c\t thi\u00ean\t th\u1ec3\t c\u00f2n\t l\u1ea1i\t quay tuy\u1ec7t\t \u0111\u1ed1i\t xung\t quanh\t n\u00f3,\t \u0111\u1ec3\t sao\t cho\t c\u00f9ng\t m\u1ed9t\t chuy\u1ec3n\t \u0111\u1ed9ng quay\t t\u01b0\u01a1ng\t \u0111\u1ed1i\t h\u00ecnh\t th\u00e0nh.\t \u0110\u00f3\t th\u1ef1c\t ra\t ch\u00ednh\t l\u00e0\t tr\u01b0\u1eddng\t h\u1ee3p,\t n\u1ebfu ch\u00fang\t ta\t ngay\t t\u1eeb\t \u0111\u1ea7u\t xu\u1ea5t\t ph\u00e1t\t t\u1eeb\t quan\t ni\u1ec7m\t c\u1ee7a\t m\u1ed9t\t kh\u00f4ng gian\ttuy\u1ec7t\t\u0111\u1ed1i.\tNh\u01b0ng\tn\u1ebfu\tch\u00fang\tta\tv\u1eabn\t\u0111\u1ee9ng\ttr\u00ean\tmi\u1ebfng\t\u0111\u1ea5t\tc\u1ee7a 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gi\u1edbi\tkh\u00f4ng\tph\u1ea3i\t\u0111\u01b0\u1ee3c\tcho\tta\thai\tl\u1ea7n,\tv\u1edbi\tqu\u1ea3\t\u0111\u1ea5t\t\u0111\u1ee9ng\ty\u00ean\tv\u00e0\tqu\u1ea3 \u0111\u1ea5t\t chuy\u1ec3n\t \u0111\u1ed9ng\t quay;\t nh\u01b0ng\t ch\u1ec9\t \u0111\u01b0\u1ee3c\t cho\t m\u1ed9t\tl\u1ea7n,\t v\u1edbi\t nh\u1eefng chuy\u1ec3n\t\u0111\u1ed9ng\tt\u01b0\u01a1ng\t\u0111\u1ed1i\tduy\tnh\u1ea5t\tc\u1ee7a\tn\u00f3\tc\u00f3\tth\u1ec3\tx\u00e1c\t\u0111\u1ecbnh\t\u0111\u01b0\u1ee3c.\tDo \u0111\u00f3\t ch\u00fang\t ta\t kh\u00f4ng\t th\u1ec3\t n\u00f3i,\t s\u1ef1\t v\u1eadt\t s\u1ebd\t ra\t sao\t n\u1ebfu\t nh\u01b0\t qu\u1ea3\t \u0111\u1ea5t kh\u00f4ng\tquay.\tCh\u00fang\tta\tc\u00f3\tth\u1ec3\tl\u00fd\tgi\u1ea3i\tm\u1ed9t\ttr\u01b0\u1eddng\th\u1ee3p\t\u0111\u00e3\t\u0111\u01b0\u1ee3c\tcho ta,\t nh\u01b0ng\t theo\t nhi\u1ec1u\t c\u00e1ch\t kh\u00e1c\t nhau.\t Tuy\t nhi\u00ean,\t n\u1ebfu\t ch\u00fang\t ta 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Bi\u1ec3u\tth\u1ee9c\tn\u00e0y,\tbao\tl\u00e2u\tc\u00f3\t\u0111\u1ee7\tc\u00e1c\tv\u1eadt\tth\u1ec3\txem\tra\tc\u1ed1\t\u0111\u1ecbnh\ttrong kh\u00f4ng\t gian,\t s\u1ebd\t ho\u00e0n\t t\u1ea5t\t nh\u1eefng\t nhi\u1ec7m\t v\u1ee5\t nh\u01b0\t bi\u1ec3u\t th\u1ee9c\t th\u00f4ng th\u01b0\u1eddng.\tN\u00f3\tc\u0169ng\td\u1ec5\ts\u1eed\td\u1ee5ng,\tv\u00e0\tc\u0169ng\tg\u1eb7p\tph\u1ea3i\tnh\u1eefng\tkh\u00f3\tkh\u0103n nh\u01b0\t nhau.\t Trong\t tr\u01b0\u1eddng\t h\u1ee3p\t n\u00e0y,\t ch\u00fang\t ta\t kh\u00f4ng\t th\u1ec3\t t\u00ecm\t th\u1ea5y kh\u00f4ng\t gian\t tuy\u1ec7t\t \u0111\u1ed1i,\t trong\t tr\u01b0\u1eddng\t h\u1ee3p\t kia,\t ch\u1ec9\t c\u00f3\t m\u1ed9t\t s\u1ed1\t gi\u1edbi h\u1ea1n\tkh\u1ed1i\tl\u01b0\u1ee3ng\tn\u1eb1m\ttrong\tt\u1ea7m\thi\u1ec3u\tbi\u1ebft\tch\u00fang\tta,\tv\u00e0\tdo\t\u0111\u00f3\tph\u00e9p c\u1ed9ng\t \u0111\u01b0\u1ee3c\t g\u1ee3i\t \u00fd\t kh\u00f4ng\t th\u1ec3\t th\u1ef1c\t hi\u1ec7n\t \u0111\u01b0\u1ee3c\t \u0111\u1ea7y\t \u0111\u1ee7.\t Th\u1eadt\t kh\u00f4ng th\u1ec3\t n\u00f3i\t \u0111\u01b0\u1ee3c\t r\u1eb1ng\t bi\u1ec3u\t th\u1ee9c\t m\u1edbi\t v\u1eabn\t c\u00f2n\t bi\u1ec3u\t th\u1ecb\t t\u00ecnh\t hu\u1ed1ng \u0111\u00fang\t th\u1eadt\t c\u1ee7a\t c\u00e1c\t s\u1ef1\t v\u1eadt\t hay\t kh\u00f4ng,\t n\u1ebfu\t c\u00e1c\t sao\t chuy\u1ec3n\t \u0111\u1ed9ng h\u1ed7n\t\u0111\u1ed9n.\tC\u00e1c\tkinh\tnghi\u1ec7m\tc\u00f3\tt\u00ednh\tt\u1ed5ng\tqu\u00e1t\th\u01a1n\tkh\u00f4ng\tth\u1ec3\t\u0111\u01b0\u1ee3c","ki\u1ebfn\tt\u1ea1o\tt\u1eeb\tkinh\tnghi\u1ec7m\t\u0111\u1eb7c\tbi\u1ec7t\th\u01a1n\tm\u00e0\tch\u00fang\tta\t\u0111ang\tc\u00f3.\tNg\u01b0\u1ee3c l\u1ea1i\t ch\u00fang\t ta\t ph\u1ea3i\t ch\u1edd\t \u0111\u1ee3i\t m\u1ed9t\t kinh\t nghi\u1ec7m\t nh\u01b0\t th\u1ebf\t xu\u1ea5t\t hi\u1ec7n. Kinh\tnghi\u1ec7m\tn\u00e0y\tc\u00f3\tth\u1ec3\t\u0111\u01b0\u1ee3c\tch\u1edd\t\u0111\u1ee3i\tc\u00f3\tl\u1ebd\tt\u1eeb\tm\u1ed9t\ts\u1ef1\tn\u1edbi\tr\u1ed9ng\tc\u00e1c ki\u1ebfn\t th\u1ee9c\t thi\u00ean\t v\u0103n-v\u1eadt\t l\u00fd\t c\u1ee7a\t ch\u00fang\t ta\t \u1edf\t \u0111\u00e2u\t \u0111\u00f3\t trong\t kh\u00f4ng gian\tc\u1ee7a\tv\u0169\ttr\u1ee5,\tn\u01a1i\tdi\u1ec5n\tra\tc\u00e1c\tchuy\u1ec3n\t\u0111\u1ed9ng\td\u1eef\td\u1ed9i\th\u01a1n\tv\u00e0\tph\u1ee9c t\u1ea1p\t h\u01a1n\t so\t v\u1edbi\t v\u00f9ng\t l\u00e2n\t c\u1eadn\t c\u1ee7a\t ch\u00fang\t ta.\t Tuy\t nhi\u00ean\t k\u1ebft\t qu\u1ea3 quan\ttr\u1ecdng\tnh\u1ea5t\tc\u1ee7a\tc\u00e1c\tkh\u1ea3o\ts\u00e1t\tc\u1ee7a\tch\u00fang\tta\tl\u00e0,\tch\u00ednh\tc\u00e1c\t\u0111\u1ecbnh lu\u1eadt\tc\u01a1\th\u1ecdc\txem\tra\t\u0111\u01a1n\tgi\u1ea3n\tnh\u1ea5t\tl\u1ea1i\tc\u00f3\tb\u1ea3n\tch\u1ea5t\tr\u1ea5t\tph\u1ee9c\tt\u1ea1p,\tr\u1eb1ng ch\u00fang\t d\u1ef1a\t tr\u00ean\t nh\u1eefng\t kinh\t nghi\u1ec7m\t ch\u01b0a\t k\u1ebft\t th\u00fac,\t v\u00e2ng\t ngay\t c\u1ea3 kh\u00f4ng\t bao\t gi\u1edd\t c\u00f3\t th\u1ec3\t k\u1ebft\t th\u00fac\t tr\u1ecdn\t v\u1eb9n\t \u0111\u01b0\u1ee3c,\t r\u1eb1ng\t ch\u00fang\t tuy\t \u0111\u01b0\u1ee3c b\u1ea3o\t \u0111\u1ea3m\t ch\u1eafc\t ch\u1eafn\t trong\t th\u1ef1c\t ti\u1ec5n,\t \u0111\u1ee7\t \u0111\u1ec3\t l\u00e0m\t c\u01a1\t s\u1edf\t c\u1ee7a\t di\u1ec5n\t d\u1ecbch to\u00e1n\t h\u1ecdc\t n\u1ebfu\t x\u00e9t\t t\u00ednh\t \u1ed5n\t \u0111\u1ecbnh\t th\u1ecfa\t \u0111\u00e1ng\t c\u1ee7a\t m\u00f4i\t tr\u01b0\u1eddng\t ch\u00fang\t ta, r\u1eb1ng\t tuy\t nhi\u00ean\t ch\u00fang\t kh\u00f4ng\t th\u1ec3\t \u0111\u01b0\u1ee3c\t ph\u00e9p\t xem\t l\u00e0\t nh\u1eefng\t ch\u00e2n\t l\u00fd \u0111\u01b0\u1ee3c\t thi\u1ebft\t l\u1eadp\t b\u1eb1ng\t to\u00e1n\t h\u1ecdc,\t m\u00e0\t \u0111\u00fang\t h\u01a1n\t ch\u1ec9\t l\u00e0\t nh\u1eefng\t \u0111\u1ecbnh\t l\u00fd, kh\u00f4ng\t ph\u1ea3i\t ch\u1ec9\t c\u00f3\t kh\u1ea3\t n\u0103ng\t ch\u1ecbu\t m\u1ed9t\t s\u1ef1\t ki\u1ec3m\t tra\t li\u00ean\t t\u1ee5c\t c\u1ee7a\t kinh nghi\u1ec7m,\tm\u00e0\tth\u1ef1c\ts\u1ef1\tc\u00f2n\tc\u1ea7n\tph\u1ea3i\t\u0111\u01b0\u1ee3c\tnh\u01b0\tth\u1ebf.","T\u01af\tLI\u1ec6U\tTHAM\tKH\u1ea2O 1.\t Aichelburg\t &\t Sexl,\t Einstein.\t Sein\t Einfluss\t auf\t Physik. Philosophic\tund\tPolitik.\tViecweg,\t1979. 2.\tCassidy,\tDavid\tc.,\tEinstein\tand\tOur\tWorld.\tHumanity\tBooks, 2nd\tedition,\t2004. 3.\t Einstein,\t Albert,\t \u00dcber\t die\t spezielle\t and\t die\t allgemeine Relativit\u04d3tstheorie\t (allgemeinverst\u04d3ndlich),\t in\t l\u1ea7n\t th\u1ee9\t hai\t m\u01b0\u01a1i hai.\t Vieweg,\t 1972.\t Th\u00eam\t ban\t d\u1ecbch\t ti\u1ebfng\t Anh:\t Relativity\t -\t The Special\t and\t the\t General\t Theory:\t A\t Popular\t Exposition\t by\t A. Einstein.\t Authorized\t translation\t by\t Robert\t W.\t Lawson.\t Crown Publishers,\tInc.,\tNY,\tUSA,\t1961. 4.\t Einstein,\t Albert,\t Ideas\t and\t Opinions.\t Wings\t Books,\t New York. 5.\tEinstein,\tAlbert,\tMein\tWelthild.\tUllstcin\tMaterialien,\t1981. 6.\tEinstein,\tAlbert,\tAus\tMeinen\tSp\u04d3ten\tJahren.\tDVA,\t1979. 7.\tEinstein,\tAlbert,\tSpecial\tand\tGeneral\tTheory.\tIntroduction\tby Roger\t Penrose.\t Commentary\t by\t Robert\t Gcroch.\t A\t Plume\t Book, 2005. 8.\t Friedman,\t Jerome\t I.,\t Con\t \u0111\u01b0\u1eddng\t d\u1eabn\t \u0111\u1ebfn\t gi\u1ea3i\t Nobel,\t trong \\\"Max\t Planck\t -\t Ng\u01b0\u1eddi\t khai\t s\u00e1ng\t thuy\u1ebft\t l\u01b0\u1ee3ng\t t\u1eed.\t K\u1ef7\t y\u1ebfu\t m\u1eebng sinh\tnh\u1eadt\tth\u1ee9\t150\\\".\tNxb.\tTri\tTh\u1ee9c,\t2008. 9.\t Goenner,\t Hubert,\t Einsteins\t Relativit\u04d3tstheorien.\t Raum,\t Zeit, Masse,\tGravitation.\tBeck\u2019sche\tReihe,\t1997. 10.\t Hawking,\t Stephen\t (Ed.\t with\t commentary),\t A\t Stubornly Persistent\tIllusion.\tRunning\tPress\tBook\tPublishers,\t2007. 11.\t Heisenberg,\t Wemer,\t Tradition\t in\t der\t Wissenschaft.\t Piper, 1977. 12.\t Hoffmann,\t Banesh,\t Einsteins\t Ideen.\t Das\t Relativil\u04d3tsprinzip und\t seine\t historischen\t Wurzeln\t (Relativity\t and\t Its\t Roots). Spektrum\tAkadcmischer\tVerlag,\t1983. 13.\t Holton,\t Gerald,\t Thematic\t Origins\t of\t Scientific\t Thought:","Kepler\tto\tEinstein.\tHarvard\tUniversity\tPress\t1973. 14.\t Johnson,\t Paul,\t Modem\t Times.\t The\t World\t from\t the\t Twenties to\tthe\tNineties.\tHarperperennial,\t1992. 15.\t Kant,\t Immanuel,\t Prolegomena\t zu\t einer\t jeden\t k\u016bnftigen Metaphysik,\t die\t als\t Wissenschaft\t wird\t auftreten\t k\u04e7nnen. Philosophische\tBibliothek,\tBand\t40,\t1920. 16.\tKant,\tImmanuel:\tKritik\tder\tReinen\tVemunft.\tHrsg\tTheodor Valentiner,\tQuy\u1ec3n\t2,\tin\tl\u1ea7n\tth\u1ee9\tm\u01b0\u1eddi\thai;\t[373],\t40.\tFelix\tMeiner 1922. 17.\tLicbcr,\tLillian\tR.,\tThe\tEinstein\tTheory\tof\tRelativity:\tA\tTrip\tto the\tFourth\tDimension.\tPaul\tDry\tBooks,\t2008. 18.\tMach.\tErnst,\tDie\tMechanik\tin\tihrer\tEntwickelung:\tHistorisch- kritisch\t dargestellt.\t Wissenschaftliche\t Buchgesellschaft Darmstadt,\t1982. 19.\t Newton,\t Isaac,\t Mathematische\t Prinzipien\t der\t Naturlehre, vi\u1ebft\t t\u1eaft\t l\u00e0\t Principia\t (b\u1ea3n\t ti\u1ebfng\t \u0110\u1ee9c).\t Wissenschaftliche Buchgesellschaft\tDarmstadt,\t1963. 20.\t Nguy\u1ec5n\t Xu\u00e2n\t Xanh,\t EINSTEIN,\t in\t l\u1ea7n\t th\u1ee9\t 9.\t Nxb.\t Th\u00e0nh ph\u1ed1\tH\u1ed3\tCh\u1ec9\tMinh,\t2011. 21.\tPoincar\u00e9,\tHenri,\tLa\tValeur\tde\tla\tScience.\tB\u1ea3n\tti\u1ebfng\t\u0110\u1ee9c\t\\\"\tDer Wert\tder\tWissenschaft\t\\\".\tTeubner,\t1910. 22.\tRandall,\tJohn\tH.\tJr,\tThe\tMaking\tof\tthe\tModem\tMind.\tWith\ta Forword\tby\tJacques\tBarzun.\tColumbia\tUniversity\tPress,\t1976. 23.\tRobinson,\tAndrew,\tEinstein.\tA\tHundred\tYears\tof\tRelativity. Harry\tN.\tAbrams,\tInc.,\tPublishers,\t2005. 24.\t Roos,\t Hans;\t Hermann,\t Armin\t (ed.),\t Max\t Planck.\t Vortr\u04d3ge. Reden.\tErinnerungen.\tSpringer\t2001. 25.\t Schilpp,\t Paul\t A.\t (cd.),\t Albert\t Einstein\t als\t Philosoph\t and Naturforscher.\tVieweg,\t1979. 26.\tSchwinger,\tJulian,\tEinsteins\tErbe.\tDie\tEinheit\tvon\tRaum\tand Zeit.\tSpektrum\tder\tWissenschaft,\t2000. 27.\t Steiner,\t Frank\t (ed.),\t Albert\t Einstein.\t Genie,\t Vision\u04d3r\t and Legende.\tSpriner,\t2005.","28.\t Weyl,\t Hermann,\t Raum-Zeit-Materie.\t Vorlesungen\t \u016bber Allgemeine\t Relativit\u04d3tstheorie.\t Wissenschaftliche Buchgesellschaft\tDarmstadt,\t1961. 29.\tWilliams,\tPearce,\tRelativity\tTheory:\tIts\tOrigins\t&\tImpact\tOn Modern\tThought.\tJohn\tWiley\t&\tSons,\t1968. o0o","CH\u00da\tTH\u00cdCH","[1]\tCh\u1eef\t\\\"h\u1eb9p\\\"\thay\t\\\"r\u1ed9ng\\\"\t\u1edf\t\u0111\u00e2y\tc\u00f3\tngh\u0129a\tl\u00e0\t\\\"\u0111\u1eb7c\tbi\u1ec7t\\\"\t(special),\thay\t\\\"t\u1ed5ng\tqu\u00e1t\\\" (general).\t Thuy\u1ebft\t t\u01b0\u01a1ng\t \u0111\u1ed1i\t h\u1eb9p\t l\u00e0\t tr\u01b0\u1eddng\t h\u1ee3p\t kh\u00f4ng\t c\u00f3\t l\u1ef1c\t d\u1eabn\t (gravitation), trong\tkhi\tthuy\u1ebft\tt\u01b0\u01a1ng\t\u0111\u1ed1i\tr\u1ed9ng\tl\u00e0\tc\u00f3.","[2]\t B\u1ea3n\t ti\u1ebfng\t Vi\u1ec7t\t \u0111\u01b0\u1ee3c\t d\u1ef1a\t tr\u00ean\t b\u00e1n\t g\u1ed1c\t ti\u1ebfng\t \u0110\u1ee9c\t c\u1ee7a\t Einstein\t v\u00e0\t b\u1ea3n\t d\u1ecbch ti\u1ebfng\t Anh\t c\u1ee7a\t Robert\t W.\t Lawson\t \u0111\u01b0\u1ee3c\t Einstein\t \u1ee7y\t quy\u1ec1n.\t B\u1ea3n\t ti\u1ebfng\t Anh\t h\u1eefu \u00edch\tnh\u01b0ng\tc\u00f3\tm\u1ed9t\ts\u1ed1\tl\u1ed7i,\tv\u00e0\tnh\u1eefng\tl\u1ed7i\tn\u00e0y\tc\u1ee9\tti\u1ebfp\tt\u1ee5c\tl\u1eadp\tl\u1ea1i\tnguy\u00ean\tv\u0103n\t\u1edf\tt\u1ea5t\tc\u1ea3 nh\u1eefng\tl\u1ea7n\txu\u1ea5t\tb\u1ea3n\td\u1ef1a\ttr\u00ean\tb\u1ea3n\td\u1ecbch\tc\u1ee7a\tLawson\tm\u00e0\tkh\u00f4ng\th\u1ec1\tc\u00f3\ts\u1ef1\tki\u1ec3m\ttra.","[3]\tEinstein\tdi\u1ec5n\tt\u1ea3\ttrong\tb\u1ea3n\tg\u1ed1c:\t(2\u2019).\t\\\"M\u1ed7i\ttia\ts\u00e1ng\tchuy\u1ec3n\t\u0111\u1ed9ng\ttrong\tm\u1ed9t h\u1ec7\tt\u1ecda\t\u0111\u1ed9\t\\\"y\u00ean\tt\u0129nh\\\"\tv\u1edbi\tv\u1eadn\tt\u1ed1c\tnh\u1ea5t\t\u0111\u1ecbnh\tc,\t\u0111\u1ed9c\tl\u1eadp\tv\u1edbi\tvi\u1ec7c\ttia\ts\u00e1ng\t\u0111\u01b0\u1ee3c\tph\u00e1t ra\tb\u1edfi\tm\u1ed9t\tv\u1eadt\tth\u1ec3\t\u0111\u1ee9ng\ty\u00ean\thay\tchuy\u1ec3n\t\u0111\u1ed9ng.\tStephen\tHawking\tdi\u1ec5n\tt\u1ea3\tg\u1ed9p\tl\u1ea1i trong\tL\u01b0\u1ee3c\ts\u1eed\tth\u1eddi\tgian\ttheo\tc\u00e1ch\tn\u00e0y:\t\\\"Einstein\tb\u1eaft\t\u0111\u1ea7u\tt\u1eeb\t\u0111\u1ecbnh\t\u0111\u1ec1\tr\u1eb1ng\tc\u00e1c\t\u0111\u1ecbnh lu\u1eadt\tc\u1ee7a\tkhoa\th\u1ecdc\thi\u1ec7n\tra\tgi\u1ed1ng\tnhau\t\u0111\u1ed1i\tv\u1edbi\tc\u00e1c\tquan\ts\u00e1t\tvi\u00ean\tchuy\u1ec3n\t\u0111\u1ed9ng\tt\u1ef1 do.\t \u0110\u1eb7c\t bi\u1ec7t,\t h\u1ecd\t \u0111o\t c\u00f9ng\t m\u1ed9t\t v\u1eadn\t t\u1ed1c\t \u00e1nh\t s\u00e1ng,\t d\u00f9\t h\u1ecd\t chuy\u1ec3n\t \u0111\u1ed9ng\t nhanh\t th\u1ebf n\u00e0o.\\\"","[4]\t N\u1ebfu\t ng\u01b0\u1eddi\t ta\t mu\u1ed1n\t t\u00ednh\t c\u1ee5\t th\u1ec3,\t nh\u01b0\t ch\u1eb3ng\t h\u1ea1n\t \u0111\u1ec3\t bi\u1ebft\t m\u1ed9t\t h\u00e0nh\t tinh chuy\u1ec3n\t \u0111\u1ed9ng\t xung\t quanh\t m\u1eb7t\t tr\u1eddi\t th\u1ebf\t n\u00e0o,\t hay\t m\u1ed9t\t qu\u1ea3\t t\u00e1o\t r\u01a1i\t th\u1ebf\t n\u00e0o,\t ng\u01b0\u1eddi ta\tph\u1ea3i\tgi\u1ea3i\tc\u00e1c\tph\u01b0\u01a1ng\ttr\u00ecnh\ttr\u01b0\u1eddng\td\u01b0\u1edbi\tnh\u1eefng\t\u0111i\u1ec1u\tki\u1ec7n\tbi\u00ean\tv\u1eadt\tl\u00fd\t\u0111\u01b0\u1ee3c\tbi\u1ebft. \u0110i\u1ec1u\tn\u00e0y\t\u0111\u00f4i\tkhi\ts\u1ebd\tc\u1ef1c\tk\u1ef3\tkh\u00f3\tkh\u0103n.","[5]\tProlegomena\t l\u00e0\t m\u1ed9t\t t\u00e1c\t ph\u1ea9m\t c\u1ee7a\t Immanuel\t Kant\t c\u00f3\t ngh\u0129a\t nh\u01b0\t m\u1ed9t\t S\u01a1 lu\u1eadn\td\u00e0nh\tcho\tm\u1ed7i\tm\u1ed9t\tm\u00f4n\tSi\u00eau\th\u00ecnh\th\u1ecdc\tt\u01b0\u01a1ng\tlai,\ttrong\t\u0111\u00f3,\tKant\tc\u00f3\tlu\u1eadn\tb\u00e0n v\u1ec1\tth\u1eddi\tgian\tv\u00e0\tkh\u00f4ng\tgian.","[6]\t Einstein\t g\u1ecdi\t Kant\t \u1edf\t \u0111\u00e2y\t l\u00e0\t \\\"Kerl\\\",\t ti\u1ebfng\t Anh\t l\u00e0\t \\\"guy\\\",\t m\u1ed9t\t c\u00e1ch\t th\u00e2n\t m\u1eadt. Tuy\t nhi\u00ean,\t Kerl\t hay\t Guy\t t\u1ef1\t n\u00f3\t c\u00f2n\t c\u00f3\t ngh\u0129a\t kh\u00f4ng\t \u0111\u01b0\u1ee3c\t k\u00ednh\t tr\u1ecdng\t l\u1eafm.\t Guy \u0111\u01b0\u1ee3c\td\u00f9ng\tph\u1ed5\tbi\u1ebfn\ttrong\tv\u0103n\th\u00f3a\tM\u1ef9\th\u01a1n\tKerl\ttrong\tv\u0103n\th\u00f3a\t\u0110\u1ee9c.","[7]\tB\u00e0i\tn\u00e0y\t\u0111\u01b0\u1ee3c\td\u1ecbch\tv\u00e0\t\u0111\u0103ng\tl\u1ea1i\ttrong\tph\u1ea7n\tT\u01b0\tli\u1ec7u\tl\u1ecbch\ts\u1eed\td\u01b0\u1edbi\tti\u00eau\t\u0111\u1ec1\tThuy\u1ebft t\u01b0\u01a1ng\t\u0111\u1ed1i\tl\u00e0\tg\u00ec?\t(ND).","[8]\t Nguy\u1ec5n\t Xu\u00e2n\t Xanh,\t Nxb.\t T\u1ed5ng\t h\u1ee3p\t Th\u00e0nh\t ph\u1ed1\t H\u1ed3\t Ch\u00ed\t Minh,\t n\u0103m\t 2007, t\u00e1i\tb\u1ea3n\tn\u0103m\t2011.","[9]\ttrue;\twahr\t(ND).","[10]\treal\t(ND).","[11]\tpractically\trigid;\tpraktisch\tStarr\t(ND).","[12]\tdistance\t(line-interval);\tStrecke\t(ND).","[13]\t B\u1eb1ng\t c\u00e1ch\t \u0111\u00f3,\t m\u1ed9t\t v\u1eadt\t th\u1ec3\t t\u1ef1\t nhi\u00ean\t \u0111\u01b0\u1ee3c\t li\u00ean\t k\u1ebft\t v\u1edbi\t m\u1ed9t\t \u0111\u01b0\u1eddng\t th\u1eb3ng. Ba\t\u0111i\u1ec3m\tA,\tB,\tC\tc\u1ee7a\tm\u1ed9t\tv\u1eadt\tth\u1ec3\tr\u1eafn\t\u0111\u01b0\u1ee3c\txem\tl\u00e0\tn\u1eb1m\ttr\u00ean\tm\u1ed9t\t\u0111\u01b0\u1eddng\tth\u1eb3ng\tkhi, v\u1edbi\t c\u00e1c\t \u0111i\u1ec3m\t A\t v\u00e0\t C\t cho\t tr\u01b0\u1edbc,\t \u0111i\u1ec3m\t B\t \u0111\u01b0\u1ee3c\t ch\u1ecdn\t sao\t cho\t t\u1ed5ng\t s\u1ed1\t c\u00e1c\t kho\u1ea3ng c\u00e1ch\tAB\tv\u00e0\tBC\tnh\u1ecf\tnh\u1ea5t\tnh\u01b0\tc\u00f3\tth\u1ec3.\tS\u1ef1\tg\u1ee3i\t\u00fd\tkh\u00f4ng\t\u0111\u1ea7y\t\u0111\u1ee7\tn\u00e0y\ttuy\tnhi\u00ean\tc\u00f3\tth\u1ec3 \u0111\u1ee7\tcho\tm\u1ee5c\t\u0111\u00edch\tc\u1ee7a\tch\u00fang\tta\thi\u1ec7n\tt\u1ea1i.","[14]\t14\tconstruction\t(ND).","[15]\t \u1ede\t \u0111\u00e2y\t ng\u01b0\u1eddi\t ta\t \u0111\u00e3\t gi\u1ea3\t thi\u1ebft\t r\u1eb1ng\t kh\u00f4ng\t c\u00f3\t g\u00ec\t c\u00f2n\t th\u1eeba\t l\u1ea1i,\t ngh\u0129a\t l\u00e0\t ph\u00e9p \u0111\u00f3\t cho\t ra\t m\u1ed9t\t k\u1ebft\t qu\u1ea3\t s\u1ed1\t nguy\u00ean.\t Ng\u01b0\u1eddi\t ta\t tho\u00e1t\t kh\u1ecfi\t kh\u00f3\t kh\u0103n\t n\u00e0y\t b\u1eb1ng\t c\u00e1ch s\u1eed\t d\u1ee5ng\t c\u00e1c\t thanh\t \u0111o\t \u0111\u01b0\u1ee3c\t chia\t nh\u1ecf\t ra\t m\u00e0\t vi\u1ec7c\t \u0111\u01b0a\t v\u00e0o\t s\u1eed\t d\u1ee5ng\t v\u1ec1\t c\u0103n\t b\u1ea3n kh\u00f4ng\t\u0111\u00f2i\th\u1ecfi\tm\u1ed9t\tph\u01b0\u01a1ng\tph\u00e1p\tm\u1edbi\tn\u00e0o\tc\u00f3.","[16]\tevent;\tEreignis\t(ND).","[17]\t place\t specification;\t Ortsangabe.\t C\u00f9ng\t c\u00f3\t ngh\u0129a\t l\u00e0\t x\u00e1c\t \u0111\u1ecbnh\t v\u1ecb\t tr\u00ed,\t hay th\u00f4ng\ttin\t(ND).","[18]\tNguy\u00ean\tb\u1ea3n:\t\\\"Qu\u1ea3ng\ttr\u01b0\u1eddng\tPotsdam\tt\u1ea1i\tBerlin\\\"\t(ND).","[19]\t M\u1ed9t\t s\u1ef1\t xem\t x\u00e9t\t ti\u1ebfp\t v\u1ec1\t \u00fd\t ngh\u0129a\t c\u1ee7a\t \\\"s\u1ef1\t tr\u00f9ng\t kh\u1edbp\t v\u1ec1\t kh\u00f4ng\t gian\\\"\t l\u00e0 kh\u00f4ng\t c\u1ea7n\t thi\u1ebft\t \u1edf\t \u0111\u00e2y.\t B\u1edfi\t v\u00ec\t kh\u00e1i\t ni\u1ec7m\t n\u00e0y\t \u0111\u1ee7\t r\u00f5,\t \u0111\u1ec3\t b\u1ea3o\t \u0111\u1ea3m\t s\u1ef1\t kh\u00e1c\t bi\u1ec7t\t \u00fd ki\u1ebfn,\tr\u1eb1ng\tn\u00f3\tc\u00f3\t\u0111\u00fang\thay\tkh\u00f4ng,\th\u1ea7u\tnh\u01b0\tkh\u00f4ng\tx\u1ea3y\tra\ttrong\ttr\u01b0\u1eddng\th\u1ee3p\t\u1ee9ng d\u1ee5ng\tc\u1ee5\tth\u1ec3.","[20]\t M\u1ed9t\t s\u1ef1\t \u0111\u00e0o\t s\u00e2u\t v\u00e0\t tu\t ch\u1ec9nh\t c\u00e1c\t quan\t ni\u1ec7m\t n\u00e0y\t l\u00e0\t c\u1ea7n\t thi\u1ebft\t trong\t ph\u1ea7n th\u1ee9\thai\tc\u1ee7a\tquy\u1ec3n\ts\u00e1ch\tkhi\tb\u00e0n\tv\u1ec1\tthuy\u1ebft\tt\u01b0\u01a1ng\t\u0111\u1ed1i\tr\u1ed9ng.","[21]\t\u0110\u00f3\tl\u00e0\tm\u1ed9t\t\u0111\u01b0\u1eddng\tcong\t(curve)\tm\u00e0\tv\u1eadt\tth\u1ec3\tchuy\u1ec3n\t\u0111\u1ed9ng\ttr\u00ean\t\u0111\u00f3.","[22]\t\u0110\u1ebf\tkh\u1ecfi\tch\u1ecbu\t\u1ea3nh\th\u01b0\u1edfng\th\u1ea5p\td\u1eabn\tc\u1ee7a\tch\u00fang\t(ND).","[23]\tCh\u00fang\tta\thi\u1ec3u\ts\u00e9t\tv\u1edbi\tch\u1edbp\tl\u00e0\tm\u1ed9t\t(ND).","[24]\tstatement;\tAussage.\tC\u00f2n\tc\u00f3\tngh\u0129a\tl\u00e0\tph\u00e1t\tbi\u1ec3u\t(ND).","[25]\tsupposition;\tVoraussetzung\t(ND).","[26]\thypothesis;\tHypothose\t(ND).","[27]\tstipulation;\tFeslsetzung\t(ND).","[28]\tCh\u00fang\tta\tgi\u1ea3\tthi\u1ebft\tti\u1ebfp,\tn\u1ebfu\tba\ts\u1ef1\tki\u1ec7n\tA,\tB,\tC\tx\u1ea3y\tra\tt\u1ea1i\tnh\u1eefng\tv\u1ecb\ttr\u00ed\tkh\u00e1c nhau\t sao\t cho\t n\u1ebfu\t A\t \u0111\u1ed3ng\t th\u1eddi\t v\u1edbi\t B\t v\u00e0\t B\t \u0111\u1ed3ng\t th\u1eddi\t v\u1edbi\t C\t (\u0111\u1ed3ng\t th\u1eddi\t theo\t ngh\u0129a c\u1ee7a\t\u0111\u1ecbnh\tngh\u0129a\ttr\u00ean)\tth\u00ec\tti\u00eau\tchu\u1ea9n\tc\u1ee7a\tt\u00ednh\t\u0111\u1ed3ng\tth\u1eddi\tc\u0169ng\t\u0111\u01b0\u1ee3c\tth\u1ecfa\tm\u00e3n\tcho c\u1eb7p\thi\u1ec7n\tt\u01b0\u1ee3ng\tA-C.\tS\u1ef1\tgi\u1ea3\t\u0111\u1ecbnh\tn\u00e0y\tl\u00e0\tm\u1ed9t\tgi\u1ea3\tthuy\u1ebft\tv\u1eadt\tl\u00fd\tv\u1ec1\t\u0111\u1ecbnh\tlu\u1eadt\ttruy\u1ec1n \u00e1nh\ts\u00e1ng;\tn\u00f3\tnh\u1ea5t\t\u0111\u1ecbnh\tph\u1ea3i\t\u0111\u01b0\u1ee3c\tth\u1ecfa\tm\u00e3n,\tn\u1ebfu\tch\u00fang\tta\tmu\u1ed1n\tgi\u1eef\tv\u1eefng\t\u0111\u1ecbnh lu\u1eadt\th\u1eb1ng\ts\u1ed1\tc\u1ee7a\tv\u1eadn\tt\u1ed1c\ttruy\u1ec1n\tc\u1ee7a\t\u00e1nh\ts\u00e1ng\ttrong\tch\u00e2n\tkh\u00f4ng.","[29]\tCh\u1eb3ng\th\u1ea1n\ttrung\t\u0111i\u1ec3m\tc\u1ee7a\ttoa\tth\u1ee9\tnh\u1ea5t\tv\u00e0\ttrung\t\u0111i\u1ec3m\tc\u1ee7a\ttoa\tth\u1ee9\t100.","[30]\t\u00dd\tn\u00f3i\tch\u00fang\tta\tn\u00ean\txem\tc\u00e1c\tb\u1ed9\tkhung\tn\u00e0y\tl\u00e0\thai\th\u1ec7\tt\u1ecda\t\u0111\u1ed9\ttr\u1eebu\tt\u01b0\u1ee3ng\tt\u1ed3n t\u1ea1i\tsong\tsong\tnhau\t(ND).","[31]\t M\u1ed9t\t s\u1ef1\t suy\t \u0111\u01a1n\t gi\u1ea3n\t c\u1ee7a\t ph\u00e9p\t bi\u1ebfn\t \u0111\u1ed5i\t Lorentz\t \u0111\u01b0\u1ee3c\t tr\u00ecnh\t b\u00e0y\t trong ph\u1ea7n\tph\u1ee5\tl\u1ee5c\t(ND).","[32]\tmetre-rod;\tMeterstab,\tc\u00f3\tchi\u1ec1u\td\u00e0i\tl\u00e0\t1\tm\u00e9t\t(ND).","[33]\tT\u1ee9c\tn\u00f3\tc\u00f3\tt\u00ednh\tch\u1ea5t\t\u0111\u1ed1i\tx\u1ee9ng\tgi\u1eefa\thai\th\u1ec7\tK\tv\u00e0\tK'\t(ND).","[34]\tFizeau\t t\u00ecm\t th\u1ea5y\t k\u1ebft\t qu\u1ea3\t W\t =\t w\t +\t u(1-1\/n\t2\t),\t trong\t \u0111\u00f3\t n\t =\t c\/w\t l\u00e0\t chi\u1ebft xu\u1ea5t\tc\u1ee7a\tch\u1ea5t\tl\u1ecfng.\tM\u1eb7t\tkh\u00e1c,\tv\u00ec\tvw\/c\t2\tnh\u1ecf\t\u0111\u1ed1i\tv\u1edbi\t1,\tch\u00fang\tta\ttr\u01b0\u1edbc\tnh\u1ea5t\tc\u00f3\tth\u1ec3 thay\t(B)\tb\u1eb1ng\td\u1ea1ng\tW\t=\t(w\t+\tv)\t(1-vw\/c\t2\t),\thay\tc\u00f9ng\tv\u1edbi\tm\u1ed9t\t\u0111\u1ed9\tx\u1ea5p\tx\u1ec9,\tW\t=\tw\t+ v(1-1\/n\t2),\t\u0111i\u1ec1u\ttr\u00f9ng\tkh\u1edbp\tv\u1edbi\tk\u1ebft\tqu\u1ea3\tc\u1ee7a\tFizeau.","[35]\tgeneral;\tallgemein\t(ND)."]
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