Mene ne gravitational akai, kamar yadda aka lasafta, kuma wannan darajar da aka yi amfani da inda

Kamar yadda daya daga cikin muhimman hakkokin yawa a cikin kimiyyar lissafi, da gravitational m aka farko da aka ambata a cikin 18th karni. A daidai wannan lokaci da muke da aka dauka na farko yunkurin da su domin auna darajar, amma saboda da ajizanci na kayan aiki da kuma rashin ilmi a cikin wannan filin, to sa ya yiwu ne kawai a cikin tsakiyar karni na 19th. Daga baya wannan sakamakon da aka akai-akai gyara (na ƙarshe ga wannan da aka yi a 2013). Duk da haka, ya kamata a lura da cewa babba bambanci tsakanin na farko (G = 6,67428 (67) · 10 ^-11 s ^-2 · · m³ kg ^-1 ko H · · m² ^-2 kg) da kuma na karshe (G = 6,67384 ( 80) · 10 ^-11 s ^-2 · · m³ kg ^-1 ko H · · m² kg ^-2) dabi'u ba ya wanzu.

Bin wannan factor ga m dalilai, za a fahimci cewa irin wannan ne m cikin sharuddan duniya duniya (idan ba su yi reservations firamare barbashi kimiyyar lissafi da kuma sauran karami da aka sani kimiyya). Wannan yana nufin cewa gravitational m na Duniya, da Moon ko Mars, ba zai bambanta da juna.

Wannan darajar ne ainihin m, a na gargajiya makanikai. Saboda haka, gravitational m ne da hannu a wani iri-iri na lissafin. A musamman, ba tare da ciwon bayanai game da fiye ko žasa da ainihin darajar da wannan siga, da masu bincike ba zai iya lissafta wannan wani muhimmin factor a cikin sarari masana'antu, cikin hanzari da free fall (wanda zai zama su ga kowane duniyar tamu ko wasu wani sarari suKe jiki).

Amma duk da haka Newton, bayyana ta cikin dokokin nauyi a cikin wani janar hanya, da gravitational m da aka sani kawai a ka'idar. Wancan ne, ya ya iya kirkiro daya daga cikin mafi muhimmanci jiki postulates, ba tare da ciwon bayani game da adadin da wanda shi ne, a gaskiya, an tushen.

Ba kamar sauran komowa, game da abin da yake cikin gravitational akai, kimiyyar lissafi iya kawai ce tare da wasu daidaito hannun jari. Da darajar da aka samu sake lokaci zuwa lokaci, kuma kowane lokaci shi ne daban-daban daga baya daya. Mai masana kimiyya yi imani da cewa wannan hujja ba a hade da shi ya canjãwa, amma tare da wani karin maras muhimmanci dalilin. Da fari dai, wannan ji (ga lissafi na wannan m ne da za'ayi daban-daban gwaje-gwajen), kuma abu na biyu, daidaici na'urorin, wanda a hankali ya karu, data ana kayyade, da kuma sabon sakamakon da aka samu.

Ganin cewa a cikin gravitational m ne mai daraja auna 10 zuwa -11 digiri (cewa na gargajiya makanikai ultrasmall darajar), shi ne ba abin mamaki ba m tsaftacewa coefficient. A mafi cewa shi ne batun gyara alama fara da 14 gidan goma wurare.

Duk da haka, akwai a cikin zamani kalaman kimiyyar lissafi wani ka'idar, wanda sa a gaba Fred Hoyle shima da Yahaya. Narlikar a cikin 70-ies karni na karshe. Bisa ga zato, da gravitational m rage-rage tare da lokaci, wanda rinjayar da yawa wasu Manuniya cewa suna dauke constants. Saboda haka, American falakin van Flandern aka alama da sabon abu na wani kadan hanzari na Moon da kuma sauran wani sarari suKe jikinsu. Shiryar da wannan ka'idar, ya kamata a zaci cewa kowane duniya kurakurai a cikin farkon lissafin yi ba, da kuma bambanci a sakamakon shi ne saboda da m canje-canje a cikin darajar kanta. Wannan guda ka'idar ta ce game da impermanence wasu sauran canji kamar gudun haske a cikin injin.