<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: Isethulo: Ngokushesha ngemva kokushicilela inkolelo-mbono ekhethekile yokulinganisela ngo-1905, u-Einstein waqala ukucabanga ngendlela yokufaka amandla adonsela phansi esakhiweni sakhe esisha sokulinganisela. Ngo - 1907, waqala ngokuhlola okulula okucatshangwayo okwakuhilela umqaphi owayesewa ngokukhululeka, waqala lokho okwakuyoba ukufuna kwakhe iminyaka eyisishiyagalombili inkolelo - mbono yobudlelwane yamandla adonsela phansi. Ngemva kokuphambuka kaningi nokuqala kabi, umsebenzi wakhe waphetha ngokwethula kuyi-Prussian Academy of Science ngo-November 1915 lokho manje okwaziwa ngokuthi izibalo zika-Einstein zenkundla. Lezi zilinganisi zichaza indlela i-geometry yesikhala nesikhathi esithonywe ngayo yinoma yikuphi okuqukethwe kanye nemisebe ekhona, futhi yakha umnyombo we-Einsteins general theory of relativity. Izilinganisi zensimu ka-Einstein azizona ezomugqa futhi kunzima kakhulu ukuzixazulula. U-Einstein wasebenzisa izindlela zokulinganisa lapho enza izibikezelo zokuqala zethiyori. Kodwa ekuqaleni kuka-1916, isazi sesayensi yemithala uKarl Schwarzschild sathola ikhambi lokuqala elingelona elincane eliqondile lezinkulumo zika-Einstein, i-Schwarzschild metric. Lesi sixazululo sabeka isisekelo sokuchazwa kwezigaba zokugcina zokuwohloka kwamandla adonsela phansi, nezinto ezaziwa namuhla ngokuthi izimbobo ezimnyama. Ngawo lowo nyaka, kwathathwa izinyathelo zokuqala zokuhlanganisa isixazululo sikaSchwarzschild ezintweni ezikhokhiswa ngogesi, okwagcina kuholele esixazululweni sikaReissnerNordström, manje esihlotshaniswa nezimbobo ezimnyama ezikhokhiswa ngogesi. Ngo - 1917, u - Einstein wasebenzisa inkolelo - yakhe endaweni yonke, waqala umkhakha we - relativistic cosmology. Ngokuvumelana nokucabanga kwalesi sikhathi, wacabanga ukuthi indawo yonke ayishintshi, wanezela ipharamitha entsha ekubaleni kwakhe kwasekuqaleni kwensimu - i-cosmological constant - ukuze ivumelane nalokho kucatshangelwa kokubuka. Nokho, ngo - 1929, umsebenzi kaHubble nabanye wawubonise ukuthi indawo yonke iyanda. Lokhu kuchazwa kalula izixazululo ze-cosmological ezandayo ezatholakala nguFriedmann ngo-1922, ezingadingi okuqhubekayo kwe-cosmological. ULemaître wasebenzisa lezi zixazululo ukuze asungule uhlobo lokuqala lwezimodeli ze-Big Bang, lapho... Umbuzo: U-Eddington wahola lolu hambo ngamuphi unyaka?  <response>: Ngo-1919 