<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: I-General relativity GR, eyaziwa nangokuthi i-general theory of relativity noma i-GTR iyinkolelo-mbono ye-geometric yokudonsela phansi eyashicilelwa ngu-Albert Einstein ngo-1915 kanye nencazelo yamanje yokudonsela phansi kwe-physics yanamuhla. I - general relativity yenza i - special relativity ibe yinto evamile futhi ithatha indawo yomthetho ka - Newton wokudonsela phansi kwendawo yonke, inikeza incazelo ehlanganisiwe yokudonsela phansi njengempahla yokuma kwendawo nesikhathi, noma isikhala-sikhathi. Ikakhulukazi, ukugoba kwesikhala-sikhathi kuhlobene ngokuqondile namandla nomfutho wanoma iyiphi into nemisebe ekhona. Lobu budlelwano buchazwe yi-Einstein field equations, uhlelo lwe-partial differential equations. Umbuzo: Luhlobo luni lwemfundiso yokuhlobana okuvamile?  <response>: imfundiso yokwakheka 