For example, when Einstein developed the Special and General Theories of Relativity, he did not in any way refute or discount Newton's Principia.
Dǎɣ asikin, agud was Einstein asewaɗ təmusnawen tə olahnen əs uqud əd atamosan, wadila wala iyan ehandag iknasan meɣ inkašanin dǎɣ Principia ən Newton.