Albert Einstein was a German-born theoretical physicist, widely recognized as one of the greatest physicists of all time. Einstein is best known for developing the theory of relativity, but he also made important contributions to the development of the theory of quantum mechanics.br br br Albert Einstein adalah fisikawan teoretis kelahiran Jerman, secara luas diakui sebagai salah satu fisikawan terbesar sepanjang masa. Einstein terkenal atas pengembangan teori relativitas, tetapi ia juga membuat konstribusi penting terhadap pengembangan teori mekanika kuantum.