what did einstein do?
Theoretical Physicist
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 In a letter to Born on 4 December 1926 , Einstein made his famous remark regarding quantum mechanics : 

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 In a letter to The New York Times , Albert Einstein wrote : 

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 Einstein conducted other investigations that were unsuccessful and abandoned . These pertain to force , superconductivity , gravitational waves , and other research . 

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 In 1907 , Einstein was still eight years away from completing the general theory of relativity . Nonetheless , he was able to make a number of novel , testable predictions that were based on his starting point for developing his new theory : the equivalence principle . 

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 Einstein collaborated with others to produce a model of a wormhole . His motivation was to model elementary particles with charge as a solution of gravitational field equations , in line with the program outlined in the paper " Do Gravitational Fields play an Important Role in the Constitution of the Elementary Particles ? " . These solutions cut and pasted Schwarzschild black holes to make a bridge between two patches . 
