Albert Einstein: He Apologized to Isaac Newton

Born on this day was Albert Einstein,

A genius whose theories define

Space-Time's proclivity

For  Relativity.

 

Special Theory of Relativity (1905)- "The special theory of relativity can be put in a nutshell: It is not possible to measure uniform motion in any absolute way. If we are on a smoothly, uniformly moving train, we have to peek through a window and look at some other object, say a telephone pole, to make sure we are moving. Even then we cannot say positively whether the train is moving past the pole or the pole moving past the train. The best we can do is say that the train and the ground are in relative uniform motion....The special theory of relativity has nothing new to say about accelerated motion." [Martin Gardner, "Relativity Simply Explained" p. 31]

 

General Theory of Relativity (1916)- "In 1916, Albert Einstein proposed an interaction between mass-energy and the structure of space-time. Mass-energy produces 'curvature' in space-time---i.e., it deviates from flat, Euclidean space. Curved space-time in  turn changes the paths of mass-energy through it. Consider the two-dimensional space of an even lawn. Where the lawn is flat, a ball bowled along it will proceed in a straight line at a constant velocity, if we ignore friction. This situation corresponds to empty space. But suppose the effect of  a mass placed on the lawn creates a slight local depression, a 'curvature' of the surrounding 'space'. A ball bowled near it will deviate from its previously straight path toward the mass. The effect is the same as that of gravitational attraction.  Einstein worked out a theory, described in beautifully elegant equations for the whole of four-dimensional space-time. Instead of gravitation his theory gives us changes in the fabric of space-time geometry itself whenever it is near masses." [Ian Marshall and Dana Zohar, "Who's Afraid of Schrodinger's Cat?' pp. 170-171]

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