Albert Einstein (1879-1955) in this book introduces to the general reader his theory of relativity: the special and the general theory. We see that special relativity, which has emerged from the Maxwell-Lorentz theory of electromagnetic phenomena, shows that the laws of science appear to be the same for all moving observers regardless of their speed, all in the absence of gravity. On the other hand, in general relativity, which can be considered Einstein's theory of gravity, we understand that the laws of science ought to be the same for every observer no matter how they are moving. In general relativity gravitation is a result of the curvature of the four-dimensional space-time continuum. Einstein refers us to Hermann Minkowski's (1864-1909) four-dimensional "world" and states how important Minkowski’s (one of Einstein’s teachers) idea was for the development of his theory of relativity. So, what did these moving and stationary observers notice? Their pocket watches that were perfectly synchronized at first recorded a different time after their observation was complete. Some dials were ahead, and others behind. So, time is relative, not absolute. The book does not concentrate only on science, but is also a tiny bit philosophical. The writing is simple, straightforward, and easy to understand, although at first, the theory is somewhat complex, but at the end of the day easier to understand than visualize. It's difficult to visualize three dimensions, let alone four. Einstein's intention in writing this book is to present the special and general theory of relativity to the broader public with simplified examples and equations. Einstein gives a lot of recognition to his predecessors, such as Euclid, Newton, Galilei, and Gauss, and does not overthrow or disregard their science theories and laws, but rather upgrades them. I am astonished at Einstein's capability on how he utilizes the available mathematical equations which he modifies and adapts so well to suit his revolutionary theory. We also notice that in general relativity no point of view is more important or preferred over any other point of view. I wonder if we can extend this conclusion to other subjects. Are all perceptions, coming from different angles, of equivalent importance? This is something to keep in mind while considering other people’s points of view.

İzafiyet TeorisiAlbert Einstein · Say Yayınları · 2015853 okunma

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