A Brief History of Time#1 NEW YORK TIMES BESTSELLER |
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... space . The theory of relativity gets rid of absolute time . Consider a pair of twins . Suppose that one twin goes ... time at the back of one's mind . In the theory of relativity there is no unique absolute time , but instead each ...
... space - time : particles try to follow the nearest thing to a straight path in a curved space , but because space - time is not flat their paths appear to be bent , as if by a gravitational field . When we apply Feynman's sum over ...
... space - time in any other way so as to permit time travel , one can show that one needs a region of space - time with negative curvature , like the surface of a saddle . Ordi- nary matter , which has a positive energy density , gives space ...
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Qualitative Data Analysis: A User-friendly Guide for Social Scientists Ian Dey No preview available - 1993 |