Geometry, Relativity, and the Fourth DimensionDover Publications, 1977 - 133 sider This is a highly readable, popular exposition of the fourth dimension and the structure of the universe. A remarkable pictorial discussion of the curved space-time we call home, it achieves even greater impact through the use of 141 excellent illustrations. This is the first sustained visual account of many important topics in relativity theory that up till now have only been treated separately. |
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... origin - are straight , but lines that do not go through the origin appear to bend away as they go out toward infinity . This effect is more pronounced for lines that are further away from you . If you were standing in a corridor in ...
... origin . Put differently , it requires 1+ x2 + y2 + z2 4K2 times as big a coordinate change at the point ( x , y , z ) to produce the same distance change as such a coordinate change would have produced at the origin . Again , this ...
... origin ? As we get closer to the circle around the origin of radius 2 , x2 + y2 gets closer to 4 , and the denominator of our expression for ds approaches zero . This means that as you get close to the indicated circle , ds gets to be ...
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THE FOURTH DIMENSION | 1 |
NONEUCLIDEAN GEOMETRY | 17 |
CURVED SPACE | 36 |
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