Bruce Bassett,Ralph Edney

Introducing Relativity

It is now more than a century since Einstein's theories of Special and General Relativity began to revolutionise our view of the universe. Beginning near the speed of light and proceeding to explorations of space-time and curved spaces, “Introducing Relativity” plots a visually accessible course through the thought experiments that have given shape to contemporary physics. Scientists from Newton to Hawking add their unique contributions to this story, as we encounter Einstein's astounding vision of gravity as the curvature of space-time and arrive at the breathtakingly beautiful field equations. Einstein's legacy is reviewed in the most advanced frontiers of physics today — black holes, gravitational waves, the accelerating universe and string theory. This is a superlative, fascinating graphic account of Einstein's strange world and how his legacy has been built upon since.
276 trykte sider
Oprindeligt udgivet
2014

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    Ingridhar citeretfor 4 år siden
    But a cylinder is clearly not flat! How can this be?
    Well, because parallel geodesics remain equidistant, we know that the cylinder, like the flat sheet of paper, is INTRINSICALLY FLAT. However, it is intuitively clear that in some way the cylinder really is curved. And at the same time, it is intuitively obvious that a flat piece of paper really is flat.
    Ingridhar citeretfor 4 år siden
    CONVERSELY, ON A NEGATIVELY CURVED SPACE...
    ... THE SUM OF THE ANGLES OF A TRIANGLE IS LESS THAN 180 DEGREES
    Ingridhar citeretfor 4 år siden
    This is a general characteristic of positively curved spaces – the sum of angles of triangles formed from their geodesics is GREATER than 180 degrees

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