## General Relativity from A to BFrom A to B may not seem a great distance to travel, but, as Robert Geroch demonstrates in his conversational style, our perception of distance is always relative to our position in space. For persons situated outside the speculative realms of physics and mathematics, Geroch's tour from A to B is a thorough introduction to Einstein's theory of general relativity. The early chapters are devoted to the development and modifications the crucial notion of space-time undergoes as it passes through the Aristotelian and Galilean viewpoints. From theories of absolute space and absolute time, Geroch than details modern ideas of a space-time in which neither space nor time is absolute, showing how our everyday conceptions are inappropriate to the physical world in which we live. |

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User Review - Dipesh - GoodreadsGeneral relativity - for when you get really serious Read full review

#### Review: General Relativity from A to B

User Review - Ivan Vukovic - GoodreadsYou can tell that the author of this little book is a brilliant mathematical physicist. The ideas are coherent, concisely presented, but without allowing unnecessary rigor to come in the way of ... Read full review

### Contents

Events and SpaceTime The Basic Building Blocks | 3 |

The Aristotelian View A Personalized Framework | 11 |

The Galilean View A Democratic Framework | 37 |

Difficulties with the Galilean View | 53 |

The Interval The Fundamental Geometrical Object | 67 |

The Physics and Geometry of the Interval | 113 |

### Common terms and phrases

actually answer apparent elapsed apparent spatial distance apparent speed Aristotelian group Aristotelian setup Aristotelian view B's clock black hole C's world-line centimeters clock world-line cm/sec collection of events consider corresponding cosmic ray course curvature decides describe determine discussion earth elapsed time according emitted event q everyday example experiment external Galilean view going gravitation happen horizontal 3-plane individual instruments internal region interpretation intersection interval intrinsic to space-time length light-cone light-pulses mass density matter measure meter stick method moving mu-meson nearby events nonrelativist observer obtain particle particular person physical phenomena physical world plane pole position in space position-lines pulse Pythagorean theorem question regard relationships between events relativity represent result rope rubber sheet sense shown in figure singularity space-time diagram space-time geometry spacelike speed of light statement Suppose surface theory theory of relativity things time-surfaces timelike related tion visually watch wish world-surface