## Four Lectures on Relativity and Space |

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### Contents

LECTURE | 1 |

Relativity of Mass | 8 |

The Fourdimensional Timespace of Minkowski | 24 |

Copyright | |

12 other sections not shown

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### Common terms and phrases

180 degrees accelerated system appear curved beam of light billiard ball bundle centrifugal field centrifugal force characteristic constant circumference conception congruent constant speed coordinates curvature diameter differential metric dimensional dimensions earth Einstein's electric electromagnetic element elliptic 2-space elliptic geometry equations ether Euclidean 3-space Euclidean plane exist figures finite distance fixed stars four-dimensional give gravitational field gravitational force hyperbolic space imaginary inertial mass inertial motion infinite number infinitely distant point instance intersect kinetic energy law of gravitation length magnetic field manifold mathe mathematical space measure mechanics metric axiom metric relations metric space miles per second Newtonian observer Paperbound parallel physical space Pi and P2 PiP3 plane geometry points Pi projective geometry pseudo-sphere radiation radius relative motion relative velocity relativity theory rotation shorter speeding railway train sphere spherical straight line surface theorems theory of relativity three-dimensional tion triangle triside two-dimensional velocity of light wave motion zero