## Essays in science |

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### Contents

Principles of Research | 1 |

On Scientific Truth ii | 11 |

Johannes Kepler | 22 |

Copyright | |

10 other sections not shown

### Common terms and phrases

absolute space acceleration according Albert Einstein axioms causal classical mechanics Clerk Maxwell co-ordinate system conceived concept of space connected continuum cylinder deduction described determined differential equations differential law distance distribution of velocities earth earth's orbit Einstein electrical electro-dynamics electro-magnetic field empirical facts empty space energy equal ether Euclidean geometry existence experience explain field-theory fixed stars Flettner Flettner ship forces acting formulation friction funda fundamental concepts gravitational field idea independent inert mass inertia inertial system Kepler lantern law of motion light linear element liquid logical Lorentz transformations mass point material points mathematical Maxwell's means ment n-leg nature Newton's law Newtonian Niels Bohr partial differential equation particles phenomena physical reality physicists planets ponderable matter possible postulates principle of relativity purely question regard Riemannian metric rotation scientific seems simplest solid bodies special theory straight line theoretical physics theory of gravitation theory of relativity thing tion tonian