Select. From Kepler's Astronomia Nova / Edition 1by Johannes Kepler
Pub. Date: 01/28/2004
Publisher: Green Lion Press
Johannes Kepler wrote Astronomia Nova (1609) in a single-minded drive to sweep away the ancient and medieval clutter of spheres and orbs and to establish a new truth in astronomy, based on physical causality. Thus a good part of the book is given over to a nontechnical discussion of how planets can be made to move through space by physical forces. This is the theme
Johannes Kepler wrote Astronomia Nova (1609) in a single-minded drive to sweep away the ancient and medieval clutter of spheres and orbs and to establish a new truth in astronomy, based on physical causality. Thus a good part of the book is given over to a nontechnical discussion of how planets can be made to move through space by physical forces. This is the theme of the readings in the present module.
The selection features, in the first place, the complete introduction to Astronomia Nova. In this influential essay Kepler gives us his views on the planetary systems debate, ranging over a wide range of topics including causes of motions, criteria for choosing one theory over another, gravity and the tides, and the proper relations between science and Scripture. This introduction was Kepler's most widely read work, appended to the Latin editions of Galileo's Dialogue, and translated into the vernacular.
The Introduction is followed by a substantial selection of chapters presenting Kepler's new celestial physics. In Chapter 7, Kepler gives an engaging account of how he came to work on Mars, and why Mars was crucially important to his success. Chapters 33 and 34 will also be of general interest, as they sketch out the arguments for the sun's dynamic role in moving the planets. These chapters are easily understandable and contain no mathematics.
For the more adventurous, there is a larger sequence that takes us from the basics of planetary motions all the way to Kepler's first two laws of planetary motion. These chapters occasionally require some basic geometry and the use of the sine function. The necessary astronomical information and terminology is provided in appendices and a glossary.
In these ground-breaking chapters, the true Kepler emerges, not as a speculative mystic or a number-crunching drudge, but as a first-rate scientific thinker with a wonderfully engaging narrative style.
- Green Lion Press
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- New Edition
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Table of Contents
Editor's Preface vii
About Johannes Kepler ix
Kepler's Introduction 1
Chapter 1 Introduction to the celestial motions* 29
Chapter 2 Physical implications of theories of circular motion 37
Chapter 7 How I came to work on Mars 41
Chapter 24 The earth, like other planets, moves nonuniformly 45
Chapter 32 The Physical reality behind nonuniform motion 51
Chapter 33 The power that moves the planets is in the sun 55
Chapter 34 The sun is a magnet, and rotates in its space 63
Chapter 39 How can the planetary powers make a circular orbit? 71
Chapter 40 A way to calculate using the physical speed rule 79
Chapter 44 The orbit is not a circle 83
Chapter 57 The physics and mathematics of a noncircular orbit 89
Epilogue: What about the ellipse? 95
Appendix A Geometrical Planetary Models 97
Appendix B Technical Notes 101
Bibliographical Note 109
About this series: Scientific Classics for Humanities Studies 110
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