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Kepler

Kepler by Walter W. Bryant
By: (1865-1923)

This biography of Johannes Kepler begins with an account of what the world of astronomy was like before his time, then proceeds to a look at his early years. Two chapters deal with his working relationship with Tycho Brahe. These are followed by a look at Kepler's laws and his last years.

First Page:

[Illustration: KEPLER]

Pioneers of Progress

Men of Science Edited by S. Chapman, M.A., D.Sc., F.R.S.

KEPLER

by WALTER W. BRYANT of the Royal Observatory, Greenwich

1920

CONTENTS.

I. Astronomy Before Kepler

II. Early Life of Kepler

III. Tycho Brahe

IV. Kepler Joins Tycho

V. Kepler's Laws

VI. Closing Years

Appendix I. List of Dates

Appendix II. Bibliography

Glossary

CHAPTER I.

ASTRONOMY BEFORE KEPLER.

In order to emphasise the importance of the reforms introduced into astronomy by Kepler, it will be well to sketch briefly the history of the theories which he had to overthrow. In very early times it must have been realised that the sun and moon were continually changing their places among the stars. The day, the month, and the year were obvious divisions of time, and longer periods were suggested by the tabulation of eclipses. We can imagine the respect accorded to the Chaldaean sages who first discovered that eclipses could be predicted, and how the philosophers of Mesopotamia must have sought eagerly for evidence of fresh periodic laws... Continue reading book >>


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