- Title Pages
-
The Joan Palevsky
Imprint in Classical Literature
- [UNTITLED]
- Dedication
- Preface
- Abbreviations
- Introduction
- Book One of Cleomedes’ The Heavens
-
Chapter One
1 - Chapter Two
- Chapter Three
-
Chapter Four
1 - Chapter Five
-
Chapter Six
1 - Chapter Seven
- Chapter Eight
- Book Two of Cleomedes’ The Heavens
- Chapter One
- Chapter Two
- Chapter Three
- Chapter Four
- Chapter Five
- Chapter Six
-
Chapter Seven
1 - Figures
- Appendix: Posidonius on Physics and Astronomy
- Glossary of Selected Terms
- Bibliography
- Passages from Cleomedes in Collections of Texts
- General Index
- Index Locorum
Chapter Three
Chapter Three
- Chapter:
- (p.44) Chapter Three
- Source:
- Cleomedes' Lectures on Astronomy
- Author(s):
Alan C. Bowen
Robert B. Todd
- Publisher:
- University of California Press
This chapter shows that the latitudes of the Earth have differing seasons caused by the motion of the Sun in the zodiacal circle. The lengthening of daytimes causes the seasons to be reversed in the temperate zones. Since the equinoctial circle is a great circle, it also maintains the same position relative [to the Earth] even in the temperate zones, whereas the [successive circles] that proceed from it toward the poles do not. The daytime gets continually shorter until the Sun approaches the winter tropic, while the nighttime remains longer than the daytime until, after the solstice at the winter tropic, the Sun provides a daytime that gets longer by turning back from this tropic to approach the equinoctial circle and causes the vernal equinox.
Keywords: seasons, latitudes, Earth, Sun, zodiacal circle, daytime, nighttime
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- Title Pages
-
The Joan Palevsky
Imprint in Classical Literature
- [UNTITLED]
- Dedication
- Preface
- Abbreviations
- Introduction
- Book One of Cleomedes’ The Heavens
-
Chapter One
1 - Chapter Two
- Chapter Three
-
Chapter Four
1 - Chapter Five
-
Chapter Six
1 - Chapter Seven
- Chapter Eight
- Book Two of Cleomedes’ The Heavens
- Chapter One
- Chapter Two
- Chapter Three
- Chapter Four
- Chapter Five
- Chapter Six
-
Chapter Seven
1 - Figures
- Appendix: Posidonius on Physics and Astronomy
- Glossary of Selected Terms
- Bibliography
- Passages from Cleomedes in Collections of Texts
- General Index
- Index Locorum