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Cleomedes' Lectures on AstronomyA Translation of The Heavens$
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Cleomedes' Lectures on Astronomy: A Translation of The Heavens

Cleomedes and Lawrence Witmer

Print publication date: 2004

Print ISBN-13: 9780520233256

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520233256.001.0001

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PRINTED FROM CALIFORNIA SCHOLARSHIP ONLINE (www.california.universitypressscholarship.com). (c) Copyright University of California Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in CALSO for personal use.date: 19 January 2022

Chapter Two

Chapter Two

Chapter:
(p.127) Chapter Two
Source:
Cleomedes' Lectures on Astronomy
Author(s):

Alan C. Bowen

Robert B. Todd

Publisher:
University of California Press
DOI:10.1525/california/9780520233256.003.0011

This chapter describes that the Sun is larger than the Earth. Since the Earth does not conceal even a small fraction of a degree, whereas the Sun occupies a magnitude of almost one half degrees, the Sun is larger than the Earth. The Sun both rises and sets over an extended interval of time. The shadow of the Earth is conical, and, if that is so, the Earth has as the cause of its illumination something larger than it—the Sun.

Keywords:   Sun, Earth, conceal, conical, illumination

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