Chapter Four

Alan C. Bowen and Robert B. Todd

in Cleomedes' Lectures on Astronomy

Published by University of California Press

Published in print January 2004 | ISBN: 9780520233256
Published online March 2012 | e-ISBN: 9780520928510 | DOI:
Chapter Four

Show Summary Details


This chapter shows that the Moon is illuminated neither by inherent light, nor by reflection, but by the mingling of the Sun's light with the Moon's body. Several theories concerning the illumination of the Moon are presented. In addition, the impossibility of the Moon sending out light by reflection is outlined by arguments. The Sun is eclipsed through being obstructed by the Moon; certainly this happens only at their conjunction. Also, a solar eclipse is a condition affecting not the deity itself, but human's line of sight. A lunar eclipse, by contrast, is a condition affecting the deity itself, since the Moon, whenever it falls into the Earth's shadow, is deprived of the Sun's light and plunged into darkness.

Keywords: Moon; Sun; solar eclipse; lunar eclipse; light; reflection; illumination

Chapter.  3577 words. 

Subjects: Classical Philosophy

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.