Jump to ContentJump to Main Navigation
Seeing Dark ThingsThe Philosophy of Shadows$
Users without a subscription are not able to see the full content.

Roy Sorensen

Print publication date: 2008

Print ISBN-13: 9780195326574

Published to Oxford Scholarship Online: January 2008

DOI: 10.1093/acprof:oso/9780195326574.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (www.oxfordscholarship.com). (c) Copyright Oxford University Press, 2018. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a monograph in OSO for personal use (for details see www.oxfordscholarship.com/page/privacy-policy).date: 15 October 2018

Spinning Shadows

Spinning Shadows

Chapter:
(p.76) 4 Spinning Shadows
Source:
Seeing Dark Things
Author(s):

Roy Sorensen (Contributor Webpage)

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195326574.003.0005

If a spinning sphere casts a shadow, does the shadow also spin? This riddle is the point of departure for an investigation into the nature of shadow movement. A general theory of motion will encompass all moving things, not just physical objects. The ultimate thesis is that round shadows do indeed spin. Shadows are followers of the objects that cast them. Parts of the shadow correspond to parts of the leader, so motion of the caster's parts accounts for motions of the shadow's parts. The chapter ends with a discussion of how the dynamic aspects of shadows impose subtle constraints on other puzzles about shadows.

Keywords:   motion, puzzle, spin, shadow

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .