Spinning Shadows

Authors
Roy Sorensen
Washington University in St. Louis
Abstract
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. Ultimately, I argue 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. I conclude with a discussion of how the dynamic aspects of shadows impose subtle constraints on other puzzles about shadows
Keywords Analytic Philosophy  Contemporary Philosophy  Philosophy of Mind
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ISBN(s) 0031-8205
DOI 10.1111/j.1933-1592.2006.tb00564.x
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References found in this work BETA

The Kinetic Depth Effect.Hans Wallach & D. N. O'Connell - 1953 - Journal of Experimental Psychology 45 (4):205.
In Defense of the Existence of States of Motion.Michael Tooley - 1988 - Philosophical Topics 16 (1):225-254.

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