This is probably all explained by the fact that everyone that has seen the illusion in daylight has actually seen the product advertised at:
http://www.autopure.com/Spinner.htm :) Rick Dr. Rick Froman Associate Professor of Psychology John Brown University 2000 W. University Siloam Springs, AR 72761 [EMAIL PROTECTED] (479) 524-7295 http://www.jbu.edu/academics/sbs/faculty/rfroman.asp -----Original Message----- From: Stephen Black [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 20, 2004 12:58 PM To: Teaching in the Psychological Sciences Subject: Re: Wagon-wheel illusion again On 20 Apr 2004, Ken Steele wrote, referring to Purves: > > The original demonstration was actually done inside with 34-W sealed > beam headlights. Yes, but in his introduction he said that he became interested in the topic after observing "automobile wheel covers, airplane propellers, jet engine fans..rotating in daylight". He also said "It should be noted that all the effects we describe were equally evident in sunlight". So where were his good vibes coming from? Stephen ___________________________________________________ Stephen L. Black, Ph.D. tel: (819) 822-9600 ext 2470 Department of Psychology fax: (819) 822-9661 Bishop's University e-mail: [EMAIL PROTECTED] Lennoxville, QC J1M 1Z7 Canada Dept web page at http://www.ubishops.ca/ccc/div/soc/psy TIPS discussion list for psychology teachers at http://faculty.frostburg.edu/psyc/southerly/tips/index.htm _______________________________________________ --- You are currently subscribed to tips as: [EMAIL PROTECTED] To unsubscribe send a blank email to [EMAIL PROTECTED] --- You are currently subscribed to tips as: [EMAIL PROTECTED] To unsubscribe send a blank email to [EMAIL PROTECTED]
