Hi, It was a quiet day here in Rochester, NY, USA and I was a bit bored so I decided to simulate what goes on between the scanning action of the sensor of the digital camera installed in the phone and the rotating image of the airplane's propeller. Not having either a camera-phone or an aircraft I resorted to my flat-bed scanner and a makeshift prop made of the clear plastic protective disc that comes with a stack of CDs or DVDs with masking tape "blades" stuck to the disc. This is a "no words" status report ... maybe YOU can put words to it? http://people.rit.edu/andpph/a-misc/2008-propeller-demo-7462AA.jpg And this is the conclusion that I draw from the above improvised experimental set-up. http://people.rit.edu/andpph/a-misc/2008-propeller-demo-2AA.jpg ... but I am open to alternative explanations! I may have it backwards and reversed left to right or top to bottom, etc. ... ;) cheerio, andy
