The questions he investigated: "Can we figure out the rate at which a propellor is spinning by analyzing this kind of photo? And can we figure out the real number of propellor blades in the photo?"
You can play a more complex version of that game using video of the vibrating strings on a musical instrument. Here's an especially good example: http://vimeo.com/4041788
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Ha, my friend used the same photo as the example for his mathematical analysis of the rolling shutter effect: http://danielwalsh.tumblr.com/post/54400376441/playing-detec...
The questions he investigated: "Can we figure out the rate at which a propellor is spinning by analyzing this kind of photo? And can we figure out the real number of propellor blades in the photo?"
You can play a more complex version of that game using video of the vibrating strings on a musical instrument. Here's an especially good example: http://vimeo.com/4041788