What's needed for apparent motion - creating the illusion of motion
• Flicker Fusion or Frequency - the number of flashes of light per second to merge or fuse the images so that the flicker itself is invisible. At least 50 to 60 flashes per second. (Hertz, ehh close..)
• Frame Rate
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"Friday 101 Interlaced and Progressive ...Explained!"
http://www.youtube.com/watch?v=xKMWjRlIvrY
