Doppler effect with iPhone 4G video recording
Watch the blades on the starboard (on the left, at first) propellor: there seem to be two slowly-moving blades at first, then the apparent number of blades varies and they almost seem to reverse direction as the plane turns, and by the end there seem to be six or eight of them. Meanwhile, the other prop looks totally different the whole way through. In fact there were three blades on both of them. Weird.
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Watch the blades on the starboard (on the left, at first) propellor: there seem to be two slowly-moving blades at first, then the apparent number of blades varies and they almost seem to reverse direction as the plane turns, and by the end there seem to be six or eight of them. Meanwhile, the other …
