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A clip in the Science Please! collection, Wheel Meets Friction uses archival footage, animated illustrations and amusing narration to explain how the invention of the ball bearing reinvented the wheel.

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Science Please! : Wheel Meets Friction en vérsion HD et DVDrip . 1.2 GB HTML5

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Science Please! : Wheel Meets Friction en vérsion HD et DVDrip. 1.4 MB mp4

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