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Cool videos: mag-lev gears, human powered anti-gravity

The video above is a demonstration of a magnetic cog by Kundel Magnetics. Using magnetic fields instead of physical gears to transfer energy has many advantages like zero friction and no need for lubrication. Below the fold is a concept vehicle by the design group Oooms. The counter weight at one end of the vehicle allows a person to jump very high as if gravity were low. These two concepts, the gear and the vehicle, attack two major problem of efficiency: weight and friction. Traditional solutions have always been to use less stuff and make ... Read more →

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