Mass Driver 1

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Constructed in 1976 and 1977, Mass Driver 1 was an early demonstration of the concept of the mass driver, a form of electromagnetic launch. It consisted of a series of coils through which a small bucket would travel, pushed by the magnetic field of each coil as it was energized. It was created by Gerard K. O'Neill, Henry Kolm, and a variety of students at MIT. It was able to achieve accelerations of around 30Gs.