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"All fiction is propaganda, and the fiction we like is the propaganda we believe in, and the fiction we don't like is the propaganda we don't believe in."
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![]() Tired of paying high prices at the Authority catapult for goods shipped back to Earth, the hard-working Loonies decide to build one for themselves.
It turns out that hurling multi-ton cargo containers down to Earth has an alternative use during conflicts.
Prototype mass-drivers were first constructed in 1976. Mass Driver 1 was an early prototype mass driver. 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.
Compare to the earliest reference to the idea, the electric gun from Munro's 1897 novel A Trip to Venus.
See also the hybrid mass-driver from Robert Heinlein's 1950 novel The Man Who Sold The Moon and the Cyclotronic Ore-Hurler from Exit From Asteroid 60 (1940) by D.L. James.
Finally, take a look at a weaponized version of this idea, the stiletto beam from Arthur C. Clarke's 1955 novel Earthlight.
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