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A coilgun is a type of projectile accelerator consisting of one or more coils used as electromagnets in the configuration of a linear motor that accelerate a ferromagnetic or conducting projectile to high velocity. [ 1 ] In almost all coilgun configurations, the coils and the gun barrel are arranged on a common axis. The name Gauss gun is sometimes used for such devices in reference to Carl Friedrich Gauss , who formulated mathematical descriptions of the magnetic effect used by magnetic accelerators. Coilguns generally consist of one or more coils arranged along a barrel, so the path of the accelerating projectile lies along the central axis of the coils.
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Background: This floating bridge, which was completed in 1966, carries State Route 520 from Seattle to Medina, Washington.