Trains At Rest
by Marcia Lee Jones
Title
Trains At Rest
Artist
Marcia Lee Jones
Medium
Photograph - Photography
Description
A train is a form of rail transport consisting of a series of vehicles that usually runs along a rail track to transport cargo or passengers although magnetic levitation trains that float above the track exist too.[citation needed] Motive power is provided by a separate locomotive or individual motors in self-propelled multiple units. Although historically steam propulsion dominated, the most common modern forms are diesel and electric locomotives, the latter supplied by overhead wires or additional rails. Other energy sources include horses, rope or wire, gravity, pneumatics, batteries, and gas turbines. Train tracks usually consists of two, three or four rails, with a limited number of monorails and maglev guideways in the mix. The word 'train' comes from the Latin trahere 'pull, draw.
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August 15th, 2014
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