090529 Husker Train 113RT (permalink)
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The laser and on-board computers are powered by solar panels which share a roof panel on top of the hopper car with a GPS transponder. Dr. Shane Farritor and his laser-measuring hopper car. Track modulus is one of several indicators for the quality and performance of railroad track. It is the ratio of vertical rail deflection and the contact pressure between the rail base and track foundation.Photo by Craig Chandler / University Communications
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