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The Eiffel tower is taller in summer! [Random Knowledge #32]
posted March 26 2013 22:30.16 by Giorgos Lazaridis

Steel has a thermal expansion coefficient of 13 x 10-6 m/m oC. This means that a one meter long piece of steel will expand for about 0.000455 meters for 35 degrees temperature increment. The Eiffel tower is 324 meters height. So in summer it gains about 15cm in height!

Photo: wikipedia

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