Howrah Rajdhani - At 50, the Handsome King 👑 is still ruling the tracks superbly. - Somanko

in school days we used to have a question on thermal expansion...why is there gap between two rail tracks? the answer would be to allow expansion of tracks during summers and prevent tracks from bending...
thanks to terrorist activities and fish plate removals, now railtracks are long welded. kilometres of tracks without fishplates and junctions. has the heat stopped increasing the length of tracks or has the coefficient of thermal expansion for iron decreased?

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