Starting with a short story by Dino Buzzati, the article explains how some features of the Eiffel Tower relate to simple physics: e.g. due to its distinctive shape, its weight balances the torque produced by the pressure of the wind. […]
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Einstein worked eight years (from 1907 to 1915) to obtain an extension of special relativity to accelerated frames and to develop a relativistic theory of gravitation. Although the field equations of the theory of general relativity appeared at the end as a full realization of the heuristic assumptions he had formulated at an early stage of his investigations, […]