The giant 54-square-metre battery at the Ecole Polytechnique in Paris, built by order of Napoleon I in 1813. From Les Merveilles de la Science, published 1870.

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Keywords: 54, 1813, 19th, archival, archive, battery, built, century, ecole, engraving, france, french, giant, invention, metre, napoleon, nineteenth, order, paris, polytechnique, power, science, square, technological, technology