The Annals of philosophy Volume 1 1813 Jan-Jun

 
9781150162909: The Annals of philosophy Volume 1 1813 Jan-Jun
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1813 Excerpt: ...the object of different memoirs which have not yet been read to the Class, we cannot give an account of them here. Memoirs on different new'Phenomena of Optics. By M. Arago. We could have wished to have given as detailed an account of the different memoirs in which M. Arago has exposed to the Class his new experiments on light. We should have seen experiments not less interesting, and theoretic ideas, which, to be rendered sufficiently clear, require new experiments, of which M. Arago has conceived the idea, and formed the plan; but being able to devote to these experiments only the few moments of leisure left him by his functions of Astronomer at the Imperial Observatory, he has not been able to communicate his ideas to the Class, but in proportion as he could notify them in detached notices. He proposes to complete them, and to class them in a luminous order. Thus we are obliged to defer to our history for 1813, our detail of these experiments, made in order to throw light on the most difficult points of optics, that is to say, the explanation of the phenomena of the colours of bodies. Different Memoirs. By M. Rochon. M. Rochon, while communicating to the Class some new researches in which he was engaged in the year 1812, had occasion to notice some of his old labours, either little known, or intimately connected with his iecent speculations. In a memoir on the art of multiplying copies he has noticed the process of the celebrated Franklin, who first introduced into France the art of multiplying copies of writings. M. Rochon at that time improved these processes, by contriving a machine for engraving, which was approved of by the Academy of Sciences. In continuing the subject, he proved by his experiments that the ancient bronze dies, composed of copper h...

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