Читать книгу Magic Shadows. The Story of the Origin of Motion Pictures онлайн

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In that book of Bacon there is also the theory of going westward to India—the idea that later resulted in the discovery of America. The idea, therefore, was not original with Christopher Columbus. Bacon deserves great credit, for his views at least had a direct influence. His statements were used without credit by Pierre d’Ailly in his Imago Mundi, published in 1480. We know Columbus consulted this work, for he quoted a passage in his letter to Ferdinand and Isabella when seeking financial support for the voyage. And it was the very passage of Bacon, stolen by d’Ailly, which Columbus used to drive home his arguments with the King and Queen of Spain.

Bacon devoted ten whole years to the study of optics and some of his best work was done in that field. The principal influence on Bacon in this subject was the work of Alhazen, the Arab. The concentration of rays and the principal focus, knowledge necessary for fine camera work, as well as good picture projection, were familiar to Bacon. This was an advance over Euclid, Ptolemy and Alhazen. Bacon recognized that light had a measurable speed. Up to that time most men thought that the speed of light was infinite. (Measurements were not made until the 19th century.) Bacon also studied the optical illusions pertaining to motion and rest, fundamental for the motion picture. He belonged to the school of vision study that believed we see by something shot out from the objects viewed. This is directly opposed to the idea of Lucretius and others who held that something was shot out of the eye to make sight possible. There is no evidence that Bacon actually invented a telescope but he certainly was aware of the principle. He planned a combination of lenses which would bring far things near.