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La fascinación de Newton por la naturaleza no se agotó en sus reproducciones mecánicas ni en sus descubrimientos matemáticos, físicos o astronómicos. El gran inventor inglés se apasionaba por descubrir no sólo lo observable, sino lo inobservable. El siglo pasado se descubrió que Newton tenían una gran parte de su obra dedicada a «estudios ocultos» como la cronología, la alquimia, la cábala o la interpretación de textos bíblicos. Es abrumadora la cantidad de páginas de alquimia que dejó escritas (aún se están digitalizando): Newton escribió diez veces más al respecto que sobre las ciencias empíricas. Para el genio de la física era tan delgada la línea que separaba las ciencias formales de las ocultas que parece sensato afirmar que en gran medida las prácticas alquímicas le sirvieron en sus importantes descubrimientos, mientras estudiaba los elementos constitutivos del universo, la transmutación de los metales o el elixir de la vida. Este libro reúne poemas, tratados, notas de laboratorio, epístolas, confesiones y cosmologías que Newton no se limita a copiar, ni siquiera a traducir, sino que va comentando y alterando libremente. Esta cuidada edición, recopilada y realizada por Gonzalo Torné, nos da a conocer a fondo más aspectos de la vida y obra de Newton.
Isaac Newton
Nació en 1643 en Woolsthorpe, Lincolnshire, Inglaterra. Estudió matemáticas en el Trinity College de la Universidad de Cambridge. Consiguió en el campo de la matemáticas sus mayores logros. En 1669 obtuvo la cátedra Lucasiana de matemáticas en la Universidad de Cambridge. La óptica también fue del interés de Newton. Dedujo la ley de la gravitación universal y la publicó su teoría en Principios matemáticos de la filosofía natural (1687), obra que marcó un punto de inflexión en la historia de la ciencia. Además de su interés por la ciencia, también se sintió atraído por el estudio de la alquimia, el misticismo y la teología. Falleció el 31 de marzo de 1727 en Londres. Reposa en la abadía de Westminster.
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