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Enlace: http://galileo.imss.firenze.it/multi/torricel/index.html
Descripción: Institute and Museum of History of Science.
Edited by Egidio Festa.
«There are four different lines of research evident in the works of Torricelli, which cover almost all the subjects treated by Galileo, with the exception of astronomy. In the first - Geometry - Torricelli obtained remarkable results, in particular the quadrature of the cycloid curve and the cubature of the hyperboloid of revolution (acute hyperbolic solid). He was the first to use "curved indivisibles", contributing in this way to the "method of indivisibles" introduced into geometry by Bonaventura Cavalieri. The close scientific collaboration between the two outstanding mathematicians, also extremely close friends, is documented by a rich scientific correspondence.
The second direction of research, to maintain this system of classification, consists of the application of geometry to the study of motion.
The barometric experiment, which led to the invention of the mercury barometer, and the development of techniques for producing telescope lenses are two final directions of research in which Torricelli demonstrated an ability comparable to that of a skilled artisan.»
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