FARADAY, describing his experiment which established a fundamental law of electrical science, — the induction of electric currents, — was asked, ‘What use is it?’ To which he gave the classic ...
Infinitesimal: How a Dangerous Mathematical Theory Shaped the Modern World, by Amir Alexander Robyn Arianrhod on a compelling tale of Jesuits, geometry and heresy in the turbulent 17th century ...
Time doesn’t exist, according to a letter from Bill Summers (22 October, p 34) because the present is infinitesimal. If that were so, then much of modern mathematics would have to go. Newton had to ...
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