CALCULUS

Physicist Richard Feynman died 30 years ago today. Recently we took a look inside a notebook he used in high school to teach himself calculus. "Feynman’s calculus notes illustrate one of the famous physicist’s defining qualities: his insatiable curiosity," writes Melinda Baldwin. "When he found a subject that interested him, he was not about to wait for the right teacher to come along; he was determined to master it himself.
Referance: http://physicstoday.scitation.org/do/10.1063/PT.5.9099/full/