"Jean-Baptiste le Rond d´Alembert (/ˌdæləmˈbɛər/; French: [ʒɑ̃ batist lə ʁɔ̃ dalɑ̃bɛːʁ]; 16 November 1717 – 29 October 1783) was a French mathematician, mechanician, physicist, philosopher, and music ...
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theorist. Until 1759 he was co-editor with Denis Diderot of the Encyclopédie. D´Alembert´s formula for obtaining solutions to the wave equation is named after him. The wave equation is sometimes referred to as d´Alembert´s equation." - (en.wikipedia.org 10.11.2019)
