Friedrich Bessel

Friedrich Wilhelm Bessel (July 22, 1784 –  March 17, 1846) was a German mathematician, astronomer, and systematizer of the Bessel functions (which were discovered by Daniel Bernoulli). He was born in Minden, Westphalia and died of cancer in Königsberg (now Kaliningrad, Russia). Bessel was a contemporary of Carl Gauss, also a mathematician and astronomer.
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