- Friedrich Wilhelm ( ˈfriːdrɪç ˈvɪlhɛlm ). 1784–1846, German astronomer and mathematician. He made the first authenticated measurement of a star's distance (1841) and systematized a series of mathematical functions used in physics
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Bes•sel
(bes′əl),USA pronunciation n.
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Bessel /ˈbɛsəl/ n
'Bessel' also found in these entries (note: many are not synonyms or translations):