Bessel, Friedrich Wilhelm — born July 22, 1784, Minden, Brandenburg died March 17, 1846, Königsberg, Prussia German astronomer. He was the first to measure (by means of parallax) the distance to a star other than the Sun. One of his major discoveries was that the bright… … Universalium
Bessel ellipsoid — The Bessel ellipsoid (or Bessel 1841) is an important reference ellipsoid of geodesy. It is currently used by several national surveys of Europe and on other continents, but will be replaced in the next decades by modern ellipsoids of satellite… … Wikipedia
Bessel (Cratère) — Pour les articles homonymes, voir Bessel (homonymie). Bessel Survol de Bessel par la mission Apollo 15 … Wikipédia en Français
Bessel (cratere) — Bessel (cratère) Pour les articles homonymes, voir Bessel (homonymie). Bessel Survol de Bessel par la mission Apollo 15 … Wikipédia en Français
Bessel — may refer to: * Bessel beam * Bessel ellipsoid * Bessel function in mathematics * Bessel s inequality in mathematics * Bessel filter, a linear filter often used in audio crossover systems * Bessel (crater), a small lunar crater * Bessel transform … Wikipedia
Bessel Kok — (born 13 December, 1941) is a Dutch businessman and chess organiser living in Prague. He has served in top management positions in telecommunications companies in Belgium (Belgacom) and in the Czech Republic. He was also President of the Belgian… … Wikipedia
Bessel, Johann Franz — • Benedictine, abbot, and historian (1672 1749) Catholic Encyclopedia. Kevin Knight. 2006 … Catholic encyclopedia
Bessel function — In mathematics, Bessel functions, first defined by the mathematician Daniel Bernoulli and generalized by Friedrich Bessel, are canonical solutions y(x) of Bessel s differential equation: for an arbitrary real or complex number α (the order of the … Wikipedia
Bessel-Clifford function — In mathematical analysis, the Bessel Clifford function is an entire function of two complex variables which can be used to provide an alternative development of the theory of Bessel functions. If :pi(x) = frac{1}{Pi(x)} = frac{1}{Gamma(x+1)}is… … Wikipedia
Bessel polynomials — In mathematics, the Bessel polynomials are an orthogonal sequence of polynomials. There are a number of different but closely related definitions. The definition favored by mathematicians is given by the series (Krall Fink, 1948):y n(x)=sum… … Wikipedia
