Bessel


Also found in: Dictionary, Thesaurus, Wikipedia.

Bessel

Friedrich Wilhelm . 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
References in periodicals archive ?
Which is the significance of the previous theory on Bessel differential inequalities, with parameter [upsilon],
We use the standard Bessel functions of the first and second kinds [J.
Srivastava, A simple fractional-calculus approach to the solutions of the Bessel differential equation of general order and some of its applications, Comput.
The concern, Bessel points out, was both practical and symbolic.
Because of the exponential fall off of the Bessel functions for large argument, the energy loss in exciting plasma oscillations by such particles is negligible.
is the cumulative Bessel distribution in Equation (A5) in Appendix A.
We plot the error with respect to the direct evaluation of the Bessel function using the MATLAB internal subroutine.
If the right-hand side of (1) holds, it is said to be a Bessel sequence.
This yields the Bessel linear functional with [phi](x) = ([alpha] + 2)x + 2.
Bessel is perceptive on the impact of war and economic crisis, the persistence of agriculture, especially, but not only, in Eastern Europe, the impact of unemployment, the decline in family size, the rise in the proportion of the elderly, the impact of new technology, and the extent to which, despite the crisis, life went on.
Bessel functions are used to calculate each FM spectrum component amplitude as a ratio of its peak sine wave voltage to that of the modulated carrier, all as a function of M.
Four other commands, BUTTERWORTH, BESSEL, CHEBYINV, ELLIPTIC, for the other classic filter types, have the same simple user interface: source, order, cutoff, ripple levels, and destination.