# Bessel

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**Bessel** may refer to:

## Mathematics and science

- [Bessel beam](/source/Bessel_beam)
- [Bessel ellipsoid](/source/Bessel_ellipsoid)
- [Bessel function](/source/Bessel_function) in mathematics
- [Bessel's inequality](/source/Bessel's_inequality) in mathematics
- [Bessel's correction](/source/Bessel's_correction) in statistics
- [Bessel filter](/source/Bessel_filter), a linear filter often used in audio crossover systems
- Bessel transform, also known as Fourier-Bessel transform or [Hankel transform](/source/Hankel_transform)
- [Bessel window](/source/Bessel_window), in signal processing
- Besselian date, see [Epoch (astronomy)#Besselian years](/source/Epoch_(astronomy)#Besselian_years)

## Places

- [Bessel Fjord](/source/Bessel_Fjord), NE Greenland
- [Bessel Fjord, NW Greenland](/source/Bessel_Fjord,_NW_Greenland)
- [Bessel (crater)](/source/Bessel_(crater)), a small lunar crater

## People

### Surname

- [Friedrich Wilhelm Bessel](/source/Friedrich_Wilhelm_Bessel) (1784–1846), German mathematician, astronomer, and systematizer of the Bessel functions
- [Johann Franz Bessel](/source/Johann_Franz_Bessel) (1672–1749), German Benedictine abbot and historian
- [Vasily Bessel](/source/Vasily_Bessel) (1843–1907), Russian music publisher

### Given name

- [Bessel Kok](/source/Bessel_Kok) (born 1941), Dutch businessman and chess organiser
- [Bessel van der Kolk](/source/Bessel_van_der_Kolk) (born 1943), Dutch psychiatrist

## Other uses

- [1552 Bessel](/source/1552_Bessel), an asteroid
- [MV *Bessel*](/source/MV_Bessel), a German merchant ship in service 1928–45, latterly for the Kriegsmarine
- [V. Bessel and Co.](/source/V._Bessel_and_Co.), a musical publishing firm co-founded by Vasily Bessel

## See also

- [Bessell](/source/Bessell)

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