iterative attenuation coefficient - definitie. Wat is iterative attenuation coefficient
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Wat (wie) is iterative attenuation coefficient - definitie

MEASURE FOR THE EXPONENTIAL REDUCTION OF A QUANTITY ALONG A PATH DUE TO ABSORPTION AND SCATTERING
Absorption coefficient; Absorption Coefficient; Linear attenuation coefficient; Linear coefficient; Linear absorption coefficient; Narrow beam attenuation coefficient; Scattering coefficient

Attenuation coefficient         
The linear attenuation coefficient, attenuation coefficient, or narrow-beam attenuation coefficient characterizes how easily a volume of material can be penetrated by a beam of light, sound, particles, or other energy or matter. A coefficient value that is large represents a beam becoming 'attenuated' as it passes through a given medium, while a small value represents that the medium had little effect on loss.
Mass attenuation coefficient         
  • NIST]]'s XCOM database.
  • '''Mass attenuation coefficient''' values shown for all elements with [[atomic number]] Z smaller than 100 collected for photons with energies from 1 keV to 20 MeV. The discontinuities in the values are due to [[absorption edge]]s which were also shown.
QUOTIENT OF THE LINEAR PHOTON ATTENUATION COEFFICIENT AND THE MASS DENSITY
E 1%; Mass extinction coefficient; Mass absorption coefficient; Mass absorptivity
The mass attenuation coefficient, or mass narrow beam attenuation coefficient of a material is the attenuation coefficient normalized by the density of the material; that is, the attenuation per unit mass (rather than per unit of distance). Thus, it characterizes how easily a mass of material can be penetrated by a beam of light, sound, particles, or other energy or matter.
Iterative method         
NUMERICAL METHOD IN WHICH THE N-TH APPROXIMATION OF THE SOLUTION IS OBTAINED ON THE BASIS ON THE (N-1) PREVIOUS APPROXIMATIONS
Iterative methods; Krylov subspace methods; Krylov subspace method; Iterative approximation; Iteration scheme; Iterative algorithm; Iterative procedure; Iteration algorithm; Iteration methods; Iterative convergence; Iterative solver; Direct method (computational mathematics); Stationary iterative method; Iteration method
In computational mathematics, an iterative method is a mathematical procedure that uses an initial value to generate a sequence of improving approximate solutions for a class of problems, in which the n-th approximation is derived from the previous ones. A specific implementation of an iterative method, including the termination criteria, is an algorithm of the iterative method.

Wikipedia

Attenuation coefficient

The linear attenuation coefficient, attenuation coefficient, or narrow-beam attenuation coefficient characterizes how easily a volume of material can be penetrated by a beam of light, sound, particles, or other energy or matter. A coefficient value that is large represents a beam becoming 'attenuated' as it passes through a given medium, while a small value represents that the medium had little effect on loss. The SI unit of attenuation coefficient is the reciprocal metre (m−1). Extinction coefficient is another term for this quantity, often used in meteorology and climatology. Most commonly, the quantity measures the exponential decay of intensity, that is, the value of downward e-folding distance of the original intensity as the energy of the intensity passes through a unit (e.g. one meter) thickness of material, so that an attenuation coefficient of 1 m−1 means that after passing through 1 metre, the radiation will be reduced by a factor of e, and for material with a coefficient of 2 m−1, it will be reduced twice by e, or e2. Other measures may use a different factor than e, such as the decadic attenuation coefficient below. The broad-beam attenuation coefficient counts forward-scattered radiation as transmitted rather than attenuated, and is more applicable to radiation shielding.