acoustic admittance - definitie. Wat is acoustic admittance
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Wat (wie) is acoustic admittance - definitie

RECIPROCAL OF THE COMPLEX IMPEDANCE
Electrical admittance
  • 389x389px
  • frame

admittance         
n.
1) to gain admittance to
2) to deny admittance to (he was denied admittance to the concert)
admittance         
Admittance is the act of entering a place or institution or the right to enter it.
We had not been able to gain admittance to the flat.
= admission
N-UNCOUNT: oft N into/to n
Admittance         
II. Admittance ·noun The act of Admitting.
III. Admittance ·add. ·noun The reciprocal of impedance.
IV. Admittance ·noun The act of giving possession of a copyhold estate.
V. Admittance ·noun Permission to enter; the power or right of entrance; also, actual entrance; reception.
VI. Admittance ·noun Concession; admission; allowance; as, the admittance of an Argument.

Wikipedia

Admittance

In electrical engineering, admittance is a measure of how easily a circuit or device will allow a current to flow. It is defined as the reciprocal of impedance, analogous to how conductance & resistance are defined. The SI unit of admittance is the siemens (symbol S); the older, synonymous unit is mho, and its symbol is ℧ (an upside-down uppercase omega Ω). Oliver Heaviside coined the term admittance in December 1887. Heaviside used Y to represent the magnitude of admittance, but it quickly became the conventional symbol for admittance itself through the publications of Charles Proteus Steinmetz. Heaviside probably chose Y simply because it is next to Z in the alphabet, the conventional symbol for impedance.

Admittance is defined as

Y 1 Z {\displaystyle Y\equiv {\frac {1}{Z}}\,}

where

Y is the admittance, measured in siemens
Z is the impedance, measured in ohms

Resistance is a measure of the opposition of a circuit to the flow of a steady current, while impedance takes into account not only the resistance but also dynamic effects (known as reactance). Likewise, admittance is not only a measure of the ease with which a steady current can flow, but also the dynamic effects of the material's susceptance to polarization:

Y = G + j B {\displaystyle Y=G+jB\,}

where

  • Y {\displaystyle Y} is the admittance, measured in siemens.
  • G {\displaystyle G} is the conductance, measured in siemens.
  • B {\displaystyle B} is the susceptance, measured in siemens.
  • j 2 = 1 {\displaystyle j^{2}=-1}

The dynamic effects of the material's susceptance relate to the universal dielectric response, the power law scaling of a system's admittance with frequency under alternating current conditions.