Definitions for permissivity
per·mis·siv·i·ty

WiktionaryRate this definition:0.0 / 0 votes

1. permissivitynoun

   Susceptibility to infection.

2. permissivitynoun

   permittivity

WikipediaRate this definition:0.0 / 0 votes

1. permissivity

   In electromagnetism, the absolute permittivity, often simply called permittivity and denoted by the Greek letter ε (epsilon), is a measure of the electric polarizability of a dielectric. A material with high permittivity polarizes more in response to an applied electric field than a material with low permittivity, thereby storing more energy in the material. In electrostatics, the permittivity plays an important role in determining the capacitance of a capacitor. In the simplest case, the electric displacement field D resulting from an applied electric field E is D = ε E . {\displaystyle \mathbf {D} =\varepsilon \mathbf {E} .} More generally, the permittivity is a thermodynamic function of state. It can depend on the frequency, magnitude, and direction of the applied field. The SI unit for permittivity is farad per meter (F/m). The permittivity is often represented by the relative permittivity εr which is the ratio of the absolute permittivity ε and the vacuum permittivity ε0 κ = ε r = ε ε 0 {\displaystyle \kappa =\varepsilon _{\mathrm {r} }={\frac {\varepsilon }{\varepsilon _{0}}}} .This dimensionless quantity is also often and ambiguously referred to as the permittivity. Another common term encountered for both absolute and relative permittivity is the dielectric constant which has been deprecated in physics and engineering as well as in chemistry.By definition, a perfect vacuum has a relative permittivity of exactly 1 whereas at standard temperature and pressure, air has a relative permittivity of κair ≈ 1.0006. Relative permittivity is directly related to electric susceptibility (χ) by χ = κ − 1 {\displaystyle \chi =\kappa -1} otherwise written as ε = ε r ε 0 = ( 1 + χ ) ε 0 {\displaystyle \varepsilon =\varepsilon _{\mathrm {r} }\varepsilon _{0}=(1+\chi )\varepsilon _{0}} The term "permittivity" was introduced in the 1880s by Oliver Heaviside to complement Thomson's (1872) "permeability". Formerly written as p, the designation with ε has been in common use since the 1950s.

How to pronounce permissivity?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say permissivity in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of permissivity in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of permissivity in Pythagorean Numerology is: 4

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Permissivity
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Permissivity