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permittivity

permittivity

1 8.8
How a material affects an electric field and how much electrical energy it can store
  • noun
  • /pərˌmɪtɪˈvɪti/
  • Specialized
: permitividad
  • Tau is the charge relaxation time, the permittivity divided by the conductivity.

Examples

  • Where E_n is the normal component of the electric field, Sigma is the surface charge density, and Epsilon_0 is the permittivity of free space.

    Academic text (1998)
  • In the case of a large permittivity, almost the entire anode voltage is applied to the film—anode vacuum gap.

    Academic text (2018)
  • And this is also equal to I upon epsilon which is just the permittivity times the D field.

  • It was shown that the permittivity of the film is quite high (on the order of ten or higher), the potential barrier becomes narrower, and its height decreases.

    Academic text (2018)
  • A film made of allotropic modifications of carbon (disregarding porosity) has a permittivity of about 16, which substantially reduces the strength of the image upon the transition of electrons from the metal to this film.

    Academic text (2018)
  • Triglycine sulfate (TGS) and its isomorphs have very favorable properties, including high pyroelectric coefficients and relatively low permittivity.

    Academic text (2005)
  • Let us consider the vacuum diode structure shown in Fig. 1 with 2D-periodic dielectric right parallelepipeds of size b x b x c with permittivity e, which are located on a conducting cathode with period a along the x and y axes.

    Academic text (2018)
  • The permittivity of the material determines how much electrical energy can be stored.

  • In electronics, understanding the permittivity of different materials is crucial for circuit design.

  • Researchers measured the permittivity of the insulating material to improve its performance in electric fields.

Surface Forms

permittivity singular

Morphology

permittivity = permittive (semi-transparent) = permit + ive + ity

Formation from an adjective ('permittive') by adding '-ity' is regular, but the technical physics meaning is specialized and not immediately guessable to average learners.

Etymology

The word permittivity comes from Latin parts per- 'through' and mittere 'to send', and you can see the same root in the words permit and transmit. So, permittivity is about how much a material 'lets' an electric field pass through it and how it stores electrical energy.