Permiability & Permitivity

[avi_e-]

permiability

Hi Friends,

What are the basic theoritical definitions of Permiability(µ) & Permitivity(ε)?
How are they differed from each other literally and techincally?



Regards,
Avinash.S.

 

[joe1986]

permitivity

hi avi,


permeability
1. the property of being permeable
2. the rate of flow of a fluid through a porous material
3. (geology) a measure of the ability of a rock to transmit water
4. (physics) a quantitative measure of the degree of magnetization of a material in the presence of an applied magnetic field (in terms of, for instance, Newtons per square Amperes in SI units).

Permittivity
it is a physical quantity that describes how an electric field affects and is affected by a dielectric medium, and is determined by the ability of a material to polarize in response to the field, and thereby reduce the total electric field inside the material. Thus, permittivity relates to a material's ability to transmit (or "permit") an electric field.

It is directly related to electric susceptibility. For example, in a capacitor, an increased permittivity allows the same charge to be stored with a smaller electric field (and thus a smaller voltage), leading to an increased capacitance.

 

[zollder]

eletronic permitivity

Permeability (electromagnetism):
https://en.wikipedia.org/wiki/Permeability_(electromagnetism)

Permittivity:
https://en.wikipedia.org/wiki/Permittivity

difference:

permeability is the degree of magnetization of a material that responds linearly to an applied magnetic field

Permittivity is a physical quantity that describes how an electric field affects and is affected by a dielectric medium, and is determined by the ability of a material to polarize in response to the field, and thereby reduce the total electric field inside the material. Thus, permittivity relates to a material's ability to transmit (or "permit") an electric field.


So, the first one is related to the magnetic field, as another one is related to the electric field.

 

[the_edge]

permiability]

Oh and what you forgot to mention, sqrt(µo*εo)=c
c is speed of light