# Understanding Permeability of Space

• Nano-Passion
In summary, permeability and permittivity are properties of space that determine the speed of electromagnetic waves. In classical physics, permeability applies to magnetism and permittivity to electricity. In special relativity, these values may vary depending on the frame of reference. The presence of charges can cause anomalies in space, affecting the passage of electromagnetic waves. Matter can be seen as a system of charges in motion, where the flow of energy in electromagnetic fluctuations is stable and localized.
Nano-Passion
I've always found this interesting especially because I never really knew what it means hehe.

What is permeability of space?

To me it sounds like the maximum speed that a wave can go through space, and space is assigned a constant for its ability in suppressing its magnitude of speed ?

Yes. I keep seeing the term permeability of free space. So I'm assuming it doesn't hold exclusively to magnetism.

Classically, permeability applies only to magnetism and is more specifically called magnetic permeability. The related term for electricity is electric permittivity. Together, with other parameters they govern the speed of propagation of EM.

But of course, in SR the relationship between electric and magnetic fields varies depending on the frame of reference. Vacuum permittivity and permeability should not vary but within media the permittivity and permeability values are no longer constants.

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PhilDSP said:
Classically, permeability applies only to magnetism and is more specifically called magnetic permeability. The related term for electricity is electric permittivity. Together, with other parameters they govern the speed of propagation of EM.

But of course, in SR the relationship between electric and magnetic fields varies depending on the frame of reference. Vacuum permittivity and permeability should not vary but within media the permittivity and permeability values are no longer constants.

Could it be that permeability and permittivity of space also accounts for matter. Or does it only hold true for charge or EM?

You could put it this way: a charge causes a local anomaly to form in the space around it where permittivity and permeability values are profoundly modified. That means that the passage of light and other types of EM fluctuations are strongly affected by the presence of the charge. One interpretation of matter is that it consists of a system of 2 or more charges in mutual motion where the flow of the energy inherent in the EM fluctuations is stable, persistent and localized.

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## What is permeability of space?

Permeability of space refers to the ability of matter to pass through a given space or medium. It is a measure of how easily substances can move or flow through a particular space.

## How is permeability of space measured?

Permeability of space is typically measured using a unit called the permeability constant, which is denoted by the symbol μ. This constant is used to calculate the permeability of a given material or medium.

## What factors affect the permeability of space?

The permeability of space can be affected by a variety of factors such as the density and temperature of the medium, the size and shape of particles within the medium, and the strength of the magnetic field in the space.

## Why is understanding permeability of space important?

Understanding permeability of space is important in a variety of scientific fields, including geology, engineering, and physics. It allows us to better understand how substances move and interact in different environments and can also help us predict and control the behavior of materials.

## How does permeability of space relate to other physical properties?

Permeability of space is closely related to other physical properties such as porosity, which is the measure of empty space within a material, and viscosity, which is the measure of a material's resistance to flow. These properties work together to determine how substances move through a given space or medium.

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