# Dielectric Constant Chart of Gases

• Symmetry777
In summary, dielectric materials are electrical insulators that can be polarized by an applied electric field, while magnetic shields are used to contain magnetic fields. Their properties and uses are different and unrelated.
Symmetry777
Is there a creditable chart out there - on the dielectric constant of gases? What is the dielectric constant of Sulfur hexafluoride (SF6) compared to other gases or other gases in a vacuum?

Thank You

CRC Handbook good enough for you?

Symmetry777
Symmetry777 said:
What is the dielectric constant of Sulfur hexafluoride (SF6) compared to other gases or other gases in a vacuum?
Why do you want to know? As concerns applications, dielectric constant of SF6 is unimportant. Important is its' dielectric strenght.

Symmetry777
You wrote, “Why do you want to know?”

Looking for the best “Electromagnetic shielding”

Looking for the best way to contain a magnetic field.

Thank You

Symmetry777 said:
a magnetic field.
And dielectric constant has what to do with magnetic fields?

Symmetry777 said:
You wrote, “Why do you want to know?”

Looking for the best “Electromagnetic shielding”

Looking for the best way to contain a magnetic field.

Thank You
dielectric huh? Well then, to quote The Princess Bride, "I don't think that word means what you think it means".

A dielectric material (dielectric for short) is an electrical insulator that can be polarized by an applied electric field. When a dielectric is placed in an electric field, electric charges do not flow through the material as they do in a conductor.

Thanks for helping me out with comparing and contrasting dielectric materials to magnetic shields.

You are quite welcome.

## 1. What is a dielectric constant?

A dielectric constant, also known as relative permittivity, is a measure of a material's ability to store electrical energy in an electric field. It is the ratio of the electric flux density in a vacuum to the electric flux density in the material.

## 2. Why is the dielectric constant important?

The dielectric constant is important because it affects the behavior of electric fields in materials. It is used to calculate the capacitance of a material, which is essential in designing electronic circuits and determining the performance of insulating materials.

## 3. How is the dielectric constant measured?

The dielectric constant is typically measured using a parallel plate capacitor, where the material being tested is placed between two conducting plates. The capacitance of the capacitor is then measured with and without the material present, and the dielectric constant is calculated using the ratio of the two capacitance values.

## 4. What is the Dielectric Constant Chart of Gases?

The Dielectric Constant Chart of Gases is a table that lists the dielectric constants of various gases at different temperatures and pressures. It is a valuable resource for engineers and scientists who need to know the dielectric properties of gases for their research or applications.

## 5. How does the dielectric constant of a gas vary with temperature and pressure?

The dielectric constant of a gas typically decreases with increasing temperature and increases with increasing pressure. This is because changes in temperature and pressure affect the density and molecular structure of the gas, which in turn affects its ability to store electrical energy. However, the exact relationship between dielectric constant, temperature, and pressure can vary for different gases.

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