Dielectric Constant Chart of Gases

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Discussion Overview

The discussion centers around the dielectric constant of gases, specifically seeking a credible chart for comparison, with a focus on sulfur hexafluoride (SF6) and its applications in electromagnetic shielding and magnetic field containment.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant inquires about credible charts for the dielectric constant of gases, particularly SF6, and its comparison to other gases or a vacuum.
  • Another participant suggests the CRC Handbook as a potential resource for this information.
  • A different participant questions the relevance of the dielectric constant of SF6 for applications, emphasizing the importance of its dielectric strength instead.
  • One participant expresses a specific interest in electromagnetic shielding and the containment of magnetic fields, seeking clarification on the relationship between dielectric constants and magnetic fields.
  • Another participant challenges the understanding of the term "dielectric" in the context of magnetic fields, suggesting a potential misunderstanding.
  • A further contribution explains that a dielectric material can be polarized by an electric field and contrasts dielectric materials with magnetic shields.

Areas of Agreement / Disagreement

The discussion features multiple competing views regarding the relevance of dielectric constants in the context of electromagnetic shielding and magnetic field containment. There is no consensus on the importance of dielectric constants versus dielectric strength.

Contextual Notes

Participants express varying assumptions about the relationship between dielectric constants and magnetic fields, indicating a need for clarification on definitions and applications.

Symmetry777
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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
 
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CRC Handbook good enough for you?
 
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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.
 
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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.
 

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