Relative Permitivity of Black Paint | Hi Thank You!

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Discussion Overview

The discussion revolves around the relative permittivity of black paint, including inquiries about its values, related properties such as permeability and conductivity, and the context in which these values are needed, specifically for modeling electromagnetic wave propagation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the relative permittivity value of black paint.
  • Another participant humorously suggests the value is 42, referencing a cultural source.
  • There is a request for sources of information regarding the permittivity of black paint.
  • Some participants note that the values for relative permittivity, permeability, conductivity, and magnetic loss may not be readily available and suggest that measurements might be necessary.
  • Participants highlight that different types of black paint may have varying properties, prompting a question about which specific type is of interest.
  • One participant expresses skepticism about the relevance of the paint's permittivity for modeling electromagnetic wave propagation, while another participant seeks clarification on the modeling context.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the availability of permittivity values for black paint, with some suggesting that such values may not exist and others indicating the need for specific types of paint. The relevance of permittivity in the context of electromagnetic wave modeling is also debated.

Contextual Notes

Participants mention the need for additional properties beyond permittivity, such as permeability and conductivity, which may further complicate the inquiry. There is also an indication that the specific type of black paint could significantly influence the properties being discussed.

Who May Find This Useful

This discussion may be useful for individuals interested in the electromagnetic properties of materials, particularly in the context of modeling and experimental applications involving black paint.

KKKISHORE
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Hi i want to know what is the relative permitivity value of black paint. Thank you.
 
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42. You're welcome.
 
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berkeman said:
42. You're welcome.
Hi Berkeman,

From which source were you able to obtain this information. Could you please share it with me. Thanks
 
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berkeman said:
https://en.wikipedia.org/wiki/The_Hitchhiker's_Guide_to_the_Galaxy_(film)And I was kidding.

What sources have you found for reseaching your question? I seems like Google would probably be helpful, no?
Hi I have used google but was not able to find the values. Also i need relative permability, conductivity values, and magnetic loss values for black paint.
 
It depends on the paint. And I doubt you'll find values for most types of paint, you'll probably have to measure it yourself.

Why do you need this?
 
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mfb said:
It depends on the paint. And I doubt you'll find values for most types of paint, you'll probably have to measure it yourself.

Why do you need this?
Hi i need this for modelling
 
You’re not very communicative...
 
  • #10
marcusl said:
You’re not very communicative...
I want to model how the electromagnetic waves propagates within a box with the inside wall painted black.
 
  • #11
It is unlikely that the permittivity of the paint matters for that, but your description is still quite vague.
 

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