Is Wien's Law Applicable to All Materials and Conditions?

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Discussion Overview

The discussion centers on Wien's Law and its applicability to various materials and conditions, particularly in relation to thermal radiation and the behavior of materials at temperatures above absolute zero.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant questions whether Wien's Law applies universally to all elements, products, and conditions, specifically above absolute zero.
  • Another participant inquires if there are any exclusions in nature regarding Wien's displacement law, particularly if any materials do not radiate waves at temperatures above absolute zero.
  • A later reply asserts that no such material exists that does not radiate at temperatures above absolute zero, but notes that some materials may not have a peak frequency proportional to temperature, suggesting a distinction in behavior.
  • Further, a participant mentions that colored materials that are heat-resistant could exhibit deviations from a blackbody spectrum, indicating that nearly no object is a perfect blackbody.

Areas of Agreement / Disagreement

Participants express differing views on the universality of Wien's Law, with some asserting that all materials radiate above absolute zero while others explore the nuances of materials that deviate from ideal blackbody behavior. The discussion remains unresolved regarding the specific conditions and exceptions related to Wien's Law.

Contextual Notes

There are unresolved questions about the definitions of materials and the conditions under which Wien's Law may or may not apply, as well as the implications of deviations from blackbody radiation.

stackprogramer
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wein law talk in temperature upper 0 kelvin the mass have radiate that lenghth wave is λ=b/T
my question is this rule is true for all elements all products and all condition!
wiens_law.gif
 
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https://www.physicsforums.com/search/2083989/?q=wien%27s+law&o=relevance
 
thanks,ok,i will read your link.my question is has it exclusion in nature?
 
has Wien's displacement law exclusion??my mean is is there a material that in upper of 0 kelvin don't radiate any wave from itself,please help,thanks very much
 
stackprogramer said:
my mean is is there a material that in upper of 0 kelvin don't radiate any wave from itself
Such a material does not exist.

There are materials where the position of the peak (as frequency) is not proportional to temperature, but this is a completely different question.

Edit: I merged the two threads.
 
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Such a material does not exist.

There are materials where the position of the peak (as frequency) is not proportional to temperature, but this is a completely different question.
please me introduce these materials,"here are materials where the position of the peak (as frequency) is not proportional to temperature"
 
All colored materials that are heat-resistant enough, for example.
You just need some deviation from a blackbody spectrum, and nearly no object is a perfect blackbody.
 

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