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

[stackprogramer]

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!

 

[Bystander]

https://www.physicsforums.com/search/2083989/?q=wien%27s+law&o=relevance

 

[stackprogramer]

thanks,ok,i will read your link.my question is has it exclusion in nature?

 

[stackprogramer]

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

 

[mfb]

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.

 

[stackprogramer]

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"

 

[mfb]

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.