Shortest wavelenght emmited by a black body

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Discussion Overview

The discussion revolves around the shortest and longest wavelengths emitted by a black body, exploring both experimental observations and theoretical limits. Participants examine the relationship between temperature and wavelength in the context of blackbody radiation.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant inquires about the shortest and longest wavelengths observed for a black body and the theoretical limits associated with them.
  • Another participant notes that the temperature of the black body significantly influences the wavelengths emitted.
  • Referring to the Planck formula, a participant states that there is no shortest wavelength since the spectrum is nonzero for arbitrarily short wavelengths, although the probability of observing such wavelengths is very small.
  • Another participant agrees with the previous point, emphasizing that detection capabilities play a crucial role in observing long and short wavelengths, with specific challenges associated with detecting high-energy waves.
  • A participant expresses gratitude for the insights shared and acknowledges the dependence of black body radiation on temperature while seeking clarification on the existence of limits.

Areas of Agreement / Disagreement

Participants generally agree that temperature is a key factor in determining the wavelengths emitted by a black body, but there is no consensus on the existence of limits to these wavelengths, as different viewpoints are presented regarding detection capabilities and theoretical considerations.

Contextual Notes

The discussion highlights the dependence on detection abilities and the implications of the Planck formula, but does not resolve the question of limits to wavelengths.

AkInfinity
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what is the shortest and longest wavelength that has experimentally observed for a black body?

Additoinally what are the theoretical limits?

I know it's a hard one,
 
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all depends on the temperature of the blackbody...
 
Referring to the Planck formula for blackbody radiation there is no shortest wavelength, the spectrum u(λ) is nonzero for arbitrary short wavelength λ > 0. But of course the probability to observe arbitary short wavelengths is arbitrary small.
 
I agree with Tom, I would have thought it all depends on our detection abilities.
To detect a very long wave we would require the detector to be at a temperature less than that of the source. To detect a very short wave we would require a detector that would somehow interact with the extremely high energy waves, now this is tricky since they would 'fly' right through.
Hence experimental observations of long/short waves depends simply on are ability to detect them... I feel like I am just rewording Tom. :)
 
Thank you, yes what I was looking four.

of course blcack body depends on temperature however my question was if there whas a limit to it. Ineterestingly enough I found the answer to my question thanks
 

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