Blackbody in photoelectric effect

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Discussion Overview

The discussion revolves around the application of blackbody radiation in the context of the photoelectric effect, exploring whether a blackbody can serve as a metal target for electron emission and the underlying principles involved.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • Some participants question whether any electron will be emitted when using a blackbody as a metal target in a photoelectric effect experiment.
  • Others highlight the distinction between blackbody radiation, which involves the emission of electromagnetic spectrum from heat, and the photoelectric effect, which involves electron emission due to light absorption.
  • A participant inquires about the behavior of the radiation versus wavelength curve in relation to the threshold frequency and its implications for the photoelectric effect.
  • There is a suggestion that the excitation of atoms in a metal (including black bodies) by electromagnetic waves could lead to electron emission, similar to the photoelectric effect, but uncertainty remains about the applicability of this concept to black bodies.
  • Another participant emphasizes that a blackbody does not have to be a metal and questions the relevance of the material's properties in the context of the photoelectric effect.
  • Concerns are raised about the complexity of the photoemission process and the need for a clearer understanding of the underlying atomic properties.

Areas of Agreement / Disagreement

The discussion remains unresolved, with multiple competing views on the relationship between blackbody radiation and the photoelectric effect, as well as the nature of electron emission in this context.

Contextual Notes

Participants express uncertainty regarding the definitions and properties of blackbodies versus metals, and the implications for the photoelectric effect are not fully clarified. There are also references to the complexity of atomic behavior in solid materials that may not be fully addressed.

hasanhabibul
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any electron will be emitted if i use a black body as a metal target in photoelectric effect experimant and why??
 
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hasanhabibul said:
any electron will be emitted if i use a black body as a metal target in photoelectric effect experimant and why??

Why are you mixing these things? A blackbody, emits EM spectrum from heat. Why is this being mixed with something that emits electrons via absorption of light?

Zz.
 
why radiation vs wavelength curve of plack radition formula become lower after reaching a certain amount of energy?is it related to threshold frequency or anything else please explain me.
 
hasanhabibul said:
why radiation vs wavelength curve of plack radition formula become lower after reaching a certain amount of energy?is it related to threshold frequency or anything else please explain me.

Not until you answer my question.

Zz.
 
when emw incident on a metal(including black body)..the atoms of the metal gains the energy of hmeu..and become excited and try to go the upper level continously.it seems as if there creates a random movemnet of electron inside the atom so i think but not sure a lot of probability to get off a electron from the metal..and creates current like photoelectric effect.so i asked u if i used a black body as a metal target the same thing will happen or not??and u said not..but i am still unsure.please explain me.
 
hasanhabibul said:
when emw incident on a metal(including black body)..the atoms of the metal gains the energy of hmeu..and become excited and try to go the upper level continously.it seems as if there creates a random movemnet of electron inside the atom so i think but not sure a lot of probability to get off a electron from the metal..and creates current like photoelectric effect.so i asked u if i used a black body as a metal target the same thing will happen or not??and u said not..but i am still unsure.please explain me.

A "blackbody" need not be a metal! The sun is often considered as a 'blackbody' emitter. Do you think it is a "metal"?

If you wish to know about the photoelectric effect, ask about the photoelectric effect. If it is a metal, then it will obey what metals do. What you use that metal for (either as a photocathode or as the material of your "blackbody") is irrelevant since the property of that material is already defined.

BTW, you might want to read the FAQ first regarding what happens with the property of "individual atoms" when they form a solid. The properties such as photoelectric effect, has nothing to do with the property of individual atoms. The process of photoemission is more complicated than what you are describing here, and I have no idea if I should go into it since I have no clue on your background.

Zz.
 
dont be afraid please explain me the whole thing
 
It's not a matter of being afraid. It's a matter of wasting my time.

Zz.
 

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