Can we separate heat from light?

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Discussion Overview

The discussion revolves around the question of whether it is possible to separate heat from light, specifically focusing on the distinction between visible light and the portion of electromagnetic radiation that contributes to heating objects. The scope includes conceptual clarification and technical explanations related to electromagnetic radiation.

Discussion Character

  • Conceptual clarification, Technical explanation, Debate/contested

Main Points Raised

  • One participant suggests that windows can transmit visible light while blocking infrared radiation.
  • Another participant points out that infrared is a form of electromagnetic radiation, similar to visible light.
  • A different participant introduces the concept of a cold mirror, which reflects light while allowing heat to pass through, as a method to separate heat from light.
  • One participant emphasizes the need for clarity regarding the term "heat," explaining that heat is not a substance but rather energy transferred through various means, including electromagnetic radiation.
  • A later reply acknowledges the initial confusion and confirms that cold mirrors align with the participant's inquiry about separating visible light from heating radiation.

Areas of Agreement / Disagreement

Participants express differing views on the definition and nature of heat, with some agreeing on the functionality of cold mirrors while others emphasize the conceptual complexities involved in separating heat from light. The discussion remains unresolved regarding the broader implications of these definitions.

Contextual Notes

There are limitations in the definitions of heat and light, as well as the assumptions about the mechanisms of energy transfer. The discussion does not resolve these complexities.

ciurio
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Hello

The question is: it possible to separate heat from light?


(If its the wrong section of forum please direct me to more
proper one)
 
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I'm not sure I know what you mean, but windows transmit visible light while blocking IR.
 
Uh ... infrared is electromagnetic radiation. Just like light.
 
ciurio said:
Hello

The question is: it possible to separate heat from light?


(If its the wrong section of forum please direct me to more
proper one)


Yes. One way is called a cold mirror. It's a filter that reflects light but passes heat. You can buy them.
 
You have to be careful by what you mean when you say "heat". Heat is not a substance that is transferred between different objects. For example, when you stand near a fire, the electromagnetic radiation from the flames interact with your body and give up energy to you. This is one form of "heating". The light does not also contain some substance called "heat" that it delivers to you.

You also receive energy from the convection, but that's not what you're asking about.
 
Sorry for not being clear ,from your answers i understood i should've ask about splitting
visible light and portion of electromagnetic radiation that is responsible for heating objects.
Cold mirrors seems to be exactly what i was wondering about.
Thank you for replies.
 

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