How see through the glass + reflection at same time

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    Glass Reflection Time
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Discussion Overview

The discussion revolves around the phenomenon of seeing reflections in glass windows during different lighting conditions, specifically comparing daytime and nighttime visibility. Participants explore both quantum mechanics and classical optics to explain this observation.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant describes the observation of reflections in glass windows during the day and night, seeking a quantum mechanical explanation.
  • Another participant suggests that Richard Feynman's book "QED: The strange theory of light and matter" may provide insights into the question.
  • A different participant challenges the need for a quantum explanation, arguing that classical optics, specifically the Fresnel equations, can account for the observed phenomena.
  • Another participant draws a parallel between the visibility of stars during the day and the reflection phenomenon, implying a similar underlying reason.
  • One participant acknowledges the classical explanation but expresses a desire to understand the quantum perspective, indicating an interest in Feynman's work.

Areas of Agreement / Disagreement

Participants express differing views on whether a quantum mechanical explanation is necessary, with some advocating for classical optics as sufficient. The discussion remains unresolved regarding the necessity of quantum mechanics in this context.

Contextual Notes

There are references to both classical and quantum explanations, but the discussion does not resolve which framework is more appropriate for understanding the phenomenon. Assumptions about visibility conditions and the nature of light are implicit but not fully articulated.

Who May Find This Useful

Individuals interested in the interplay between quantum mechanics and classical optics, as well as those curious about the visibility of reflections in varying light conditions.

rxrus
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When its day we can kind of see our reflection a little bit and also see outside, when its night we can fully see our reflection in the glass window.
Can someone explain quantum mechanics behind it because i think iv read an article long time ago on it but can't find it anymore.
 
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I don't know what the article you read long ago was, but I do know that you will find the answer to your question in Feynmann's (very layman-friendly) book "QED: The strange theory of light and matter".
 
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rxrus said:
When its day we can kind of see our reflection a little bit and also see outside, when its night we can fully see our reflection in the glass window.
Can someone explain quantum mechanics behind it because i think iv read an article long time ago on it but can't find it anymore.
Why do you think this is a quantum effect? The transmission and reflection can be explained in classical optics by the Fresnel equations. The greater visibility of the reflection against a dark background is not a quantum effect either.
 
No quantum mechanics needed.

Why don't you see the stars during the day? I think the reason is similar.
 
Yes i am aware of classical physics explanation but i wanted to hear quantum physics side of it.
Nugatory i really like Feynman so i will read that book.
 

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