Color of central circle in Newton's rings

  • Context: Undergrad 
  • Thread starter Thread starter justawebuser
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    Circle Color Rings
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Discussion Overview

The discussion revolves around the differing colors of the central circle in Newton's rings observed in transmission and reflection cases. Participants explore the underlying reasons for these differences, focusing on the phenomena of light interference and phase changes.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant notes that the brightness of the central circle in the transmission case is due to the amount of light received, contrasting with the reflection case where less light is present.
  • Another participant questions the understanding of how the rings are produced, suggesting that a deeper comprehension of the mechanism is necessary for further discussion.
  • A different participant points to the importance of phase reversals in determining the appearance of the rings, indicating that these circumstances may affect the observed colors.
  • One participant emphasizes the need to understand the questioner's perspective on Newton's rings to provide a more tailored response, implying that assumptions about the phenomenon may vary.

Areas of Agreement / Disagreement

The discussion does not reach a consensus, as participants express differing views on the mechanisms behind the color differences and the understanding of the phenomenon itself.

Contextual Notes

Participants have not fully clarified their assumptions regarding the production of the rings or the conditions under which phase reversals occur, leaving some aspects of the discussion unresolved.

justawebuser
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Hello guys ,
Can someone explain me why color of central circle in transmission case is bright whereas it is dark for the reflection case?
Thanks a lot,
 
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Because you get a lot of light coming from there in one case and not the other.
 
Do you understand why rings are produced?
 
Last edited by a moderator:
Have a look at the circumstances when sharp phase reversals do or don't take place.
 
@justawebuser: in order to best answer your question, we need to know how you are thinking about Newton's rings in the first place.
It is not obvious how the issue is a problem for you.
i.e.
why would you expect matters to be otherwise?
how do you think the rings are made in the first place?

Without some idea of how you think, we are unlikely to be able to help you.
 

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