How Do Diffraction and Interference Affect Microscopes and Telescopes?

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Discussion Overview

The discussion centers on the effects of diffraction and interference in the context of microscopes and telescopes, exploring how these phenomena influence the performance and resolution of these optical instruments.

Discussion Character

  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions how diffraction occurs in microscopes while interference is noted in telescopes.
  • Another participant suggests that both diffraction and interference are present in both microscopes and telescopes, indicating a lack of clarity in the original question.
  • A further contribution discusses the concept of 'diffraction limit' in telescopes and introduces the idea of interference in the context of multiple telescope arrays.
  • It is proposed that all optical phenomena can be considered as diffraction, with interference being a specific case involving a limited number of coherent sources, which may simplify mathematical analysis.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between diffraction and interference, with no consensus reached on their specific roles in microscopes versus telescopes.

Contextual Notes

There are unresolved assumptions regarding the definitions of diffraction and interference as they apply to different optical systems, and the discussion does not clarify the mathematical distinctions between the two phenomena.

HNM
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How in microscope there is a phenomena of differaction, and in case of telescope there is interference of light happens ?
 
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Diffraction and interference are related concepts, and you have both in both tools (and everywhere else where light is propagating).
I am not sure what exactly you are asking.
 
thanks
 
HNM said:
How in microscope there is a phenomena of differaction, and in case of telescope there is interference of light happens ?

The normal terminology for the limit of resolution of a telescope is 'diffraction limit'. I wonder whether you are bringing in the idea of interference in the context of multiple telescope arrays.

'Everything' is diffraction, when you get down to it. Interference is a simple example of diffraction where a finite number of small coherent sources are involved. The Maths involved is usually somewhat simpler when you can treat a problem in terms of interference as you are Summing a small number of discrete sources rather than Integrating over a continuous aperture, when analysing diffraction.
 

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