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Author Topic: Resolution of circular apertures  (Read 3515 times)
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on: May 23, 2010, 09:50:23 pm » posted from:Uberaba,Minas Gerais,Brazil

This following applet is Resolution of circular apertures
Created by prof Hwang Modified by Ahmed
Original project Resolution of circular apertures

The ability of optical systems to distinguish between closely spaced objects is limited because the wave nature of light.
Consider two light sources far (distance L) from a cirsular aperature with diameter D.
Because of diffraction, each source is imaged as a bright central region flanked by weaker bright and dark bands. What is observed is the sum of two diffraction patterns.
If the two sources are far enough apart to ensure that their central maximum do not overlap, their image can be distinguished and are said to be resolved.
The following simulation let you play several parameters to get the feeling of it.
You can play with "distance between the two sources, Diameter of the optics aperature and distances from source and optics aperature.

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Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
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  • Post questions to be asked to help students to think, to explore.
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Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!

* Resolution of circular apertures.gif (32.01 KB, 557x643 - viewed 401 times.)
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