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![](https://streaming.uvm.edu/cc-content/themes/overcast/assets/file-audio-regular.png)
Deriving Numerical Aperture = N.A.
The geometries of diffraction patterns must match the geometries of acceptance angle.
![](https://streaming.uvm.edu/cc-content/themes/overcast/assets/file-audio-regular.png)
Condenser N.A. must at least match that of the objective to realize full resolution.
![](https://streaming.uvm.edu/cc-content/themes/overcast/assets/file-audio-regular.png)
Complex frequency-based information can be decomposed into combinations of simple waveforms.
![](https://streaming.uvm.edu/cc-content/themes/overcast/assets/file-audio-regular.png)
Object detail vs. acceptance angle
The finer the spatial detail in an object the wider the diffraction angle - easily seen with a laser pointer and a fine grating.