Retina & Diffraction Order-of-Magnitude
This interactive simulator explores Retina & Diffraction in Optics & Light. Order-of-magnitude θ ~ λ/D and cone spacing scale. Use the controls to change the scenario; watch the visualization and any graphs or readouts to connect the model with lectures, labs, and homework.
Who it's for: Suited to beginners and first exposure to the topic. Typical context: Optics & Light.
Key terms
- retina
- diffraction
- retina diffraction limit
- optics
- light
At bright daylight with a ~3 mm pupil and green light, diffraction-limited angular resolution is on the order of 46″ — comparable in order of magnitude to cone spacing on the fovea for some assumptions.
How it works
Explains why resolution is finite even with “perfect” optics: wave optics sets a floor; photoreceptor pitch sets another sampling limit.
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