What is the proportional relationship between wavelength and resolution?

Answer 1

The main way wavelength affects light is it's color. You see, the shorter waves are colors like violet, whereas the longer waves are closer to red. Anything longer than red can not be seen by the human eye, as anything shorter than violet cannot be seen with our eyes.

Answer 2

In "short," yes. But only if you want to illuminate something with very small-scale features, like (magnified) baby's hair. You would see it more sharply under blue light than under longer-wavelength red.

For coarser-featured scenes, which include most every-day things, the wavelength of the illumination source, in itself, doesn't matter nearly as much as the color content of the scene. Example: if a scene has a lot of red in it, it will show up better ("apparent resolution") under red light than under blue light, simply because more of it will respond to the matching red light source. (Overall, most scenes show up best with white, or many wavelengthed, light.)

But something the width of a fine hair or smaller does better under blue light because the size of such things is in the ballpark of visible light's wavelength. For light to illuminate something, its wavelength should be NO LONGER than around one hundredth the width of the smallest feature (e.g., the tiny cracks or dents in a hair.) Here, the shorter the wavelength, the better.

Answer 3

Inverse relationship. As wavelength decreases then resolution increases and vice versa.

Answer 4

rule of thumb 1/2 the wavelength is the resolution