Fringes observed between the fingers

[sweet springs]

In Feynman lectures on physics 26 Optics 5
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Then put two fingers in front of one eye, so as to look through the crack, and squeeze the light to zero very gently. ... Also you will notice, if you are very careful, side maxima, a lot of fringes along the edges too. Furthermore, the whole thing is colored.
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I observe these fringes looking sun light, not directly but through white curtain. I wonder why I can see fringes because sun light has continuous spectra so positions of fringes are different according to wave length of light components. I assume human eye structure sensing three basic colors may play a role but I am not confident about it at all. Your teachings is appreciated.

 

[sweet springs]

Well, I am afraid I do not have an appropriate supplementation. If light is monochromatic it's OK. I wonder why even continuous spectrum light I can see fringes. I appreciate your asking or request what kind of information you need for clarification and teachings. Thanks.

 

[Ibix]

Well, if you put in white light and then diffract it and look at a place where around 700nm light would be at or near a minimum, is it going to be white? Or the same colour if you look where ~550nm light will be at a minimum?

 

[sweet springs]

Thanks. I cannot distinguish colors fringe by fringe. Maybe my eyes do not work well.
I should appreciate if someone knows report or article on interference of continuous spectrum light as mentioned for solar light as https://en.wikipedia.org/wiki/Sunlight#/media/File:Solar_spectrum_en.svg.

 

[Ibix]

You can easily enough google for "white light fringes". The first hit on Google for me was this one: https://upload.wikimedia.org/wikipedia/commons/5/5a/Weißlichtinterferogramm.jpg
That's pretty much what I'd expect to see. The second hit is an explanatory diagram: https://physicsmax.com/wp-content/uploads/2014/08/1411.jpg

 

[sweet springs]

Thanks a lot. I really enjoyed the figures.
The story is comprised of discrete wave light. I wish I could read a scenario for continuous spectrum for completion.
Thanks again.