What do we see if a single ray of white light falls in to our eyes ?

Doesn't it undergo dispersion ?

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    $\begingroup$ Too often I think that would be a really interesting question to answer only to find out that the question has been asked and answered before. Damn! :-) $\endgroup$ – John Rennie Nov 25 '14 at 10:19
  • $\begingroup$ @JohnRennie I couldn't find any mechanism here to know whether a question has been asked before. Slag off ! :-) $\endgroup$ – Vinayak Nov 25 '14 at 10:31
  • $\begingroup$ With 43,573 (at the time of writing) questions on the site it's hard to check whether a new question is a duplicate. Obviously you can search, but even so it's hard to find duplicates. In this case I found the duplicate by accident. I Googled for eye lens chromatic abberation and Google found me the question I've linked. My view would be that if you're in doubt post the question anyway. $\endgroup$ – John Rennie Nov 25 '14 at 10:42
  • $\begingroup$ Aside from being a dupe, your question is ill-formed. There's no such thing as a 'single ray,' nor 'white light' . May I recommend you reword it as "does our eyeball exhibit spectral dispersion?" Even the "what do we see" part doesn't really make sense -- do you know that a bundle of parallel rays focus to a single spot, for example? $\endgroup$ – Carl Witthoft Nov 25 '14 at 13:01
  • $\begingroup$ @JohnRennie interesting that Google found you a misspelled duplicate :-) $\endgroup$ – Carl Witthoft Nov 25 '14 at 14:04