I meant observed in the sense that you were explaining - where we are trying to find where it is located. Sorry I did not make that clear.
Another question you may be able to answer since it got me thinking - what happens when you observe which slit it goes through (causing it not to show...
My question is - is all light a wave until observed, then wave function collapses and behaves as a particle? This is far fetched (and i don't subscribe to it!), but theoretically could light from a distant object passing through a double slit experiment and exhibiting a particle pattern be...