Could someone please explain in laymans terms if possible how the process of effecting things by observing them actually works. Perhaps rather pretentiously me and a friend are having a dispute. He is saying its simply a matter of the measuring device bouncing photons or whatever off whatever you are trying to measure (or observe). However I have rather ambitiously considering how ill informed I am , said that this is not the case but the actual act of observation seems to effect the observed without there necessarily being any physical copntact - until you observe it it actually exists in more than one state. So how do you observe these tiny things exactly ?