Originally posted by znsho
That's a good one. Are there any Quantum Mechanics persons here? I should like to know more about this experiment and the findings of different ways it might be conducted.
I don't know how serious about that but observations really have some different definitions. Some people stress an interaction with a classical object and others say it is only importan to have a concescious observer. Now of course conciousness isn't easy to define nor to agree and so this last definition is a little bit controverse. But one thing that I think everyone agrees is not talking about God. Cause he has nothing to do with it. That would be mixing up different realms. QM was made by humans and refer to humans only.
Besides actual QM may not be the final word. Actually I think it is not the final word. One simple argument is that the usual QM is linear and physicists knows that linear theories are always a first approximation. So why doesn't everybody works on a non-linear QM. Well cause it is very hard and usual QM has a lot of excellent results. The double slit-experiment being just one of them.
If you want to know more about that stuff on an intuitive matter Feynman and some other guy have a good book on quantum mechanics. This book has the distinctive Feynman brand: a difficult subject is presented in a way that it almos seems natural. I haven't read the whole book but I read something like half of it some time ago and I remember liking it. QM has a lot of litterature available. Some good, some bad but a very worthy read to book is Sakurai's Modern Quantum-Mechanics. It's a bit hard if you aren't trained in maths and physics, actually it is impossible if you aren't and somewhat hard if you are, but is an excellent book.
And it seems that you misunderstood the actual meaning of the double slit experiment. what it shows is the complementary aspects of waves and particles in quantum particles. And by complemntary aspects it means that on the quantum level things aren't waves or particles they are quantum beings that possess both atributes and show each one of them according to is being tested. I think you should start by doing a bit of research on principles, or axioms of quantum-mechanics, and try to understand what they really mean then move on to those famous experiments and delight yourself with this wonderful and crazy world.