I have been watching a lot of videos of the double slit experiment and trying to wrap my head around it. I found examples of where the experiment has been done, however the videos cut out and only simulate the effect an observer has on it. I understand that the wave interference pattern collapses when an observer is put into play.
Is there a video that displays the observer effect in comparison to the regular double slit experiment? I would like to see how observing the particles before and after they go through the slit changes the resulting patterns.
Follow up question:
I watched this video https://www.youtube.com/watch?v=Iuv6hY6zsd0
This video demonstrates the interference pattern created by sunlight in a box. I understand that this is how light behaves (photons? Particles? I am not sure ...)
Question: would it be possible to do this experiment, and somehow "measure" the light before or after it goes through the slits, to create the pattern that is created when observing?
And if not, why is that?