I just recently watched a video where they were explaining the double slit experiment.
I understand that the interference pattern would be observed if you send photons or electrons one after the other. The conclusion that the author seems to make is that it is as though the particle/packet of energy travels through both the slits after somehow splitting into two.
Has anyone done an experiment where they send just one particle? (And end the experiment) Do you observe two points on the screen in that case or just one?