Interacting in this context meaning physically manipulating the particle.
So things like the quantum eraser experiment are a good example. If you entangle the original particle with another particle, and you are able to measure that other particle (even if you don’t actually do so) the waveform collapses and no interference pattern occurs.
Basically, the mere existence of information about the path the original particle takes is enough to collapse the wave function.
None of which is remotely intuitive and hurts a little bit to think about.
Venus_Ziegenfalle@feddit.org 4 days ago
Image