I love how Schrödinger brought root minus one into the equation. In my mind's eye, I see this element rotating the wave into another dimension, and then as it progresses, it reappears in the standard dimensional system we're familiar with. It's crazy mathematics being used to predict even crazier properties of the infinitesimal. I'm probably completely out of order seeing the equation like this, but I just see the wave rotating, disappearing altogether, then reappearing again, further down the track, back into our standard view of things.