This is a video of a Chladni plate experiment in which sand resonates to different frequencies to reveal a particular frequency& SECRET PATTERN. And we all love secret patterns here, right? Think of it as a special door knock.
anna-vital: “ How To Think Visually Using Visual Analogies Most research in cognitive science explores how we see things but little research is done on how we understand what we see. Understanding is the ultimate test of how good your visualization.