Resonance. No, it is not a Tesla-themed Evanescence cover band. Resonance is a physics principle that, to be honest, most people will never need to know to go about their daily lives. So what is all the hubbub about resonance these days? It’s a word that is, even in the watch world, so mysterious and rare that it is heard only once or twice a decade. In this article Joshua Munchow explains how resonance works and why it matters.