Many everyday electronics leverage a phenomenon called 'piezoelectricity.' Materials with this property generate an electrical charge under mechanical stress. Piezoelectric crystals, found in cigarette lighters and electric guitar pickups, also serve key roles in medical ultrasound and timekeeping in quartz watches. In essence, a physical action is directly converted into an electrical signal, illustrating how intimately connected the physical and electrical worlds are. Now, what's your favorite unexpected fact about electronics that intrigues or inspires you? Share your insight!