Wide complex tachycardia is a general term that refers to conditions that cause an unusually fast heart rate and a particular pattern on an EKG. Tachycardia is when your heart beats unusually fast, ...
Last year, onlookers observed a startling site on China’s Qiantang River: waves forming a grid-like pattern. Dubbed the “matrix tide,” this complex wave pattern was caused by the river’s famed tidal ...