RT Book, Section A1 Zimmerman, Franklin H. SR Print(0) ID 1200099959 T1 Vectors, Activation, Axis, and Rotation T2 ECG Core Curriculum YR 2023 FD 2023 PB McGraw Hill Education PP New York, NY SN 9780071785211 LK accessmedicine.mhmedical.com/content.aspx?aid=1200099959 RD 2024/10/08 AB Thus far we’ve learned the genesis of electrical current in cardiac tissue and how to record their movements on an electrocardiograph. Now it’s time to understand why these funny little squiggles look the way they do in health and disease. To do so, we need to be familiar with the concept of vectors.