The tutorial is organized in sections based on a recommended "Method" of ECG interpretation . Each section provides some didactic teaching points, often linked to illustrations, and an interactive quiz. Beginning students should first go through the sections in the order in which they are presented. Others may chose to explore topics of interest in any order they wish. The ECG's range from the sublime to the ridiculous, from simplicity to complexity, and from boring to fascinating. It is hoped that students will be left with some of the love of electrocardiography shared by Dr. Lindsay.
A quantum master equation is a generalization of the idea of a master equation. Rather than just a system of differential equations for a set of probabilities (which only constitutes the diagonal elements of a density matrix ), quantum master equations are differential equations for the entire density matrix, including off-diagonal elements. A density matrix with only diagonal elements can be modeled as a classical random process, therefore such an "ordinary" master equation is considered classical. Off-diagonal elements represent quantum coherence which is a physical characteristic that is intrinsically quantum mechanical.