This 90-minute lecture focuses on magnetism. Muller begins with a simple review of magnetism. He takes questions as they arise, almost immediately after class begins, including questions about MRIs, strobe lights, black lights, stereo headphones. It’s clear that students can ask any questions they wish about physics during this time. In his answers, Muller often refers to upcoming lectures, and provides concrete examples. For instance, in his explanation about black lights, he explains how the advertising slogan “whiter than white” can work (a chemical in cloth that glows in ultraviolet light). Muller is careful to repeat questions for the audience. After the ten-minute question and answer session is over, he turns to the details of magnetism. The major point, which he repeats throughout the lecture, is that moving electrons create magnetism. He makes a point to identify those things which he expects students to know: solenoid, generator (“A key physical concept”), dynamo, transformer (“You need to know how a transformer works”). He also explains how a cathode ray tube works, why European TVs seem to flicker, how electric toothbrushes get charged, and so on. He refers to string theory, to the theory of relativity, and to the process of scientific discovery. He explains magnetic levitation and why it is not necessarily a cost-effective transportation method, as in high-speed levitated trains. Throughout the lecture, Muller uses a number of demonstrations that have been set up on three different tables. He uses all the boards to draw simple and clear diagrams of the processes he is describing. Muller works without obvious notes. He clearly expects students to have done the reading, and refers to topics in the textbook. He ends with a very interesting demonstration of how cooling a ring increases its magnetic properties.