The audio file titled "001b - Electromagnetism" initiates with the comforting strumming of a guitar, creating an inviting ambiance. The crisp melody flows smoothly, setting a rhythmic foundation for the information to come. The presenter then begins to discuss the concept of electromagnetism, interweaving the topic with the theme of electric guitars. The presenter elaborates on the relation between the electric guitar and electromagnetism. He explains how the vibrations of the guitar strings interact with the magnetic field of the electric guitar's pickups. This interaction converts the string's vibrations into an electrical signal, which can be amplified and projected through speakers. The guitar, in this instance, serves as a practical and engaging example to illustrate the principles of electromagnetism. As the audio progresses, the concept of electromagnetism is further broken down into easily digestible parts. The presenter uses the analogy of musical scales to explain the spect