Get more lessons like this at http://www.MathTutorDVD.com In this lesson, we review core physics concepts involving electric fields, magnetic fields, relativity, and quantum mechanics. Each of these phenomena are explained in simple terms and with practical examples. We discuss the concept of how magnetic and electric fields are very similar to each other and how modern physics has unified them into a single theory. We give an introduction to time dilation in special relativity along with quantized energy levels in quantum mechanics.