The class started with a brief review of static electrical theory which was covered in the last few classes. The definition of a charged object and the various ways to charge a substance was discussed. Coulomb's law was then discussed in detail and the mathematical equation written. Each item in the formula was explained and then the electrical force compared to the gravitational force, the formulas being very much alike. The strength difference between the two was stressed, with hydrogen atoms being used as the example to show the gravitational force strength compared to the electrical force strength.