1. Introduction to Electromagnetic Radiation and Optics

6. Radio transmition diagram

18. Electrostatics

19. Electrostatics Magnetostatics Electromagnetism
is the branch of science that deals with the phenomena arising from stationary or slow-moving electric charges.
Magnetostatics
is the study of static magnetic fields. In electrostatics, the charges are stationary, whereas here, the currents are steady or dc(direct current).
Electromagnetism
is the physics of the electromagnetic field, a field that exerts a force on charged particles and is affected by the presence and motion of such particles.

20. The History of Electricity