Electromagnetic waves are a type of wave that consist of oscillating electric and magnetic fields. They are generated by the movement of charged particles and propagate through space at the speed of light. These waves have a wide range of frequencies, from radio waves at the lowest end to gamma rays at the highest end. Electromagnetic waves play a crucial role in various technologies, including communication, radar, medical imaging, and many more. Research in this area involves studying the properties of electromagnetic waves, their interactions with matter, and the development of new applications and technologies based on them.