Electromagnetic waves can travel through mediums, but they do not require a medium to travel
Electromagnetic waves consist of varying fields
The two fields are perpendicular to each other, and to the direction of motion
Both the magnetic and the electric fields have the same frequency
In a vacuum, electromagnetic waves travel at 2.998 x \(10^8\) \(ms^-1\)
The direction of the waves is unaffected by the magnetic and electric fields
Because thy are transverse, electromagnetic waves can be polrised, and can interfere with each other
The electromagnetic spectrum can be broken up into 8 different categories of waves