What level of the atmosphere is electromagnetic energy reflected
ionosphere
What type of electromagnetic waves travel far distances
Low frequency ground waves
What is required for a radio system that is both transmitting and receiving with antenna’s
all antenna need to have the same polarization so they are most effective
What processes are required for the long distance transmission of radio waves
Reflection and refraction
What happens when two radio waves arrive at the same point in time and space
interference
What is polarization
Direction of the electric component of the field. “which way it faces”