"Light waves are radio waves but radio waves may not be light waves."
By Sport Pilot

Frequency is the number of complete cycles in one second.

                                  Factor

  1 KILOHERTZ = 10 to the 3rd power   cycles per second

  1 MEGAHERTZ = 10 to the 6th power   cycles per second

  1 GIGAHERTZ = 10 to the 9th power  cycles per second

  1 TERAHERTZ = 10 to the 12th power  cycles per second