Light is energy that can take on many forms. Radio waves, microwaves, infrared, visible, ultraviolet, X-ray and gamma radiation are all different forms of light. (Illustration: NASA/CXC/M.Weiss)
The electromagnetic spectrum. Radio waves, microwaves, IR radiation, visible light, ultra-violet, X-rays, Gamma rays.
A Look At The Radio Spectrum Infographic
This shoulder mounted device shoots drones with radio waves until they lose signal and come down.
Exploring Universe: This image from the Very Large Baseline Array (VLBA) shows what the galaxy M33 would look like if you could see in radio waves.
NASA: Tour of the Electromagnetic Spectrum. A good introductory series of 8 videos (total 30min) discussing each type of wave length. (If you start the 1st one, the next video clip should auto start.)
Great graphics for explaining radio waves.
Voice training for radio
Freq Show: Raspberry Pi RTL-SDR Scanner See what's in the radio waves around you using software-defined radio and a Raspberry Pi!