Recommended · for beginners
Antenna Fundamentals 1 Propagation
Why people recommend it
A Canadian military video explaining how a dipole antenna radiates, offered as an animated way to picture resonance and the fields around a wire.
Watch for: the first of several parts; start here
In their words
If that sounds too abstract, you could look at a more detailed/animated explanation; the bouncing back and forth of the electrons in the antenna/wire in that video are the resonant waves.
got trolled too much this week on electronics.stackexchange.com, Jan 2015. CC BY-SA.