Www Radio Luzak Jcom Pl How Does A Radio Transmitter Work?

How does a radio transmitter work? - www radio luzak jcom pl

I built a simple low-power AM radio transmitter for a scientific project: http://www.sciencebuddies.org/science-fa ...
I have this to work, but I do not know how it works. if you can, please explain in relatively simple. Thank you very much!