Where do television waves come from?
where do radio waves come from?

Radio waves are a type of electromagnetic radiation with a very long wavelength that are emitted by sources that include astronomical objects and television and radio transmitters. Radio waves, the longest wavelengths in the electromagnetic spectrum, typically carry radio, television and cellphone signals.

Sound energy is produced when an object vibrates. examples are 1- a balloon popping2-a whistle3- a waterfall