Radio is the wireless transmission of signals through free space by electromagnetic radiation of a frequency significantly below that of visible light, in the radio frequency range, from about 30 kHz to 300 GHz. These waves are called radio waves. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space.
- ↑ As seen in The Kid Super Power Hour with Shazam!
- ↑ As seen in Shazam! and The Kid Super Power Hour with Shazam!
- ↑ As seen in The Balloon People.