More Wireless Basics

What is a wireless signal?

Wireless signals are important because they can transfer information - audio, video, our voices, data -- without the use of wires, and that makes them very useful.

Wireless signals are electromagnetic waves traveling through the air. These are formed when electric energy travels through a piece of metal - for example, a wire or antenna - and waves are formed around that piece of metal. These waves can travel some distance depending on the strength of that energy.

For more on how electromagnetic signals work, check the #External Resources section at the end of this document.