How are electromagnetic waves used in communication and IT?

Mechanical waves and electromagnetic waves are two important ways in which energy is transported in the world around us.

Electromagnetic waves differ from mechanical waves in that from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through the vacuum of space.

Electromagnetic waves play an important role in communication and IT. Radio waves are the most common from of electromagnetic waves that are used for the communication purposes.