Why is it that we have a dozen or so different electromagnetic wave types and yet every one can be used for analog and digital communication?

Question

Hi all: Why is it that we have a dozen or so different electromagnetic wave types and yet every one of them can be used for analog and digital communication?

Thanks!

In: Physics

Answer 1

There’s one type of electromagnetic wave. It’s frequency affects what you’re referring to as “type”. (It also affect how it propagates through matter like air as well as how directional it is.)