Answer:
I would say very important. Light is an electromagnetic wave so we would not see without them. We could not get signals and data to our cell phones without a wire connection. We could not do various chemical sensing, remote sensing, medical treatments. We could not warm our food in a microwave oven. The sun could not warm the earth.
Electromagnetic waves are everywhere.
Understanding electromagnetic waves means understanding the entire world that much better. You’ll learn how to literally see things in a new light.
