Question

What is the electromagnetic spectrum and what does it tell us about energy waves?

Answer 1

This includes visible light and all radiations.

These waves have both electric and magnetic field vector perpendicular to each other.

In the sense of energy sunlight is a em wave required for photosynthesis:-)

Answer 2

Answer:

Electromagnetic energy travels in waves and spans a broad spectrum from very long radio waves to very short gamma rays. The human eye can only detect only a small portion of this spectrum called visible light. A radio detects a different portion of the spectrum, and an x-ray machine uses yet another portion.