Maxwell's theory, known as electromagnetic theory, unified electricity, magnetism, and light. He showed that light is a form of electromagnetic radiation, which consists of oscillating electric and magnetic fields that are perpendicular to each other and to the direction of propagation.
However, it's important to clarify that Maxwell's theory describes light as an electromagnetic wave, not two separate waves. It's a single wave with both electric and magnetic components oscillating perpendicularly to each other.