What is the primary characteristic of electromagnetic radiation?

Electromagnetic radiation is defined by its ability to carry energy while traveling in waves. This characteristic is fundamental to understanding various forms of electromagnetic radiation, such as visible light, radio waves, microwaves, and X-rays. Unlike sound, which requires a medium such as air or water to propagate, electromagnetic radiation can travel through the vacuum of space, which further highlights its wave nature and energy-carrying capability.

This ability to propagate without a medium and carry energy is crucial for many applications, including communication technologies, medical imaging, and understanding fundamental physical phenomena. Understanding this aspect of electromagnetic radiation lays the foundation for exploring its various wavelengths and frequencies, each associated with different applications and properties in the scientific field.