
14. Electromagnetic Waves
Electromagnetic Waves — energy on the move
How electric and magnetic fields combine to carry energy across space.
When electric and magnetic fields interact and change together, they create electromagnetic waves. These waves carry energy through space, even without any material to travel through.
You can picture them as two invisible partners dancing in sync — the electric field moves up and down, while the magnetic field moves side to side, each one creating and sustaining the other.
Depending on their frequency and wavelength, electromagnetic waves can take many forms, from radio waves and microwaves to X-rays and gamma rays. They all travel at the speed of light, but their energy and effects vary dramatically. For example, radio waves are harmless because they carry very low energy, while high-energy waves like gamma rays are ionizing and can damage living tissue.
In radiation therapy, high-energy electromagnetic waves like X-rays and gamma rays are used to target and destroy cancer cells with incredible precision. By understanding how these waves behave, we can harness their power safely and effectively to heal.
Keep shining bright,
Sara