The Physics of the Electromagnetic Spectrum: The Invisible Rainbow That Runs Our World Every time you check your phone, heat food in a microwave, see a rainbow, or get a medical X-ray, you’re interacting with the same fundamental phenomenon: electromagnetic radiation. It sounds technical, but the idea is beautifully simple. The electromagnetic spectrum is a vast family of waves that carry energy across space—some gentle and familiar, others powerful enough to change the structure of atoms. Toget