Visible Light Spectrum & Electromagnetic Radiation

People imagine they see the world directly, but human vision only picks up a tiny slice of reality. The visible spectrum is a small band of electromagnetic wavelengths. Everything outside that narrow range is invisible to us unless we use instruments. We see less than one percent of the electromagnetic spectrum. Even within that slice, our brains only register a simplified model. Vision processes compress the world by sharpening edges, ignoring details, filling gaps, and predicting what should b