Subject

Optics, Explained

How light actually behaves when it meets matter and instruments. Refraction, lenses, microscopes, telescopes, and rainbows — the physics that shaped how we see and what we can see.

Articles

How Lenses Actually Work — Refraction at Two Curved Surfaces A lens bends light by refraction at two curved surfaces. Converging lenses focus rays to a point; diverging lenses spread them. Focal length, real vs virtual images, magnification — all follow from a simple geometry.

Where to go next

A short editorial reading list. Pick whichever fits how you like to learn.

Wikipedia: the formal definition, cross-references, and citations

Comments 0

No comments yet. Be the first to share your thoughts.