Optics Concepts

Optics is the study of how light behaves when it encounters surfaces and boundaries. Reflection explains mirrors and why you see your face in a still lake. Refraction explains lenses, rainbows, and why a straw looks bent in a glass of water — light changes speed and direction when it passes from one material to another. Together, these two concepts form the foundation for understanding cameras, eyeglasses, telescopes, fiber optics, and the physics of vision itself. Optics builds directly on the wave properties studied in the Waves family.

This family view narrows the full physics map to one connected cluster. Read it from left to right: earlier nodes support later ones, and dense middle sections usually mark the concepts that hold the largest share of future work together.

Use the graph to plan review, then use the full concept list below to open precise pages for definitions, examples, formulas, and related guides.