The physics of light, lenses, and waves — explained from first principles
Physics OpticsThe science of light
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Page 13 of 13 — articles on the physics of light, sorted newest first.

Light Fundamentals

Fun Facts About Light: 25 Interesting Things You Didn't Know

Light is stranger than it looks. It is the fastest thing there is, the Sun's light reaches you eight minutes old, and your eyes are photon detectors. Here are 25 fun facts about light, each one true and explained in a line.

Jun 12, 2026Umar Farooq
Light Fundamentals

Properties of Light — 7 Key Properties Explained

Light has a handful of behaviours that explain almost everything you see — from mirrors and rainbows to the glare-killing trick in your sunglasses. Here are the 7 key properties of light, each built up from a picture you already own.

Jun 10, 2026Umar Farooq
Light Fundamentals

What Is Light Energy? Definition, Examples & Properties

Light energy is the energy carried by light — and you meet it every second of the day. Here's a clear definition, everyday examples, the types and properties, and the physics behind it, from first principles.

Jun 10, 2026Umar Farooq