Light Fundamentals
Page 2 of 2 — articles on light fundamentals, sorted newest first.
How Do Blue Light Glasses Work? The Science Behind Them
Blue light glasses promise to save your eyes from screens. The optics are real — a tint or coating does filter some blue light — but the evidence on what that actually does is more surprising. Here's the honest science.
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.
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.
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.