Imagine building a Lego tower with perfectly aligned blocks. Each block represents an atom in a tiny crystal, known as a ...
Photonic crystals are periodic optical structures that can control the flow of light. Multiple reflections from surfaces separated by a distance similar to the wavelength prevent an optical beam ...
Looking for fun and creative DIY sun catcher ideas? Check out this ultimate guide featuring 50 unique designs and kits for ...
Latest updates from your Sport topics will appear in My Sport in the BBC Sport App and in a collection on the BBC homepage.