Why does light choose the path it does when crossing between media? 🌈 This video presents a clear max–min derivation of Snell’s Law from Fermat’s Principle, showing how extremizing travel time leads ...

This is where Emmy Noether, a groundbreaking German mathematician, comes into the picture. She found a breathtakingly simple ...

Condensed-matter physics is the study of substances in their solid state. This includes the investigation of both crystalline solids in which the atoms are positioned on a repeating three-dimensional ...