Quantum Physics
What Is Quantum Physics?
This lesson about what is quantum physics: quanta, wave-particle duality, entanglement, superposition, and uncertainty. From Planck to quantum computers—simple explanations of microworld…
Start lesson →The Copenhagen Interpretation: Why Reality Changes When We Look
Introduction: The “Magic” of Physics If quantum mechanics makes your head hurt, don’t worry. You are in good company. Niels Bohr, one…
Start lesson →The Electron Paradox: are electrons particles or waves?
This lesson introduces students to the wave-particle duality of electrons, from J.J. Thomson's particle discovery to de Broglie's matter waves and Davisson-Germer's…
Start lesson →Schrödinger’s Cat: The Famous Feline That Changed Physics
This lesson unpacks Schrödinger's famous cat paradox, where a feline in a sealed box is both alive and dead until observed, spotlighting…
Start lesson →What is Quantum Superposition: How to Be Everywhere at Once?
This lesson demystifies quantum superposition, where particles like electrons exist in multiple states simultaneously until measured, illustrated by the iconic double-slit experiment…
Start lesson →Quantum Tunneling: How Particles Walk Through Walls
This lesson unveils quantum tunneling, where subatomic particles like electrons "ghost" through energy barriers they classically can't overcome, thanks to their wave…
Start lesson →Quantum Entanglement: Einstein’s “Spooky Action”
In this lesson you will learn about quantum entanglement, where distant particles share a single wave function, instantly determining each other's states…
Start lesson →Quantum Gravity — The Quest for the “Theory of Everything”
This lesson explains the clash between General Relativity’s smooth spacetime and quantum mechanics’ jittery, pixelated universe, especially in extreme places like black…
Start lesson →Quantum Retrocausality — Can the Future Change the Past?
This lesson explores quantum retrocausality through Wheeler's delayed-choice experiment—where present measurements seem to dictate a photon's ancient path—and Scully's quantum eraser, which…
Start lesson →
Article
The quantum measurement problem: why reality gets weird when nobody’s looking
Picture this: you’re playing hide and seek with reality itself, and every time you peek around the corner to catch it in…
Read article →
Article
Quantum biology explained: hidden quantum processes
The robin outside your window navigates thousands of miles with pinpoint accuracy, somehow knowing exactly which direction is north. Plants around you…
Read article →
Article
Are we living in a simulation?
Introduction: a question that refuses to stay philosophical The notion that our reality might be a sophisticated simulation has migrated from science…
Read article →