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Core Concepts · Featured
What Is Quantum Superposition? The Idea That Breaks Common Sense
Quantum superposition is perhaps the strangest idea in all of physics — the notion that a particle can exist in multiple states at once until the moment you look at it. We break down what this really means, how it was discovered, and why Schrödinger's famous cat thought experiment still sparks debate today.
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Experiments · Fundamentals
Wave-Particle Duality & The Double-Slit Experiment
Light and matter behave like waves — until you try to observe them, at which point they behave like particles. The famous double-slit experiment revealed this bizarre truth. Here's a full walkthrough of the experiment and why Feynman called it "the only mystery" in quantum mechanics.
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Phenomena · Advanced
Quantum Entanglement: Einstein's "Spooky Action at a Distance"
Two particles can become so deeply connected that measuring one instantly tells you something about the other — no matter how far apart they are. Einstein hated this idea. But experiments have proven it real. We explain what entanglement is, how it works, and how it powers quantum computing.
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Principles · Core Concepts
Heisenberg's Uncertainty Principle — What It Really Means
Most people have heard of the Uncertainty Principle — the idea that you can't know both the position and momentum of a particle at the same time. But there's a common misconception: it has nothing to do with the limitations of our instruments. We explain the real, deeper meaning.
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Technology · Quantum Computing
A Beginner's Introduction to Quantum Computing
Quantum computers aren't just faster classical computers — they work on completely different principles. They use qubits instead of bits, and exploit superposition and entanglement to solve problems that would take a regular computer longer than the age of the universe. Here's how they work.
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Thought Experiments
Schrödinger's Cat: A Thought Experiment That Changed Physics
Erwin Schrödinger invented his famous cat paradox not to prove superposition was real — but to show how ridiculous it seemed when applied to everyday objects. Yet today, quantum superposition is one of the best-tested theories in all of science. Here is the full story.
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