2026-01-15

Superposition: The Spinning Coin Behind Quantum Computing

Quantum superposition is one of the most fascinating — and most misunderstood — ideas in physics. In this video, I explain superposition using a simple everyday analogy: a spinning coin — and show how this concept sits at the heart of quantum computing.

Instead of being just a zero or a one, a quantum bit, or qubit, can exist in a combination of states at the same time. This video walks through what that really means, why superposition gives quantum computers their power, and why that same property also makes them so difficult to build.

In this video, you’ll learn:

  • What quantum superposition actually is

  • Why a spinning coin is a useful way to understand it

  • How qubits differ from classical bits

  • How superposition is used in quantum algorithms

  • Why measurement causes superposition to collapse

  • Why superposition makes quantum computers both powerful and fragile

Quantum computing isn’t about “doing everything at once.” It’s about carefully controlling quantum states so the right answers become more likely when measured. Understanding superposition is the first step toward understanding how quantum computers really work.

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