Big Think Physicist Brian Cox explains quantum physics in 22 minutes
5 snips
May 11, 2025 
In this enlightening conversation, physicist Brian Cox, a renowned Professor of Particle Physics at the University of Manchester, unravels the complexities of quantum physics. He discusses the evolution of teaching methodologies in quantum mechanics, underscoring how contemporary approaches aim to clarify rather than confuse. Cox elaborates on the mind-bending double slit experiment, revealing how it challenges classical logic. He also explores the promise of quantum computing, illustrating how qubits' unique abilities can unlock unprecedented computational power.
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Quantum Mechanics Unifies Reality
- Quantum mechanics follows consistent rules that unify the subatomic world with everyday common sense reality.
- The probabilities in quantum theory are intrinsic, not due to incomplete knowledge, unlike classical probability.
The Double Slit Experiment Anecdote
- The double slit experiment shows electrons creating an interference pattern like waves, even when sent one at a time.
- This suggests electrons explore all paths simultaneously, a strange but experimentally confirmed quantum fact.
Calculating Quantum Probabilities
- Quantum probabilities arise from adding complex numbers (clock faces) for every possible path of a particle.
- The squared length of the sum predicts the probability of detecting the particle at a location.
