Quantum First Steps
Quantum physics sounds intimidating, but its first steps are concrete experiments with strange results. Follow the historical trail: the experiments that broke classical physics, the ideas that replaced them, and the nucleus where it all gets practical.
Module 1: The cracks in classical physics
The photoelectric effect and the atom that couldn't exist — classically.
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Module 2: Wave-particle duality
Light and matter both refuse to pick a side.
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Module 3: Uncertainty
Why you can't know everything, even in principle.
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Practice
Module 4: The nucleus and E = mc²
Radioactivity, half-life and mass turned into energy.
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Practice
Module 5: Relativity teaser
Quantum's partner revolution: time itself is flexible.