Quantum Theory
Quantum Theory
Introduction to quantum theory, quantum physics and how it’s applied
5 depths≈ 235 min of reading61 practice questions
The ladder
Choose how deep to go
Every depth is open. Start where it feels interesting — you can always move back.
- Discoverabout 49 minThe Double-Slit Detective: How Tiny Things Break the RulesThis lesson introduces quantum theory through the famous double-slit experiment, showing how particles act like waves when unobserved and how measurement changes what we detect. Students explore wave-particle duality, quantum probability, and technologies like lasers and MRI that
- Understandabout 41 minThe Quantum Leap: Why the Tiny World Breaks Every RuleThis lesson explains why energy comes in tiny packets called quanta, how particles behave as both waves and particles, and why quantum rules matter for lasers, MRI scans, and future computers. It separates real quantum weirdness from common misunderstandings.
- Investigateabout 51 minThe Quantum Difference: Rules for the Very SmallThis lesson introduces quantum theory through three concrete ideas—wave-particle duality, probability rules, and the observer effect. Learners change simulation conditions, compare classical and quantum predictions, and test how measurement timing alters outcomes.
- Go deeperabout 44 minThe Quantum World: Particles That Act Like WavesThis lesson introduces the strange behavior of electrons and photons through experiments, calculations, and models that replaced Newton's clockwork universe. Readers work through real cases using SI units and Indian contexts.
- Extendabout 50 minThe Quantum World Beyond What You Can TouchThis lesson explores how quantum theory replaces everyday intuition at atomic scales through wave-particle duality, the uncertainty principle, and superposition. Learners model quantum behavior with probability experiments, trace how classical physics breaks down, and evaluate re
Practise and apply
Question bank · 61 questions
2 sections from Foundation to Challenge, each with hints and a worked solution — or play a 10-question round for points and stars.
Foundation 16Core 20Stretch 14Challenge 11
Words to know
39 words are explained in these lessons
wave interferencePhotonPhotoelectric effectQuantisationWork function (φ)Wave-particle dualitySuperpositionMeasurement collapseuncertainty principleEigenvaluewave function (ψ)Diffraction+27 more