Science
⚛️ Quantum Physics Quiz
Superposition, entanglement, and uncertainty — explore the quantum realm
Superposition, entanglement, and uncertainty — explore the quantum realm
Google's quantum computer performed a calculation in 200 seconds that would take the world's fastest supercomputer 10,000 years. From Planck's revolutionary quanta to the mind-bending double-slit experiment, quantum physics has overturned everything we thought we knew about reality. This quiz covers the key discoveries, famous thought experiments, and cutting-edge applications of quantum mechanics.
Each round presents 10 randomized multiple-choice questions drawn from a pool of 50, so every playthrough is different. You get instant feedback with explanations after each answer, plus a shareable score at the end.
Explore the foundations of quantum mechanics from Planck's 1900 energy quanta through Einstein's photoelectric effect and Bohr's atom model. Tackle the Heisenberg Uncertainty Principle, the double-slit experiment, quantum entanglement, and the Standard Model's 17 fundamental particles including the Higgs boson discovered at CERN in 2012. Discover how quantum tunneling powers stars and flash memory, and how qubits and superposition drive the quantum computing revolution.
Quantum entanglement occurs when two particles become linked so that measuring one instantly determines the state of the other, no matter how far apart they are. Einstein famously called this "spooky action at a distance." Alain Aspect's landmark 1982 experiments confirmed entanglement is real, and in 2022 Aspect shared the Nobel Prize in Physics for this work.
The Heisenberg Uncertainty Principle states that you cannot simultaneously know both the exact position and exact momentum of a particle. The more precisely you measure one, the less precisely you can know the other. Mathematically, the product of the uncertainties must be at least h-bar/2 (half the reduced Planck constant). This is not a limitation of instruments but a fundamental property of nature.
Unlike classical computers that use bits (0 or 1), quantum computers use qubits that can exist in a superposition of both 0 and 1 simultaneously. This allows quantum computers to process vast numbers of possibilities at once. In 2019, Google's Sycamore processor achieved "quantum supremacy" by completing a calculation in 200 seconds that would take classical supercomputers an estimated 10,000 years.
Last updated: April 2026