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Foundations of Quantum Physics

Quantum Physics

A collection of historical milestones and scientific breakthroughs in quantum mechanics.

physics history quantum science

10 Questions Hard Ages 5+ Aug 4, 2026

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About this Study Set

This study set covers Quantum Physics through 10 practice questions. A collection of historical milestones and scientific breakthroughs in quantum mechanics. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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1 Who published the first theoretical derivation of the blackbody radiation law that introduced the concept of the energy quantum, h?

A Max Planck
B Albert Einstein
C Niels Bohr
D Louis de Broglie

2 Which 1927 experiment conducted by Davisson and Germer provided the first direct experimental evidence of the wave-particle duality of electrons?

A Stern-Gerlach experiment
B Photoelectric effect measurement
C Electron diffraction on nickel crystals
D Cloud chamber observation

3 The first successful quantum mechanical model of the hydrogen atom, which quantized angular momentum, was proposed by whom in 1913?

A Werner Heisenberg
B Erwin Schrödinger
C Niels Bohr
D Wolfgang Pauli

4 In 1935, which physicist proposed a thought experiment to illustrate the 'incompleteness' of quantum mechanics, involving a cat?

A John Bell
B Erwin Schrödinger
C Richard Feynman
D Max Born

5 Which invention, developed by Gerd Binnig and Heinrich Rohrer at IBM in 1981, utilizes the quantum tunneling effect to image surfaces at the atomic level?

A Transmission Electron Microscope
B Atomic Force Microscope
C Scanning Tunneling Microscope
D Quantum Cascade Laser

6 Who was the first to mathematically formulate the uncertainty principle, stating that position and momentum cannot be simultaneously measured with arbitrary precision?

A Werner Heisenberg
B Paul Dirac
C Enrico Fermi
D Julian Schwinger

7 Which 1922 experiment by Otto Stern and Walther Gerlach provided the first experimental proof of space quantization of angular momentum?

A Neutron diffraction
B Spin-orbit coupling in silver atoms
C Photo-ionization of gases
D Blackbody radiation spectra

8 The first practical implementation of a quantum logic gate was demonstrated in 1995 using which physical system?

A Superconducting qubits
B Trapped calcium ions
C Quantum dots
D Diamond nitrogen-vacancy centers

9 Who formulated the first relativistic wave equation for the electron, which predicted the existence of antimatter?

A Wolfgang Pauli
B Richard Feynman
C Paul Dirac
D John Wheeler

10 The first experimental demonstration of quantum entanglement between two photons was achieved in 1972 by which researchers?

A Aspect and Grangier
B Freedman and Clauser
C Bell and Aspect
D Zeilinger and Pan

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