Quantum Physics and Philosophy quiz

More questions about Quantum Physics and Philosophy

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1. 1 Easy

   Which interpretation pairs complementarity with classical measuring devices?

   Answer: Copenhagen interpretation

   Why: Werner Heisenberg seems to have coined the name around 1955, while arguing against David Bohm's rival theory.

2. 2 Medium

   What does the wave function ψ represent in quantum mechanics?

   Answer: Probability amplitude

   Why: Born's 1926 paper first said ψ gives the probability; a footnote added in proof squared it, and that rule earned him a share of the 1954 Nobel Prize.

3. 3 Hard

   Which physicist said consciousness is needed to collapse the wavefunction?

   Answer: Eugene Wigner

   Why: Wigner argued this in his 1961 essay on the mind-body question, then abandoned it, crediting Dieter Zeh's 1970 work on decoherence.

4. 4 Easy

   What experiment demonstrates that measuring an electron changes its behavior?

   Answer: Double-slit experiment

   Why: Physics World readers voted it the most beautiful experiment in physics in 2002, in the version where electrons arrive one at a time.

5. 5 Medium

   Which interpretation gives each particle a definite, wave-guided path?

   Answer: Pilot wave theory

   Why: Louis de Broglie showed the guiding wave at Solvay in 1927 but dropped it after criticism such as Pauli's; David Bohm revived it in 1952.

6. 6 Hard

   Bell's Theorem proved that the universe cannot be both local and what?

   Answer: Realist

   Why: Aspect, Clauser and Zeilinger won the 2022 Nobel Prize in Physics for showing that nature really does violate Bell's inequality.