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Bell's Theorem: The Quantum Venn Diagram Paradox

minutephysics · explainer · Watch on YouTube

Quantum physicsRecreational & visual math

What it is

MinutePhysics, with 3Blue1Brown, explains Bell's theorem using a Venn diagram paradox and polarizing filters. It shows why no local hidden variable theory can reproduce quantum correlations.

Why Hacker News recommends it

Repeatedly recommended as the most accessible explanation of Bell's inequality, reducing it to a simple counting problem.

  • 8 people recommended it
  • 5 different months
  • 0 strong recommendations
  • first 2019, last 2024

What HN commenters said

  1. “And the proof of this is surprisingly accessible”

    Accessible proof that outcomes cannot be predicted by hidden knowledge.

    justinpombrio, 2019-03 · Recommendation · in “How random can you be?”

  2. “This is a very good video on Bell's Inequality”

    Good explanation of Bell's inequality and quantum behavior.

    cdumler, 2019-10 · Recommendation · in “Quantum supremacy: the gloves are off”

  3. “the AHA moment in the video comes when you realize you can entangle the light and that adding a filter by one stream of light somehow causes the other stream of light to also be influenced.”

    Explains non-locality versus non-realism using entangled light and filters.

    ars, 2020-04 · Recommendation · in “Ask HN: What scientific phenomenon do you wish someone would explain better?”

  4. “Minute Physics and 3brown1blue did a two part collab that simplifies some of it down to a counting problem that'd be suitable for grade school.”

    Simplifies Bell's theorem into a counting problem.

    monocasa, 2020-04 · Recommendation · in “Ask HN: What scientific phenomenon do you wish someone would explain better?”

  5. “I found these two videos very helpful in understanding the quantum nature of light”

    Two-part collaboration clarifying the quantum nature of light.

    vulcan01, 2020-04 · Recommendation · in “Ask HN: What scientific phenomenon do you wish someone would explain better?”

  6. “Minute physics does a better job explaining it then I can.”

    Explains Bell's theorem tests better than the commenter can.

    simcop2387, 2021-05 · Recommendation · in “What did Einstein mean by “spooky action at a distance”?”

  7. “I can also suggest a video that seemed to me to explain Bell's theorem”

    Explains why correlations are stronger than classically possible.

    tsimionescu, 2021-05 · Recommendation · in “What did Einstein mean by “spooky action at a distance”?”

  8. “I really enjoyed this Minute Physics and 3Blue1Brown video describing hidden variables and Bell's theorem”

    Shows hidden variables cannot explain quantum probabilities.

    demurgos, 2024-02 · Recommendation · in “Inside the proton, the ‘most complicated thing you could possibly imagine’”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: bell's theorem, quantum entanglement, hidden variables, polarization, nonlocality

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