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How the Quantum Eraser Rewrites the Past | Space Time | PBS Digital Studios

PBS Space Time explains the quantum eraser experiment, in which erasing which-path information appears to reverse causality in a double-slit setup. It discusses what this means for quantum mechanics.

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Why HN readers recommended it

HN recommends it as a quick introduction to the quantum eraser and delayed choice weirdness, though one commenter notes later corrections to its framing.

This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.

Video & recommendation details

Creator / channel
PBS Space Time
Topic
quantum eraser experiment
Format
explainer
Level
intermediate
HN recommenders in dataset
4
HN mentions in dataset
8
Recommendation years in dataset
2017–2025

These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.

From the original HN conversations

Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.

  • One of the more head exploding experiments I've seen regarding entanglement is this one: [LINK] By all apparences, it seems to violate causality. It's one of those things that make you suddenly stop and bemusedly wonder if maybe we've finally found a kludge in the …

    chakalakasp on Hacker News · 2017-03
    In NIST Physicists Show Ion Pairs Perform Enhanced 'Spooky Action'

  • Here's a dumbed down version: [LINK] Also not directly related video if you like your mind being blown: [VIDEO] Especially given how our understanding of the world changed during the last 200 years, I would say we are still very much clueless. I find that …

    comboy on Hacker News · 2019-03
    In Experimental rejection of observer-independence in the quantum world

  • Indeed, a quick video from space time for those being first introduced. It’ll likely make you even more confused to the double slit experiment. [VIDEO]

    mitchty on Hacker News · 2019-10
    In Double Slit Experiment No Mystery

Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.

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