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THE VIDEO SHELF · noether's theorem

Noether's Theorem and The Symmetries of Reality

PBS Space Time explains Noether's theorem: conservation laws such as energy and momentum are consequences of deeper symmetries. It also covers why those laws hold only under certain conditions.

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Why HN readers recommended it

HN commenters point to it as an approachable explanation of how symmetries give rise to conservation laws, including the story of Emmy Noether.

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
noether's theorem
Format
explainer
Level
intermediate
HN recommenders in dataset
5
HN mentions in dataset
10
Recommendation years in dataset
2018–2026

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.

  • Things are conserved when there's a corresponding symmetry; this is Noether's Theorem.[1] I won't pretend to understand half that article, but here's a video[2] on it. [1]: [LINK] [2]: [VIDEO]

    ben509 on Hacker News · 2020-01
    In Evidence that the key assumption made in discovery of dark energy is in error

  • I'd recommend the two episodes released right before the one about the black hole information paradox too. They set up for what is covered in the information paradox episode. "Why Quantum Information is Never Destroyed" - [LINK] "What Survives Inside A Black Hole?" - [LINK] …

    tzs on Hacker News · 2021-05
    In Physicists identify the engine powering black hole energy beams

  • PBS Space Time has done a couple of episodes on Stationary Action and Noether's Theorem that are approachable by those not yet already exposed to Langrangians: [LINK] [VIDEO] Sabine Hossenfelder also has a good episode on it: [LINK]

    michelpp on Hacker News · 2022-08
    In Noether's Theorem in a Nutshell (2020)

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

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