When Conservation of Energy FAILS! (Noether's Theorem)

Опубликовано: 22 Июль 2019
на канале: The Science Asylum

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Go to http://audible.com/thescienceasylum or text 'thescienceasylum' to 500 500 to get started today. Is energy always conserved? Well, Noether's theorem in combination with Lagrangian mechanics and general relativity tells us that isn't true in general.
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VIDEO ANNOTATIONS/CARDS

Lagrangian Mechanics:
   • Lagrangian Mechanics: How powerful is...

What the HECK is Energy?
   • What the HECK is Energy?

Noether's Theorem Explained:
   • Noether's Theorem Explained
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RELATED YOUTUBE VIDEOS

PBS Space Time on Energy Conservation:
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Physics Girl on Energy Conservation:
   • Is energy always conserved?

Minute Physics on Energy Conservation:
   • A Simple Proof of Conservation of Energy
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OTHER SOURCES

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http://math.ucr.edu/home/baez/noether...
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LINKS TO COMMENTS

   • Lagrangian Mechanics: How powerful is...
   • Lagrangian Mechanics: How powerful is...
   • Lagrangian Mechanics: How powerful is...
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IMAGE CREDITS

NASA Big Bang:
   • NASA | The Big Bang

Nuclear Explosion:
   • Operation Hardtack-1 - Nutmeg 51538

Emmy Noether:
https://commons.wikimedia.org/wiki/Fi...
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TIME CODES

00:00 Intro
00:21 Conserved Quantities
01:14 Energy Transformation
01:58 Conservation of Energy
02:27 Noether's Theorem
03:06 Time Translation Invariance
03:39 Principle of Stationary Action
04:20 The Spacetime Lagrangian
05:07 Cosmic Microwave Background
05:46 Dark Energy
06:37 Summary
06:57 Outro
07:21 Sponsor Message
08:19 Featured Comments

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