The Symmetries of the universe

Why is energy conserved? What's a gauge symmetry? How were quarks discovered? All these answers in 15 minutes!

0:00 - Introduction
0:35 - Global symmetries
2:23 - Conservation laws
4:17 - Global symmetry for electrons
5:49 - Our real universe
7:42 - Changing point of view
11:23 - Local symmetry for electrons
13:10 - Conclusion

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Alessandro Roussel,

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To learn more :

[ScienceClicEN]

A little precision at the end to avoid confusion : At 14:19 the symmetry which is referred to is not the color charge symmetry of chromodynamics (which is also based on the number 3), but the flavour symmetry. I've been a bit sloppy in the animation and the colors I've chosen might seem to suggest that this is the color symmetry (even though quarks do indeed respect the color symmetry)

[hyewhme]

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[Yeslipoi]

This channel is a marvel of physics pedagogy, animation and editing

[rushofblood]

I always breathe a sigh of relief when he says "to understand..."

[theopantamis]

Physist: "It's too long to explain intuitively gauge theory and covariant derivatives"
ScienceClic: "Hold my nuclear beer"

How lucky we are to have you to explain us all of this !

[beauthetford]

the best video about Noether's theorem I've found. Love how you tie in Mach's principle, GR, quantum field theory, supersymmetry very elegantly. The animations support the explanations very well too.

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[AuroraNora]

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