String Theory

How can we reconcile gravity with quantum physics? Why are there different types of particles? How can we verify the existence of additional dimensions? All these answers in 16 minutes!

0:00 - Introduction
2:17 - Strings and vibrations
4:03 - Dynamics and interactions
7:14 - Superstrings
10:09 - Compact dimensions
13:50 - Conclusion

And if you liked this video, you can share it on social networks!

Alessandro Roussel,

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To learn more :

[ixchelrodriguez]

It’s crazy how much you actually learn when you’re not being forced to

[syulis]

This is literally the most informative, well illustrated, easiest to understand videos on string theory I've ever seen.

[bf]

If any teachers are watching this, what makes this video particularly great is that it talks about the theory as an ongoing thing we're working on. Every school class I had would make some nod to "scientists are still out there working on things" but then they'd teach a bunch of stuff that's been outdated for years or even decades like it was set in stone and never actually bring up that part, or that a ton of it is just assumed. Kids naturally love to learn because they live in a world of unknowns so it's a valuable skill. But if you sit them down and give them the impression that everything is solved and then give them exercises that already have answers, they learn that learning is useless because someone else already figured out everything they might need, you're telling them the cognitive behaviors to think about things they don't yet have a grasp on are less useful, and the ones for memorizing and repeating are the most useful. That's a really dangerous cycle, and it's apparent in the fact that so many people stop learning as soon as they can get to comfortable.

[jpbcollins]

I was getting goosebumps at supersymmetry but that’s possible explanation of mass as the speed of light but slowed down by a small tightly curled direction was just incredible. This is a mind blowing video.

[SaadAhmed]

The background music, the narration style, and the visuals, make me feel like I'm discovering the secrets to the universe. Amazing work

[timex]

I watched this video about a month or so ago. Since then it’s been discovered that neutrinos oscillate between states and its theorized that a 4th state, known as a sterile neutrino, could be a gateway particle to understanding how dark matter works. It immediately made me think of the sections of this video that goes into the 10 dimensional universe part of string theory and I got chills when you mentioned at around 12:40 that superstring theory could also predict the existence of other particles that we can’t see because they reside within higher dimensions.

[PetardeWoez]

How is it that the quality of these videos is so INSANELY high? The visualitions, the extremely clear and intuitive way things are explained, it's so much better than any other channel. Thank you so much.

[Miss_Darko]

This is the first description of the small, curled up dimensions predicted by superstring theory that actually allowed me to have some kind of understanding of that's actually supposed to mean, and particularly why they seem to only be relevant at extremely small scales. Understanding that dimensions are essentially just different directions, different degrees of freedom, made it really hard to intuit how they could be smaller, or curved, compared to the familiar ones without that specific visualization.

[tdcfc]

This channel is such a treasure. I'm glad many thousands of people found it.

[curiodyssey]

Dude outstanding work. The animations are fluid and intuitive, the explanations easy to understand, and you communicate and craft these ideas in such a way that is incredibly concise without added irrelevant information all while not having to sacrifice the important core of the subject. You have an incredible talent, thank you for what you do.

[soulawaken]

This channel NEEDS to be recommended to every middle school and high school student learning physics. I can't imagine the amount of interest it would spark when you actually fundamentally understand some of the stuff you're learning about, instead of just memorizing formulas (which was how I was taught.. 😑). I've always preferred biology over physics because I find it harder to visualize what I'm learning about in Physics. Wished this channel actually existed when I was a student 😭

[RSHJazz]

Clear and concise and "why didn't I understand before?" Because it was never before explained so well. Thanks. It is really a good practice to show the limitations on the ideas and what work remains. That adds to the credibility of your presentation. How could this not be interesting!

[royalwolf]

I understood about 10% of this video. I am blown away by the great minds of the world that can calculate and understand the maths and physics required to work this out. Kudos to those great minds👍

[tinyawka]

I've seen the Super-String Theory explanation from another youtuber just a few days ago but your visuals are the most effective on the platform!

[satyamtiwari]

Giving small breaks between lines is one of the reasons why science click is famous 😎

[KhubaibKamran]

Rarely do I comment on a video to talk about how well made it is. But this time I feel compelled to do so. This was an absolutely excellent video, considering how well it's been put together so that the information remains comprehensible and doesn't confuse me. Not only that, the infographics used and the choice of words was also top notch. Amazing video overall.

[paradoxxgaming]

Im impressed by how well explained this is and well animated it is. I'd imagine countless hours were put down just for this video alone. Thank you so much for your work, it was really great.

[Pope_]

I love how this video dosent attempt to entirely explain EVERYTHING we know about string theory, but instead grants new viewers the abbility to search out more information if they want or need to for any reason by giving us the words we need to know to find more information.

[vbywrde]

This was very informative. I now can say I at least understand the fundamentals of string theory, which despite the large number of times I've encountered the theory before, this is the first lucid and comprehensive explanation that includes a sensibly selected set of definitions at the beginning to put the entire theory in context. Congratulations. Extremely well done. Thank you!

[eitasaulo]

The Design, the music, the narration, everything is perfect.