Just an update - This video was shot in 2005. The Large Hadron Collider started in Sept 2008. It has been 12 years since the Supercollider started and sadly it hasnt found anything that supports String Theory in its current form. Beautiful idea, but still a long way to go.

This guy explained it so nicely that i didn't even notice those 19 minutes.

The only reason I ever got into theoretical physics was because of Brian Greene. And it was very random, too. Back in 2000, I was home, channel surfing at like 1am and I just happened to settle on a UHF channel and it was Brian Greene, giving a talk at a bookstore while promoting his book, The Elegant Universe. He started talking about string theory and I was hooked ever since lol.

Aliens finding out humans discovered string theory : Ah they've started kindergarten

7:43 I can only show of course 2 dimensions on screen, some of you guys will fix this one day. Inspiration level 3000.

To be honest. This guy is amazingly good at public speaking. He doesn't miss a beat. What a memory. An under-appreciated skill to have including the fact that he's also a genius. He's like a salesman, but he's selling you a pursuit in science.

One of the best classes I took in university was a physics course that was focused on understand the theories in a practical sense, like this, without all the math that can make it unapproachable. Math, physics and engineering need more opportunities like this to tell the story of what their math means... It makes it so much more interesting.

Ik he’s a physicist, but he BETTER be a physics teacher. If I had someone like this as a physics teacher I would still want to learn physics.

I want to drop everything and study physics now.

This would explain why mosquitoes are so hard to hit. They are so small that they keep jumping between dimensions.

As a stoner, I can appreciate the ants perspective

First time hearing Brian, and l found myself mesmerized by his simplictic way of describing complex theories. I could listen to him for hours, very interesting dude.

That was the quickest 19 minutes ever...that was amazing

Today I am proud that I understand English. I am not good at physics but I have understood each single word he has explained. The best presentation I have ever seen!

Man I've just recently gotten deep into physics and I've been looking for basic but comprehensive videos on string theory and I'm glad I found this👌🏾

He is one of the greatest speakers I’ve ever heard

I have been studying science for a very long time and this man just managed to explain a topic that i haven't been able to comprehend and I understood every word. This man is the perfect combination of thoughts and expressions.

Brian Greene is probably the most clear and concise communicator of physics I've ever heard. His show on PBS is excellent too.

It's so disappointing that this theory is still unproven... It's beautiful.

I'm utterly amazed that, even if string theory is wrong, humans are able to come up with such an elaborate and consistent model of the universe. The animation at 14:28 alone is just incredible. Somebody actually had to animate the Calabi-Yau shape based on mathematical descriptions created by physicists. That's amazing.

I feel like this man doesn't get enough recognition. I love the way he presents himself and he's an amazing man. Great work.

Why didnt my brain start to work until i left school.

"it'll be five years from now" *Video uploaded 7 years ago* me: :(

I wish more people could become more passionate for their work like this guy

ffs, meant to be revising for a biology exam... and I'm learning about string theory...

At least Flat earth society can upgrade to Flat Space society

How have I not seen this TED Talk before? I'll be watching it several times. Finally an explanation of string theory that a regular person can grasp.

Brian stands on the shoulders of many great giants I love his mind opening lessons. One of the greatest teachers of our time

1AM Me: *looking at dank memes* 2AM Me: hypothesizing about our surrounding universe and the dimensions in which we are encompassed in as it relates to space time and general relativity

“If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.” ― Nikola Tesla

Wow. Im incredibly intrigued and excited by this topic, and extremely loved this explanation, this person is very good at what he's doing. I've watched a couple or more of videos about the string theory, superstring theory and the multiple dimensions, this one is my favourite. I can say that i've understood a lot, but i very much know there is a lot more to uncover. Thank you!

Thanks Brian Greene. It's a real skill to be able to describe an incredibly complicated subject so that a layman get's it, even if it's at the most superficial level. I've heard the term String Theory a number of times and even used wiki to try to work out what it was all about. It just made me more confused. Just a few minutes listening to this video allowed me to understand the fuss.

the best easy-to-understand talk on string theory I have ever seen. those schematic animations helped greatly. thank you for sharing.

I cannot solve questions on 2d geometry and here I am learning about additional dimension!

I literally wish I knew someone that really enjoys these things and I can Discuss these with him

Great way to look at String Theory and Superstring Theory! Live the graphics and slides, makes it so much easier to understand. Thanks! ❣️❣️❣️

I have seen so many videos trying to explain string theory but I always end up with more questions than answers! BUT this one explains it IN-DEPTH and SIMPLISTICALLY!

"5, 7, to 10 years from now." 7 years after this TEDtalk we found the Higgs Boson.

Huge respect for Sheldon Cooper. Understand his fascination now.

On my opinion, the BEST ted talk ever! He speaks so good!

This is exactly what I was trying to explain to my friends when I was tripping on LSD.

and on the other hand we have flat earthers ......-_-

3:07am and im watching physics videos again. what a world we live in!

This was 7 years ago. I’d love to hear what progress we made on this since then!!

When he said "when you swing your hand you're moving around all these extra dimensions" I started waving my hand with such enthusiasm!

thousands of boring textbooks and articles in less than 20 mins. THIS IS GOLD!

What a wonderful way to describe this theory. Well constructed and presented. Even I could understand. Thank you Brian Greene

To me, it makes sense that dimensions exist that don’t interact noticeably with the ones we experience. After all, think of all the cell phone signals, wi-fi, Bluetooth, tv transmissions, etc. that surround us, yet we are oblivious to them. We have X-rays that go right through our soft tissue without being felt by us. Infrared signals in our remote controls. All these are constantly in our environment and operate in the dimensions we know about (the electromagnetic spectrum), but are only accessible with the aid of specially built detectors which extend our ability to detect parts of the spectrum our bodies have not been adapted to sense. The problem, of course, is that at our scale, there are size limits to what our specially built detectors can sense both in small scale, as well as large scale (e. g., the observable universe). It’s truly amazing the rate of change in our understanding of the universe in the last hundred plus years. Who knows what mysteries will be solved in the coming years? Fascinating!

What if our dimesions are the smallest dimesions, and the "missing" dimesions too BIG for us to observe...

Hats Off to The one who Made those animations that helped Us to understand String Theory.

What a Inspiring man. I am now a senior in high school but every time I see Brians presentations the more I get convinced to study Physics.

The best explanation ever given for string theory... thanks lot sir...

Watching this in 2019 and amazed at the fact that the collider is already being used

I need a follow-up video on this, a sequel of what came into fruition for the past years that the advocates of the superstring theory have worked on. Anyone recommend?

Brian Greene is an excellent orator, it takes knowledge as well communication skills to present the way he does!

I'll be a physicist just by listening to this guy for days!

Awesome explanation of string theory. I am 13 years old and interested in science and math a lot, and this made my day. This shows a CHILD could understand this video. Brian Greene is a very good lecturer.

This man explains very well,, i wish i had a physics teacher like this during my graduation 😢

This talk has the most visually helpful explanation for this

One theory to rule them all; One theory to find them; One theory to bring them all; And with dark matter bind them.

The comments here are more intelligent than most of KZfaq. I like this place.

I've seen this presentation over 10 times and I am still left amazed at what could be possible

I’m so glad that I finally got to go to college and study physics, I’ll be studying this theory in two years!!!!

Thank you for this! I understood not more than 25%, but enjoyed all of it. Great, great speaker!

Watching this while smoking weed. Seem like I'm closing to the truth of the universe.

To most of us Sheldon was the one who introduced us to the String Theroy. Amazing Fella.

Physics...love of my life, proud to be a physics learner.....and the learning is life long....doesn't stop!...and i want it should never stop

Thanks for the amazing lecture sir.

Thanks to Sheldon Cooper, I'm watching this video and many others and loving them all (and I'm in finance!)

So easy to understand after his excellent description. Truly. A master. A complex concept made simple. The mark of a true genius.Thank you Dr.Greene.

This TED talk is absolute Gold

This was presented really well!

The level of abstraction required to comprehend this stuff let alone come up with it is insane.

These 19 minutes changed my life.

This is the best video ever i watched about string theory

I love the way Brian Greene explains these theories. I've heard others explain it but I can understand him better.

All things and theories aside i loved this man way of explanation and presentation, he explained in a way even a high school student will understand what he wants to say. And this brings us back to most powerful way to learn something that is ACTIVE LEARNING by teaching others complex things in the simplest way possible.

That’s a brilliant explanation. Why would anyone give this a thumbs down?

I don't know who Brian Greene is but he is amazing at explaining a complex topic in a comprehensive manner.

Nikola Tesla's idea was absolutely right. He always laid emphasis on the vibrations and frequency. So the string theory based on the vibrations. He said if we change the vibrations and frequency of a particle then its all properties will also change.

Sometimes I wonder how videos like this don't have 6 billion views

why do i imagine myself talking like this, but irl i cant even say 5 words without stopping

I was getting a masters in education and had the chance to take Greene's class in quantum mechanics, even though I had minimal physics background. Literally one of the greatest decisions of my life

I started college as a physics major. It was precisely when I got to this part, the quantum physics including particles, that I realized I want to do finance.

I went to CERN in 2013 and they said that in they did measure the energy after the particle collisions and it was less than when they started. Our tour guide was doing her PhD and said it was most likely the energy was lost to other dimensions.

Brilliant explanation, & presentation hope the experiment will come true

Absolutely extreamly well explanation.

Always a pleasure to hear Brian Green! Thanks!

This might explain where my pen disappeared into when it fell down in my classroom

Excellent presentation by Green about a difficult theory to comprehend. I had my doubts about String Theory many years ago and I still do. In the intervening 20 years or so the theory still remains unproven and skepticism has grown.

30 odd years ago, I was deep in to studying the esoteric side of Aikido. One of the aspects was Kotodama. Superficially, was the very cursory understanding, often biased by cultural superstitions and traditions i.e translating Kotodama as power/magic sounds/words. In deep reflection, Kotodama as used to describe the cosmos was as 'sacred vibration'. In this esoteric idea rooted in Shinto and as interpreted by Omoto Kyo, all matter and energy is formed from these 'sacred vibrations'. The nature or 'frequency' of the vibration dictates the form (i.e. matter and energy) that is observable or deducable by man. The 'vibrations' have been attributed a human sound. 'Su' is the first emitted from the 'Big Bang' or the beginning, it's permutations formed the rest of what we know as matter and energy (even the gods of Shinto). (The most popular representation of this Ultimate Reality of the essence of the Universe is the sound 'Om' in Indic religions.) When I started to hear about vibrating strings and frequencies of super string, it reminded me.

I could listen to Greene speak all day long. He has mastered the art of simple explanation regardless of subject matter complexity.

Why am I like this.. this whole time I was reading the comments and not even paying attention .

Seen this vedio while I was in high school and hoped one day I will learn string theory . Currently, I am doing research in string theory. Quite a journey.

amazing explanation thank you!

Everything is literally energy, EVERYTHING, matter is just an illusion of energy manifesting as a physical object.

awesome!!!!....wish I had this in my school syllabus

Literally no one explains physics better than Dr. Greene.

Bored at home, and then found this video it's feels amazing

questions that wander my mind 1. if strings shaped particles do exist then the way they vibrate must have endless possibilities thus conforming existence of infinite number of new and undiscovered molecules throughout the many dimensions 2. if we can conform the value of the 20 numbers describing our universe by the way strings vibrate then we should be able to imagine the vibrations and figure out the shape of microscopic particles by the numbers we calculated through experiments(only if we contradict the first question) 3. if we are trying to send energy to different dimensions via LHC then there must exist a situation where energy from other dimensions could enter one of the visible dimensions by reasons unknown