NOVA - Official Website The Elegant Universe. The Elegant Universe: Part 3. PBS Airdate: November 4, 2.

NARRATOR: Now, on NOVA, take a thrill ride into a world. This is the world of "string theory," a way of describing every. Theory of. Everything." Our guide to this brave new world is Brian Greene, the bestselling.

BRIAN GREENE (Columbia University): And no matter how many times. I come here, I never seem to get used to it. NARRATOR: Can he help us solve the greatest puzzle of modern.

NARRATOR: Resolving that contradiction eluded even Einstein, who. After decades, we may finally be on the verge of a. The solution is strings, tiny bits of energy vibrating like the. But it comes. at a price: parallel universes and 1. BRIAN GREENE: We really may live in a universe with more dimensions than. AMANDA PEET (University of Toronto): People who have said that. NARRATOR: A mirage of science and mathematics or the ultimate.

S. JAMES GATES, JR. University of Maryland): If string theory. SHELDON LEE GLASHOW (Boston University): Is that a theory of. BRIAN GREENE: One thing that is certain is that string theory is already. NARRATOR: Coming up tonight, the undeniable pull of strings.

BRIAN GREENE: The atmosphere was electric. String theory goes through a. MICHAEL DUFF (University of Michigan): Five different string. BRIAN GREENE: .. and reveals the new shape of things to come.

SAVAS DIMOPOULOS (Stanford University): Perhaps we live on a. BRIAN GREENE: Our universe might be like a slice of bread.

BRIAN GREENE: We're trapped on just a tiny slice of the higher. ALAN GUTH (Massachusetts Institute of Technology): That's. NARRATOR: Watch the Elegant Universe right now. Major funding for NOVA is provided by the Park Foundation. We see 4. 00 employees in three years. At Microsoft, your potential inspires. Your potential, our.

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Science: it's given us the framework to help make wireless communications. Sprint is proud to support NOVA. Funding for the Elegant Universe is provided by the Alfred P.

Sloan. Foundation, to enhance public understanding of science and technology. And by the National Science Foundation, America's investment in the. Additional funding is provided by Volkswagen of America. And by the George D. Smith Fund, and the U.

S. Department of Energy. Major funding for NOVA is also provided by the Corporation for Public.

Broadcasting, and viewers like you. Thank you. BRIAN GREENE: Imagine that we were able to control space or control.

The kinds of things that we'd be able to do would be amazing. I might be. able to go from here.. Now, we all think that this kind of trip would be impossible. And it probably. is. But in the last few years, our ideas about the true nature of space and. And things that used to seem like. It's all thanks to a revolution in physics called "string theory," which is.

JOSEPH LYKKEN (Fermilab): String theory holds out the promise. DAVID GROSS (University of California, Santa Barbara): String. Wild West of physics. MICHAEL B. GREEN (University of Cambridge): This is an area of.

BRIAN GREENE: This radical new theory starts with a simple premise: that. Earth, these buildings, even forces like.

And small as they are, strings are changing everything we thought we knew. To see how, let's first shrink all of space to a more manageable size. Imagine. that the whole universe consisted of nothing more than my hometown, Manhattan. So now, just one borough of New York City makes up the entire fabric of. And just for kicks, let's also imagine that I'm the CEO of a large corporation. Wall Street. And because time is money, I need to find the. Manhattan to my offices in.

Manhattan. Now, we all know that the shortest distance between two points is a straight. Manhattan—it'll still take us some amount of time to get there.

By going. faster and faster, we can reduce the travel time. But because nothing can go. This Manhattan Universe fits with an old, classical vision of space, basically. But when Albert Einstein looked at. He said that space.

And there could even be unusual structures of space called "wormholes." A. In this kind of universe, my commute would be a New. Yorker's dream. But there's a hitch: to create a wormhole, you've got to rip or tear a hole in. Watch Online Watch Dangerous Calling Full Movie Online Film. But can the fabric of space really rip?

Can this first. step toward forming a wormhole actually happen? Well, you can't answer these.

Turns out that by looking at my breakfast—coffee and a doughnut—we can get a. Imagine that space is shaped like this doughnut. You might think that it would. But. there's a precise sense in which the shape of the doughnut and the coffee cup. You see, they both have one. In the doughnut it's in the middle and in the coffee cup it's in the.

That means we can change the doughnut into the shape of a coffee cup. Okay, but suppose you want to change the shape of this doughnut into a very. The only way to do that is to tear the. Unfortunately, according to Einstein's laws, this is impossible.

They say that. space can stretch and warp, but it cannot rip. Wormholes might exist somewhere. Manhattan. or anywhere else. In other words, I can't take a wormhole to work. But now string theory is giving us a whole new perspective on space, and it's. Einstein wasn't always right.

To see how, let's take a much. If we could shrink down to about a millionth of a billionth of our normal. It's the world of light and electricity and everything else that.

Here, the fabric of space is random and. Rips and tears might be commonplace.

But if they were, what would stop. Well, this is where the power of strings comes in.

Strings calm the chaos. And. as a single string dances through space, it sweeps out a tube.

The tube can act. Strings actually make it possible for space to rip. Which means that space is far more dynamic and changeable than even Albert.

Einstein thought. So does that mean that wormholes are possible?

Will I ever be. able to take a stroll on Everest, grab a baguette in Paris and still make it. New York in time for my morning meeting? It would be kind of cool, though it's still a very distant possibility. But one thing that is certain is that string theory is already showing us that. For example. string theory says we're surrounded by hidden dimensions, mysterious places. AMANDA PEET: People who've said that there were extra dimensions of. I. mean, what, do you think there are extra dimensions?

Well, string theory really. BRIAN GREENE: What we think of as our universe could just be one small. SAVAS DIMOPOULOS: Perhaps we live on a membrane, a three- dimensional. BRIAN GREENE: There could be entire worlds right next to us, but.

NIMA ARKANI- HAMED (Harvard University): These other worlds would. This isn't a particularly. BRIAN GREENE: No wonder physics students are lining up to explore the.

SHELDON LEE GLASHOW: String theory is very active. Things are happening. There are a lot of people doing it. Most of the young kids, given the choice. BRIAN GREENE: But strings weren't always this popular. The pioneers of. string theory struggled for years, working alone on an idea that nobody else.

Here's the gist of it: for decades, physicists believed that the. Flying around the outside. But string theory says that what we thought were indivisible particles. BURT OVRUT (University of Pennsylvania): It's nothing really. It's a really tiny string. It either closes in to its little circle.

BRIAN GREENE: In the 1. MICHAEL B. GREEN: Well, the fact that suddenly all these other people. It was. wonderful to see how rapidly the subject could develop now, because so many. BRIAN GREENE: One of the great attractions of strings is their.

Just as the strings on a cello can vibrate at different. If this view is right, then put them all. What's really exciting about this is that it offers an amazing possibility. If. we could only master the rhythms of strings, then we'd stand a good chance of. This is the potential of. Theory of Everything.". But, at first sight, in our enthusiasm for this idea, we seem to have gone too.

Because we didn't produce just one string theory, or even two—we somehow.