String Theory
String theory is an active research framework in particle physics that attempts to reconcile quantum mechanics and
general relativity. It is a contender for a theory of everything (TOE), a manner of describing the known fundamental
forces and matter in a mathematically complete system. The theory has yet to make novel experimental predictions at
accessible energy scales, leading some scientists to claim that it cannot be considered a part of science.
String theory mainly posits that the electrons and quarks within an atom are not 0-dimensional objects, but rather
1-dimensional oscillating lines ("strings"). The earliest string model, the bosonic string, incorporated only bosons,
although this view developed to the superstring theory, which posits that a connection (a "supersymmetry") exists between
bosons and fermions. String theories also require the existence of several extra, unobservable dimensions to the universe,
in addition to the four known spacetime dimensions. (from wikipedia.org)
The Elegant Universe is a PBS science documentary series, which story is based on the book The Elegant Universe by Brian Greene. It introduces string theory and consists of three episodes: Einstein's Dream; Strings The Thing; and Welcome To The 11th Dimension.
The Elegant Universe: Episode 1 - Einstein's Dream
This episode introduces string theory and shows that Einstein's goal of combining the physical laws of the universe in one theory that explains it all is the Holy Grail of modern physics.
The Elegant Universe: Episode 2 - String's the Thing
This episode explores the idea that string theory requires a universe with more than four space-time dimensions and how string theory resolves the conflict between general relativity and quantum mechanics.
The Elegant Universe: Episode 3 - Welcome to the 11th Dimension
This episode introduces M-theory that calls for a universe with 11 space-time dimensions and explains how the additional dimension of M-theory allows a string to stretch out into a membrane-like form that could exist in multiple dimensions.
| Web...... | NOVA | The Elegant Universe A Theory of Everything? A Conversation with Brian Greene. Viewpoints on String Theory. Imagining Other Dimensions. ... www.pbs.org/wgbh/nova/elegant/ |
| Talks.... | Brian Greene on string theory Physicist Brian Greene explains superstring theory, the idea that minscule strands of energy vibrating in 11 dimensions create every particle and force in the universe. ... www.ted.com/talks/lang/eng/brian_greene_on_string_theory.html |
| Talks | Lisa Randall: String Theory, Multiple Dimensions Lisa Randall discusses her research which focuses on string theory and the idea that there are multiple dimensions in space. ... forum-network.org/lecture/lisa-randall-string-theory-multiple-dimensions |
| Lecture | Physics Lectures on String Theory This is a collection of links to physics video lectures on string theory from CERN - introduction to string theory, string theory, string theory for pedestrians etc. ... www.infocobuild.com/education/audio-video-courses/physics/string-theory-cern.html |
| Lecture | String Theory and M-Theory Professor Leonard Susskind explains the basic theoretical and mathematical ideas, including the string-theoretic origin of gravity, the theory of extra dimensions of space, ... www.infocobuild.com/education/audio-video-courses/physics/string-theory-stanford.html |