What is string theory ?

Question

it is about atom

Answer 1

String theory was proposed by the scientists of the Fermi lab and Cern. According to this theory, all particles(matter) in this universe are made up of small enclosed string within which gravitons are enclosed. These string project themself not only in the three dimensions but also in the fourth dimension. This theory also states that the Big Bang is not the begining of our universe. This theory describes that our universe may have an anti-universe or parallel universe and the collision between these two universe may triger the event called the Big Bang.
This theory also proposes that the probability of having an extra terrestrial life in our universe is high.

Answer 2

2

Answer 3

String theory is a model of fundamental physics whose building blocks are one-dimensional extended objects (strings) rather than the zero-dimensional points (particles) that are the basis of the Standard Model of particle physics. For this reason, string theories are able to avoid problems associated with the presence of point-like particles in theories of physics, in particular the problem of defining a sensible quantum theory of gravity. Studies of string theories have revealed that they predict not just strings, but also higher-dimensional objects.

The basic idea behind all string theories is that the fundamental constituents of reality are strings of extremely small scale (possibly Planck length, about 10-35 m) which vibrate at specific resonant frequencies.[1] Thus, any particle should be thought of as a tiny vibrating object, rather than as a point. This object can vibrate in different modes (just like a guitar string can produce different notes), with every mode appearing as a different particle (electron, photon etc.). Strings can split and combine, which would appear as particles emitting and absorbing other particles, presumably giving rise to the known interactions between particles.

In addition to strings, string theories also include objects of higher dimensions, such as D-branes and NS-branes. Furthermore, all string theories predict the existence of degrees of freedom which are usually described as extra dimensions. String theory is thought to include some 10, 11 or 26 dimensions, depending on the specific theory and on the "string" of view.

Interest in string theory is driven largely by the hope that it will prove to be a consistent theory of quantum gravity or even a theory of everything. It can also naturally describe interactions similar to electromagnetism and the other forces of nature. Superstring theories include fermions, the building blocks of matter, and incorporate supersymmetry, a conjectured (but unobserved) symmetry of nature. It is not yet known whether string theory will be able to describe a universe with the precise collection of forces and particles that is observed, nor how much freedom the theory allows to choose those details.

String theory as a whole has not yet made falsifiable predictions that would allow it to be experimentally tested, though various planned observations and experiments could confirm some essential aspects of the theory, such as supersymmetry and extra dimensions. In addition, the full theory is not yet understood. For example, the theory does not yet have a satisfactory definition outside of perturbation theory; the quantum mechanics of branes (higher dimensional objects than strings) is not understood; the behavior of string theory in cosmological settings (time-dependent backgrounds) is still being worked out; finally, the principle by which string theory selects its vacuum state is a hotly contested topic (see string theory landscape).

String theory is thought to be a certain limit of another, more profound theory - M-theory - which is only partly defined and is not well understood.

A key consequence of the theory is that there is no obvious operational way to probe distances shorter than the string length

Answer 4

String theory is that you are being led by a leash or in fact a string and are being led by a pet theory or a dog. Calculate the tension in the string and Viola! you have string theory. J/K.

Answer 5

string theory about a tom ?mmmm.
Well lets see i reackon maybe you tie a piece of string around the toms nuts and they fall off .
Sazam no more tom just a nice cat without the tackle.
hope this helps .grins

Answer 6

ITS THE THEORY OF STRINGS DEALING WITH ALL KINDS OF STRINGS.

Answer 7

it is a theory as to what the particles that make up protons neutrons and electrons are made of

Answer 8

if u see an ant it is of 3D.but if ant sees u it is multidimensional that's ur string theory

Answer 9

It describes the motions of falling objects and orbiting planets.

Answer 10

Go to www.superstringtheory.com