String Theory.?

Question

What is String theory all about?? Can you provide me with the sufficient resources??...

Thanks for your time!

Answer 1

A super string is a model for an elementary particle.
In the Standard Model, quarks, electrons and the like are considered to be pointlike. This gives
problems at short distances where for instance the electromagnetic force between two of them becomes infinite.

The basic idea of super strings is that the fundamental constituents of matter are strings of a length of order of 10^35 m which vibrate at specific frequencies. However, the simplest string theories give more problems then they solve and consistent theories require more than four dimensions.
For references see my source.

Answer 2

Here, rather than doing it all over, I copied and pasted a "best answer" I gave some time ago:

eyeonthescreen
Level 2
Best Answer - Chosen by Asker

First, iaw super string theory, stings are not multi-dimensional; they are one dimensional, but operate in an 11-dimensional space-time. In fact, they are infinitely thin (don't ask) vibrating strings of energy one Plank length (1.6X10^-33 cm) long.

To give you an idea just how small a Plank length is, check this out:

"If the size of your fingernail were enlarged to the size of the universe, the Planck Length would be the size of a fingernail." [See source.]

According to "The Elegant Universe," cited by another answerer, how strings show up to us in our 4-D space depends solely on the vibration frequency of the strings. Quantum physics specifies that energy is proportional to frequency; so the higher vibration rates represent the higher energies in a string.

Depending on the frequency of each string, a string can appear as a weak, strong, electro-magnetic, or gravitational force. Or, again depending on its frequency, it can be any one of a dozen or so particles or quanta like: muons, quarks, and others I can't recall right now.

There are actually four string theories, which is an embarassment to the physics world. There should be but one theory to explain the universe. Ed Witten, arguably the brightest physicist in the world, came up with M-theory, which shows that the four string theories are the same theory, but from different points of view.

It's kind of like looking at a car hit a fire hydrant directly or, alternatively, through a rear-view mirror. Things would look different depending how you looked at the collision, mirror or directly, but it still would be the same car running into the same fire hydrant. Two points of view, but the same physics.

In the beginning, when the universe was very young (less than a second old after the big bang (ATBB)), it was made up of nothing but strings in their basic form. Then, as the universe cooled, some of these strings began to drop into our 4-D space as the forces and particles we recognize today in classical physics. I recall the first thing to drop into 4-D space was the photons (electro-magnetic force). Other forces dropped into real space later on; then the particles began to show up as the universe continued its cooling process.

Source(s):
http://www.mira.org/bonestell/kai/string... talks about Plank length, its derivation, and its significance.

Answer 3

You see man! I cant give you all the resources ... i think you should try out WikiPedia. But I can explain it to you somewhat....


You see people are seeing String theory as the theory of everything... Till now we have known that atoms are the smallest unit of matter. But accordin to String Theory the smallest unit is actually Energy that is in shape of a closed or an open string..that is the basix of string theory.... if one atom is the size of the solar system then one String of energy will be the size of a fully grown tree on eart.

Answer 4

String theory is a hypothesis that all matter is merely energy condensed to a slow vibration, called a 'string'. PBS did an interesting series called 'The Elegant Universe' which did a pretty good job of describing it. To the best of my knowledge the site is still up, which should tell you everything you want to know.

Answer 5

it is about the object tied in a string and swing them around where the gravity force(downward), swing direction force(circular motion) and swinging force(outward from center) interact with each other as it apply tensions on the string.
I guess you can locate them in the Book of Physics, natural law of gravity.

Answer 6

How long is a piece of string? - Twice its length from the middle!