hey has any body heard of the string theory and what is it all about?

Answer 1

It's a theory in Quantum Physics that basically states that all the alternate realities are connected to one another as like through a string. Thus if an event occurs in one reality it effects the alternate realities
a load of **** for as far as I am concerned

Answer 2

Think of a guitar string that has been tuned by stretching the string under tension across the guitar. Depending on how the string is plucked and how much tension is in the string, different musical notes will be created by the string. These musical notes could be said to be excitation modes of that guitar string under tension.
In a similar manner, in string theory, the elementary particles we observe in particle accelerators could be thought of as the "musical notes" or excitation modes of elementary strings.
In string theory, as in guitar playing, the string must be stretched under tension in order to become excited. However, the strings in string theory are floating in spacetime, they aren't tied down to a guitar. Nonetheless, they have tension. The string tension in string theory is denoted by the quantity 1/(2 p a'), where a' is pronounced "alpha prime"and is equal to the square of the string length scale.
If string theory is to be a theory of quantum gravity, then the average size of a string should be somewhere near the length scale of quantum gravity, called the Planck length, which is about 10-33 centimeters, or about a millionth of a billionth of a billionth of a billionth of a centimeter. Unfortunately, this means that strings are way too small to see by current or expected particle physics technology (or financing!!) and so string theorists must devise more clever methods to test the theory than just looking for little strings in particle experiments.
String theories are classified according to whether or not the strings are required to be closed loops, and whether or not the particle spectrum includes fermions. In order to include fermions in string theory, there must be a special kind of symmetry called supersymmetry, which means for every boson (particle that transmits a force) there is a corresponding fermion (particle that makes up matter). So supersymmetry relates the particles that transmit forces to the particles that make up matter.
Supersymmetric partners to to currently known particles have not been observed in particle experiments, but theorists believe this is because supersymmetric particles are too massive to be detected at current accelerators. Particle accelerators could be on the verge of finding evidence for high energy supersymmetry in the next decade. Evidence for supersymmetry at high energy would be compelling evidence that string theory was a good mathematical model for Nature at the smallest distance scales.

Answer 3

String theory is a way of describing the behaviour of particles at a very basic level. It treats small objects like electrons and quarks as vibrating loops and strings in many dimensions. "Superstring theory" and "brane" ideas are further extensions of the ideas.

From the point of view of anyone outside of theoretical physics though, where you see "string theory" you might as well read "really complex mathematical physics that I don't really need to worry about yet". As far as I know it has yet to lead to any technological applications.

Answer 4

its the suggestion that string is better than spaghetti. I think the theory needs far more research before being sited as scientific fact. For example, a spaghetti vest would not really be embraced by your grandfather on his weeks beach holiday in Grimsby. And likewise, a priceless ming vase purchased from ebay would probably shed its packaging whilst in transit in the royal mail should said packaging have been secured with spaghetti.

String carbonara can be a delite if served "al dente", perhaps with a showering of parmesan. served with hot crispy garlic bread and three gallons of Peroni (or stella)

Answer 5

Feudalserfer gave me this answer when i posed a similar question - i found it very helpful:

Brian Greene's book is excellent, but they're very hard concepts. His series The Elegant Universe unravels it all very well, to. The basic idea is that the very smallest units of matter are not solid particles at all, but differing small areas which vibrate at differing frequencies. The theory gives rise to some bizarre ideas, such as there are over ten dimensions, most wrapped up at the microscopic level. You'll need to read and re-read the concepts, as they're so counter-intuitive, they're hard to get a hold of (quite literally!)

Source(s):
http://superstringtheory.com/people/bgre...
http://en.wikipedia.org/wiki/string_theo...

Answer 6

Yes, I've heard of it. It is some sort of super theory that is supposed to unite quantum theory and gravity but don't ask me to explain it. I think it also has 11 dimensions.

Answer 7

string = 0.25 small rope and or 2 x thread.

Answer 8

they just stringing you along!

Answer 9

I have heard of it, but can't remember what it's about.