What is the string theory, and what are strings made out of?

zbeckabee

a model of fundamental physics whose building blocks are one-dimensional extended objects called strings, rather than the zero-dimensional point particles that form the basis for the Standard Model of particle physics. The basic idea behind all string theories is that the fundamental constituents of reality are strings of extremely small size (possibly of the order of the Planck length, about 10−35 m) which vibrate at specific resonant frequencies. http://en.wikipedia.org/wiki/String_Theory Feb 17 07, 10:13 AM

queproblema

"In these theories the basic objects are not particles, which occupy a single point of space, but things that have a length but no other dimension, like an infinitely thin piece of string." A Brief History of Time, p. 159 There can be open strings, closed strings, joined strings. "...what were previously thought of as particles are now pictured as waves traveling down the string,..." p. 160 Feb 17 07, 10:22 AM