Question

What is String theory​

Answer 1

Answer:

In physics, string theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called strings. It describes how these strings propagate through space and interact with each other. On distance scales larger than the string scale, a string looks just like an ordinary particle, with its mass, charge, and other properties determined by the vibrational state of the string. In string theory, one of the many vibrational states of the string corresponds to the graviton, a quantum mechanical particle that carries gravitational force. Thus string theory is a theory of quantum gravity.

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Answer 2

Answer:

String theory proposes that the fundamental constituents of the universe are one-dimensional “strings” rather than point-like particles. ... String theory also requires six or seven extra dimensions of space, and it contains ways of relating large extra dimensions to small ones.