Final answer:
In string theory, free floating close loops of strings refer to fundamental objects that vibrate in multiple dimensions, representing different forms of matter, gravity, light and other fundamental forces.
Step-by-step explanation:
In string theory, the term free floating close loops of strings is often used. The theory proposes that infinitesimal strings are the fundamental building blocks that constitute all matter and energy in the universe. Picture these strings existing in an 11-dimensional space, far more complex than the 4-dimensional spacetime we are familiar with.
These strings can either be open-ended or closed loops. When we refer to 'free floating close loops of strings,' we're speaking of the latter type. These strings vibrate in various dimensions, and their different modes of vibration make them manifest in our observable world as different forms of matter, gravity, light, and other fundamental forces.
A parallel can be drawn with the behaviour of a stretched string subjected to tension. Imagine a student creating waves on a string in a physics lab, with one end attached to a wall and the other held by the student. Some patterns of waves could be likened to the vibrating strings in the string theory.
Learn more about String Theory