What is string theory? See all videos for this article While string theory is still a vibrant area of research that is undergoing rapid development, it remains primarily a mathematical construct because it has yet to make contact with experimental observations. In the 1980s, physicists realized that string theory had the potential to incorporate all four of nature’s forces- gravity, electromagnetism, strong force, and weak force-and all types of matter in a single quantum mechanical framework, suggesting that it might be the long-sought unified field theory. The theory envisions that a string undergoing a particular mode of vibration corresponds to a particle with definite properties such as mass and charge. The name string theory comes from the modeling of subatomic particles as tiny one-dimensional “stringlike” entities rather than the more conventional approach in which they are modeled as zero-dimensional point particles. String theory, in particle physics, a theory that attempts to merge quantum mechanics with Albert Einstein’s general theory of relativity. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.
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