Scientific Theory
A comprehensive, well-substantiated explanation of a broad aspect of nature supported by extensive empirical evidence and repeated testing.
SI unit
N/A
In depth
Unlike the colloquial use of 'theory' as a guess, a scientific theory is the highest level of scientific explanation. It integrates laws, facts, and hypotheses into a predictive framework that can be refined as new evidence emerges.
Examples in the real world
Einstein's Theory of General Relativity, Quantum Electrodynamics, and the Kinetic Theory of Gases.