Black-Body Theory and the Quantum Discontinuity, 1894–1912

Black-body theory and quantum discontinuity refer to significant developments in physics during the late 19th and early 20th centuries, particularly concerning the nature of light and the behavior of matter at the atomic and subatomic levels. ### Black-Body Theory 1. **Definition**: A black body is an idealized physical object that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. The concept is crucial in the study of thermodynamics and quantum mechanics.