The Lyman Series refers to a set of spectral lines in the ultraviolet region of the electromagnetic spectrum. These lines are produced when an electron in a hydrogen atom transitions from a higher energy level to the lowest energy level, known as the ground state. The wavelengths of these transitions are specific and can be calculated using the Rydberg formula. The Lyman Series is significant in the study of atomic structure and quantum mechanics. It helps scientists understand the behavior of electrons in atoms and is used in various applications, including astrophysics and spectroscopy. The series is named after the American physicist Theodore Lyman, who first observed these lines in the early 20th century.