Artists

Gamble, William Sylvester

Gamelin, Jacques

Gamma, Sebastiano

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha, beta, and gamma decay. The weak force is the mechanism that is responsible for beta decay, while the other two are governed by the electromagnetic and nuclear forces. Radioactive decay is a random process at the level of single atoms. According to quantum theory, it is impossible to predict when a particular atom will decay, regardless of how long the atom has existed. However, for a significant number of identical atoms, the overall decay rate can be expressed as a decay constant or as a half-life. The half-lives of radioactive atoms have a huge range: from nearly instantaneous to far longer than the age of the universe. The decaying nucleus is called the parent radionuclide (or parent radioisotope), and the process produces at least one daughter nuclide. Except for gamma decay or internal conversion from a nuclear excited state, the decay is a nuclear transmutation resulting...

Gammel Holtegaard

Gammon, James

Gammon, Reginald

Reginald Gammon (March 31, 1921 – November 4, 2005) was an American artist and member of the African-American artist's collective, Spiral.

Gampert, Jean-Louis

Jean-Louis Gampert (1884-1942) was a Swiss painter and illustrator.

Gandara, Antonio de la

Gandolfi, Gaetano

Gaetano Gandolfi (31 August 1734 – 20 June 1802) was an Italian painter, draughtsman and sculptor of the late Baroque period, mainly active in and around Bologna. He is known for his biblical, mythological and allegorical subjects, as well as his portraits and nudes. He was both a painter on canvas and a fresco painter. Gaetano and his older brother Ubaldo were among the leading artists in Italy during their lifetime. This reputation was earned by the excellent quality of their work, which lead to numerous major commissions from courts all over Europe.

Gandolfi, Mauro

Mauro Gandolfi (18 September 1764 – 4 January 1834) was an Italian painter, water colorist and engraver of the Bolognese School.

Gandolfi, Ubaldo

Gandon, James

James Gandon (20 February 1743 – 24 December 1823) was an English architect best known for his work in Ireland during the late 18th century and early 19th century. His better known works include The Custom House and the surrounding Beresford Place, the Four Courts and the King's Inns in Dublin and Emo Court in County Laois.