Devolution is the. a. passing of authority from the national government to the state and local levels. b. expansion of national authority that began in the 1930s. c. contraction of state authority and the expansion of local government authority.
Hello, There you go. The French chemist Paul-Emile Lecoq de Boisbaudran (1838â1912), who discovered it in 1875. Gallium (Latin Gallia meaning Gaul; also gallus, meaning rooster) was discovered spectroscopically by Lecoq de Boisbaudran in 1875 by its characteristic spectrum (two violet lines) in an examination of a zinc blende from the Pyrenees.
In its elemental form, gallium has a silvery appearance. Gallium is one of three elements that occur naturally as a liquid at room temperature, the other two being mercury and cesium. Gallium does not exist as a free element in nature and is sourced commercially from bauxite and sphalerite. Currently, gallium is used in semiconductor devices for microelectronics and optics. The element name originates from the Latin word 'Gallia', the old name of France, and the word 'Gallus,' meaning rooster.