A basis set in theoretical and computational chemistry is a set of functions (called basis functions) which are combined in linear combinations (generally as part of a quantum chemical calculation) to create molecular orbitals.
Introduction. In the spring of 1861, decades of simmering tensions between the northern and southern United States over issues including statesâ rights versus federal authority, westward expansion and slavery exploded into the American Civil War (1861-65).
Convention uses the name The English Civil War (1642â1651) to refer collectively to the civil wars in England and the Scottish Civil War, which began with the raising of King Charles I's standard at Nottingham on 22 August 1642, and ended on 3 September 1651 at the Battle of Worcester.