By 1799 the number of Martha Washington's dower slaves had grown to 153; George Washington owned 124 people, and at least a dozen Washington-owned slaves intermarried.
Hund's rule of maximum multiplicity is a rule based on observation of atomic spectra, which is used to predict the ground state of an atom or molecule with one or more open electronic shells.
Arnold Gesell was an early American child development theorist who gathered normative data on a range of children and made this information accessible to the general public. Gesell firmly believed that each childâs development unfolded according to a genetic timetable.