Columbia Encyclopedia

(Encyclopedia) Malus, Étienne Louis ātyĕnˈ lwē mälüsˈ [key], 1775–1812, French artillery officer and physicist. In 1810 he stated his discovery of the polarization of light by reflection and published a me...

(Encyclopedia) Riel, Louis lwē rēĕlˈ [key], 1844–85, Canadian insurgent, leader of two rebellions, b. Manitoba, of French and Métis parentage. In 1869–70 he led the rebels of the Red River settlements, main...

(Encyclopedia) Louis I, French king: see Louis I, emperor of the West. ...

(Encyclopedia) Davout, Louis Nicolas lwē nēkôläˈ dävo͞oˈ [key], 1770–1823, marshal of France. One of Napoleon's ablest generals, Davout defeated a Prussian army at Auerstedt (1806) and played a brilliant p...

(Encyclopedia) Wallace, Henry, 1836–1916, American agricultural leader, b. West Newton, Pa., grad. Jefferson (later Washington and Jefferson) College, 1859. He studied (1861–63) theology and went (1863) to Iowa ...

(Encyclopedia) Henry's law, chemical law stating that the amount of a gas that dissolves in a liquid is proportional to the partial pressure of the gas over the liquid, provided no chemical reaction takes place betw...

(Encyclopedia) Henry, Alexander, two fur traders, uncle and nephew, of the Old Northwest, each of whom left a valuable journal of his travels and experiences. Alexander Henry, the elder, 1739–1824, b. New Brunswic...

(Encyclopedia) Louis the Child, 893–911, German king (900–911), son and successor of King Arnulf. He was the last of the German line of the Carolingians. The archbishop of Mainz was regent for him. During his re...

(Encyclopedia) O'Neill, Paul Henry, 1935–2020, American business executive and government official, b. St. Louis, Mo., grad. Fresno State College (B.A.) and Indiana Univ. (M.P.A.). A Republican, O'Neill began his ...

(Encyclopedia) Pelham, Henry pĕlˈəm [key], 1696–1754, British statesman; brother of Thomas Pelham-Holles, duke of Newcastle. He entered Parliament in 1717 and served Sir Robert Walpole as secretary for war (172...