Columbia Encyclopedia

Search results

233 results found

chemical bond

(Encyclopedia)chemical bond, mechanism whereby atoms combine to form molecules. There is a chemical bond between two atoms or groups of atoms when the forces acting between them are strong enough to lead to the for...

Dreyfus Affair

(Encyclopedia)Dreyfus Affair drāˈfəs, drī– [key], the controversy that occurred with the treason conviction (1894) of Capt. Alfred Dreyfus (1859–1935), a French artillery officer and graduate of the French ...

Buddhism

(Encyclopedia)Buddhism bo͝odˈĭzəm [key], religion and philosophy founded in India c.525 b.c. by Siddhartha Gautama, called the Buddha. There are over 300 million Buddhists worldwide. One of the great world reli...

Mozart, Wolfgang Amadeus

(Encyclopedia)Mozart, Wolfgang Amadeus mōtˈsärt, Ger. vôlfˈgäng ämädāˈo͝os mōˈtsärt [key], 1756–91, Austrian composer, b. Salzburg. Mozart represents one of the great peaks in the history of music. ...

molecule

(Encyclopedia)molecule mŏlˈəkyo͞ol [key] [New Lat.,=little mass], smallest particle of a compound that has all the chemical properties of that compound. A single atom is usually not referred to as a molecule, a...

Turkistan

(Encyclopedia)Turkistan or Turkestan both: tûrkˌĭstănˈ, –stänˈ [key], historic region of central Asia. Western, or Russian, Turkistan extended from the Caspian Sea in the west to the Chinese frontier in th...

acids and bases

(Encyclopedia)acids and bases, two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Another theory that provides a very broad ...

Beijing

(Encyclopedia)Beijing pē-kĭng, pā– [key], city and independent municipality (2021 est. pop. 20,897,000), ...

Constitutional Convention

(Encyclopedia)Constitutional Convention, in U.S. history, the 1787 meeting in which the Constitution of the United States was drawn up. The convention at Philadelphia drew up one of the most influential document...

Napoleon III

(Encyclopedia)Napoleon III (Louis Napoleon Bonaparte), 1808–73, emperor of the French (1852–70), son of Louis Bonaparte (see under Bonaparte, family), king of Holland. Napoleon III was a complex figure. H...