Columbia Encyclopedia

Search results

500 results found

base

(Encyclopedia)base: see acids and bases.

acid-base indicators

(Encyclopedia)acid-base indicators: see indicators, acid-base. ...

(Encyclopedia)indicators, acid-base, organic compounds that, in aqueous solution, exhibit color changes indicative of the acidity or basicity of the solution. Common indicators include p-nitrophenol, which is color...

Joint Base Andrews

(Encyclopedia)Joint Base Andrews, officially Joint Base Andrews Naval Air Facility Washington, formerly Andrews Air Force Base, U.S. military installation, 4,279 acres (1,732 hectares), central Md., est. 1943. It i...

Andrews Air Force Base

(Encyclopedia)Andrews Air Force Base: see Joint Base Andrews. ...

Malmstrom Air Force Base

(Encyclopedia)Malmstrom Air Force Base mälmˈstrəm, mălmˈ– [key], U.S. military installation, 3,573 acres (1,446 hectares), W central Mont., E of Great Falls; est. 1942. During World War II, it was the takeof...

Offutt Air Force Base

(Encyclopedia)Offutt Air Force Base, U.S. military installation, 1,907 acres (772 hectares), E Neb., S of Omaha; est. 1896 as Fort Crook, an army base. Converted to an airbase in the early 1900s and renamed in 1924...

Lackland Air Force Base

(Encyclopedia)Lackland Air Force Base lăkˈlənd [key], U.S. military installation, c.6,835 acres (2,766 hectares), S Tex., W of San Antonio; est. 1941, amalgated 2010 with Fort Sam Houston and Randolph Air Force ...

Langley Air Force Base

(Encyclopedia)Langley Air Force Base, U.S. military installation, 3,195 acres (1,293 hectares), SE Va., N of Hampton; est. 1917 and named for aviation pioneer Samuel P. Langley, amalgamated 2010 with Fort Eustis in...