Columbia Encyclopedia

Search results

500 results found

Orbiting Solar Observatory

(Encyclopedia)Orbiting Solar Observatory (OSO), series of eight orbiting observatories (see observatory, orbiting) launched between 1962 and 1971 by the National Aeronautics and Space Administration (NASA) to study...

National Museum of Women in the Arts

(Encyclopedia) National Museum of Women in the Arts, Washington, D.C., established in 1987. Washington-area philanthropist and art collector Wilhelmina Cole Holl...

William and Mary in Virginia, College of

(Encyclopedia)William and Mary in Virginia, College of, mainly at Williamsburg; state supported; coeducational; chartered 1693, opened 1694 by Episcopalians under James Blair. It became a university in 1779. The se...

ammonium nitrate

(Encyclopedia)ammonium nitrate, chemical compound, NH4NO3, that exists as colorless, rhombohedral crystals at room temperature but changes to monoclinic crystals when heated above 32℃. It is extremely soluble in ...

winter cress

(Encyclopedia)winter cress or upland cress, species of Barbarea, herbs of the family Cruciferae (or Brassicaceae; mustard family). The pungent leaves of several species have been used for salads or garnishes, and t...

National Council of the Churches of Christ in the United States of America

(Encyclopedia)National Council of the Churches of Christ in the United States of America, cooperative agency of 35 Protestant, Orthodox, and Anglican denominations. Formed in 1950, with headquarters in New York Cit...

Space Force, United States

(Encyclopedia)Space Force, United States (USSF), military force that forms a separate service within the U.S. Dept. of the Air Force, est. Dec. 20, 2019, by act of Congress. The head of the Space Force is the Chief...

Orbiting Geophysical Observatory

(Encyclopedia)Orbiting Geophysical Observatory (OGO), series of six orbiting observatories (see observatory, orbiting) launched between 1964 and 1969 by the National Aeronautics and Space Administration (NASA) to s...

Thiruvananthapuram

(Encyclopedia)Thiruvananthapuram trĭvănˈdrəm [key], city (1991 pop. 826,255), capital and largest city of Kerala state, SW India, a port on the Arabian Sea. The city is a transportation hub. Industries include ...

infrared radiation

(Encyclopedia)infrared radiation, electromagnetic radiation having a wavelength in the range from c.75 × 10−6 cm to c.100,000 × 10−6 cm (0.000075–0.1 cm). Infrared rays thus occupy that part of the electrom...