Columbia Encyclopedia

Search results

500 results found

white dwarf

(Encyclopedia)white dwarf, in astronomy, a type of star that is abnormally faint for its white-hot temperature (see mass-luminosity relation). Typically, a white dwarf star has the mass of the sun and the radius of...

dwarf star

(Encyclopedia)dwarf star: see white dwarf.

dwarf cornel

(Encyclopedia)dwarf cornel: see dogwood.

dwarf elk

(Encyclopedia)dwarf elk: see wapiti.

dwarf planet

(Encyclopedia)dwarf planet, a nonluminous body of rock or gas that orbits the sun and has a rounded shape due to its gravity. Unlike a planet, a dwarf planet is not capable of clearing its orbit of smaller objects ...

dwarf tree

(Encyclopedia)dwarf tree, in horticultural practice, a tree artificially kept to a smaller size than is normal for average members of the species. This is usually accomplished either by limiting its root space and ...

brown dwarf

(Encyclopedia)brown dwarf, in astronomy, celestial body that is larger than a planet but does not have sufficient mass to convert hydrogen into helium via nuclear fusion as stars do. Also called “failed stars,”...

Chinese white

(Encyclopedia)Chinese white: see zinc oxide.

White, Bouck

(Encyclopedia)White, Bouck bouk [key], 1874–1951, American clergyman and author, b. Middleburg, N.Y. He was ordained as a Congregational minister in 1904 but was dismissed from his post at Trinity House, Brooklyn...

White, Charles

(Encyclopedia)White, Charles (Charles Wilbert White, Jr.), 1918–79, American figurative painter, printmaker, and teacher, b. Chicago, studied School of the Art Institute of Chicago. A left-leaning activist whose ...