Columbia Encyclopedia

Search results

500 results found

Bello, Sir Ahmadu

(Encyclopedia)Bello, Sir Ahmadu, 1910–66, Nigerian political, b. Rabbah (now in Sokoto State), NW Nigeria. A Fulani and descendent of Usuman dan Fodio, the founder of the Sokoto caliphate, he was a major figure i...

polarization of light

(Encyclopedia)polarization of light, orientation of the vibration pattern of light waves in a singular plane. Unpolarized light can be converted into a single polarized beam by means of the Nicol prism, a device ...

observatory, orbiting

(Encyclopedia)observatory, orbiting, research satellite designed to study solar radiation, electromagnetic radiation from distant stars, the earth's atmosphere, or the like. Because the atmosphere and other aspects...

Bhagavad-Gita

(Encyclopedia)Bhagavad-Gita bŭgˈəvəd-gēˈtə [key] [Skt.,=song of the Lord], Sanskrit poem incorporated into the Mahabharata, one of the greatest religious classics of Hinduism. The Gita (as it is often called...

virtual observatory

(Encyclopedia)virtual observatory, a collection of integrated astronomical data archives and software tools that utilize computer networks to create an environment in which research can be conducted. Several countr...

Thackeray, William Makepeace

(Encyclopedia)Thackeray, William Makepeace thăkˈərē [key], 1811–63, English novelist, b. Calcutta (now Kolkata), India. He is important not only as a great novelist but also as a brilliant satirist. In 1830, ...

neutron star

(Encyclopedia)neutron star, extremely small, extremely dense star, with as much as double the sun's mass but only a few miles in radius, in the final stage of stellar evolution. Astronomers Baade and Zwicky predict...

bremsstrahlung

(Encyclopedia)bremsstrahlung brĕmˈshträˌləng [key]: see X ray. ...

Tynemouth

(Encyclopedia)Tynemouth tīnˈməth, tĭnˈ– [key], city (1991 pop. 60,022), North Tyneside metropolitan district, NE England, on the Tyne River. Tynemouth is highly industrialized. Formerly a shipbuilding center...

Fridley

(Encyclopedia)Fridley, city (2020 pop. 29,590), Anoka co., SE Minn., a suburb north of Minneapolis, on the Mississippi River; settled 1847, inc. as a city 1957. A dis...