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Pedro II

(Encyclopedia)Pedro II (Dom Pedro II de Alcântara), 1825–91, emperor of Brazil (1831–89). At the age of five, he succeeded under a regency when his father, Pedro I, abdicated. He was declared of age in 1840. P...

Titian

(Encyclopedia)Titian tĭshˈən [key], c.1490–1576, Venetian painter, whose name was Tiziano Vecellio, b. Pieve di Cadore in the Dolomites. Of the very first rank among the artists of the Renaissance, Titian was ...

de Gaulle, Charles

(Encyclopedia)de Gaulle, Charles shärl də gōl [key], 1890–1970, French general and statesman, first president (1959–69) of the Fifth Republic. De Gaulle was reelected to a second seven-year term in 1965. A...

Doppler effect

(Encyclopedia)Doppler effect, change in the wavelength (or frequency) of energy in the form of waves, e.g., sound or light, as a result of motion of either the source or the receiver of the waves; the effect is nam...

Ctenophora

(Encyclopedia)CE5 Pleurobrachia, representative of the phylum Ctenophora Ctenophora tĭnŏfˈərə [key], a small phylum of exclusively marine, invertebrate animals, commonly known as comb jellies. Because they...

forum

(Encyclopedia)forum, market and meeting place in ancient Roman towns in Italy and later in the provinces, corresponding to the Greek agora. By extension the word forum often indicates the meeting itself in modern u...

aerial and satellite photography

(Encyclopedia)aerial and satellite photography, technology and science of taking still or moving-picture photographs from a camera mounted on a balloon, airplane, satellite, rocket, or spacecraft. In the 19th cent....

Field, David Dudley

(Encyclopedia)Field, David Dudley, 1805–94, American lawyer and law reformer, b. Haddam, Conn.; brother of Cyrus W. Field and Stephen J. Field. He was graduated from Williams (1825), studied law in Albany and New...

Grand Ole Opry

(Encyclopedia)Grand Ole Opry, weekly American radio program featuring live country and western music. The nation's oldest continuous radio sho...

Ginsburg, Ruth Bader

(Encyclopedia)Ginsburg, Ruth Bader, 1933–2020, associate justice of the U.S. Supreme Court (1993–2020), b. Brooklyn, N.Y., as Joan Ruth Bader. A graduate (1954) of Cornell, she attended Harvard Law School, then...