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flight

(Encyclopedia) CE5 Aircraft motions and control surfaces: Yaw, or motion to the left or right, is controlled by the rudder. Pitch, or climbing or dropping, is controlled by the elevators, which…

Bologna, Giovanni

(Encyclopedia) Bologna, Giovanni, or GiambolognaGiambolognajōvänˈnē bōlōˈnyä, jämˌbōlōˈnyä [key], 1524–1608, Flemish sculptor, whose real name was Jean Bologne or Boulogne. Though born in Douai,…

Wilkins, Sir George Hubert

(Encyclopedia) Wilkins, Sir George Hubert, 1888–1958, British explorer, b. Australia. He made a number of trips to Antarctica and to the Arctic. Valuable experience gained when he accompanied…

Hermes, in Greek religion and mythology

(Encyclopedia) Hermes, in Greek religion and mythology, son of Zeus and Maia. His functions were many, but he was primarily the messenger of the gods, particularly of Zeus, and conductor of souls to…

altimeter

(Encyclopedia) altimeteraltimeterăltĭmˈĭtər, ălˈtĭmēˌtər [key], device for measuring altitude. The most common type is an aneroid barometer calibrated to show the drop in atmospheric pressure in…

Schirra, Wally

(Encyclopedia) Schirra, Wally, (Walter Marty Schirra, Jr.), 1923–2007, the only American astronaut to fly in all of NASA's first three manned spaceflight programs, b. Hackensack, N.J., grad. U.S.…

Bellerophon

(Encyclopedia) BellerophonBellerophonbəlĕrˈəfŏn, –fən [key], in Greek mythology, son of Glaucus (3;) originally called Hipponoüs. He changed his name after he murdered a countryman and was forced to…

froghopper

(Encyclopedia) froghopper or spittlebug, small, hopping insect of the order Homoptera. The adult, under 1&fslsh;2 in. (1.2 cm) long in most species, is triangular in shape and usually gray or…

Millett, Kate

(Encyclopedia) Millett, Kate (Katharine Murray Millett), 1934–2017, American feminist author and activist, b. St. Paul, Minn., B.A. Univ. of Minn., 1956, M.A. Oxford, 1958, Ph.D. Columbia, 1968. Her…

fruit bat

(Encyclopedia) fruit bat, fruit-eating bat found in tropical regions of the Old World. It is relatively large and differs from other bats in the possession of an independent, clawed second digit; it…