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induction, in electricity and magnetism

(Encyclopedia)induction, in electricity and magnetism, common name for three distinct phenomena. Electromagnetic induction is the production of an electromotive force (emf) in a conductor as a result of a changing ...

Leopold I, Holy Roman emperor

(Encyclopedia)Leopold I, 1640–1705, Holy Roman emperor (1658–1705), king of Bohemia (1656–1705) and of Hungary (1655–1705), second son and successor of Ferdinand III. Upon his elder brother's death (1654), ...

mace, in botany and cooking

(Encyclopedia)mace, in botany and cooking: see nutmeg. ...

rust, in chemistry and metallurgy

(Encyclopedia)rust, in chemistry and metallurgy: see corrosion. ...

gill, in weights and measures

(Encyclopedia)gill, in weights and measures: see English units of measurement. ...

grain, in weights and measures

(Encyclopedia)grain, in weights and measures: see English units of measurement. ...

formula, in mathematics and physics

(Encyclopedia)formula, in mathematics and physics, equation expressing a definite fixed relationship between certain quantities. The quantities are usually expressed by letters, and their relationship is indicated ...

Jupiter, in astronomy

(Encyclopedia)Jupiter jo͞oˈpətər [key], in astronomy, 5th planet from the sun and largest planet of the solar system. Astronomers have discovered 79 satellites orbiting Jupiter, but five of those, small sate...

Horae

(Encyclopedia)Horae hōˈrē [key], in Greek religion and mythology, goddesses of the seasons; daughters of Zeus and Themis. Although they controlled the recurrence of the seasons, they also attended other gods and...

Otto II, Holy Roman emperor

(Encyclopedia)Otto II, 955–83, Holy Roman emperor (973–83) and German king (961–83), son and successor of Otto I. He was crowned joint emperor in 967. Shortly after his father died Otto faced a rebellion by h...