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analytic geometry

(Encyclopedia)analytic geometry, branch of geometry in which points are represented with respect to a coordinate system, such as Cartesian coordinates, and in which the approach to geometric problems is primarily a...

Disraeli, Benjamin, 1st earl of Beaconsfield

(Encyclopedia)Disraeli, Benjamin, 1st earl of Beaconsfield dĭzrāˈlē [key], 1804–81, British statesman and author. He is regarded as the founder of the modern Conservative party. Disraeli succeeded the earl ...

Parnell, Charles Stewart

(Encyclopedia)Parnell, Charles Stewart pärˈnəl, pärnĕlˈ [key], 1846–91, Irish nationalist leader. Haughty and sensitive, Parnell was only a mediocre orator, but he possessed a marked personal fascination an...

Kepler's laws

(Encyclopedia)CE5 Schematic representation of Kepler's second law: The areas ABF and A′B′F′ are equal and are swept out in equal intervals of time by a planet orbiting around the sun (at F). Kepler's laws...

sacrifice

(Encyclopedia)sacrifice [Lat. sacrificare=to make holy], a type of religious offering, or gift to a superior or supreme being, in which the offering is consecrated through its destruction. The Paleolithic evidenc...

Giotto

(Encyclopedia)Giotto (Giotto di Bondone) jôtˈtō dē bōndôˈnā [key], c.1266–c.1337, Florentine painter and architect. He is noted not only for his own work, but for the lasting impact he had on the course o...

Jews

(Encyclopedia)Jews [from Judah], traditionally, descendants of Judah, the fourth son of Jacob, whose tribe, with that of his half-brother Benjamin, made up the kingdom of Judah; historically, members of the worldwi...

Anne, queen of England, Scotland, and Ireland

(Encyclopedia)Anne, 1665–1714, queen of England, Scotland, and Ireland (1702–7), later queen of Great Britain and Ireland (1707–14), daughter of James II and Anne Hyde; successor to William III. Queen Anne ...

Crusades

(Encyclopedia)CE5 Crusader States (c.1140) Crusades kro͞oˈsādz [key], series of wars undertaken by European Christians between the 11th and 14th cent. to recover the Holy Land from the Muslims. After...

stellar evolution

(Encyclopedia)CE5 The above Hertzsprung-Russell (H-R) diagram shows the track of stellar evolution for a typical star. After spending much of its life evolving toward or along the main sequence, the star becomes...