Thursday, March 31, 2005

Medicine, Military practice

The theory that describes the action of the strong nuclear force. QCD was constructed on analogy to quantum electrodynamics (QED), the quantum theory of the electromagnetic force. In QED, the electromagnetic interactions of charged particles are described through the emission and subsequent absorption of massless photons, best known as the “particles” of light;

Tuesday, March 29, 2005

Ribeirão Prêto

City, in the highlands of northeastern São Paulo state, Brazil, at 1,700 feet (520 m) above sea level, on the Prêto River, a tributary of the Pardo River. Founded in 1856 and formerly called Entre Rios and São Sebastião do Ribeirão Prêto, the settlement was given town status in 1870 and was made the seat of a municipality in 1871. It was long renowned as a colonization and coffee-growing centre. Now

Monday, March 28, 2005

Andean Peoples

Even these two technological developments, however, are not enough to characterize and explain the emergence of Andean civilizations. From the intimate knowledge of their environmental conditions, the people developed a set of values that may have started from a desire to minimize risks but that soon was elaborated into an economic and political ideal. Every

Friday, March 25, 2005

Hooper, Franklin Henry

In 1899 Hooper joined the staff of the Britannica, in which his brother Horace, James Clarke, and others had acquired an interest. Franklin Hooper was connected with five editions of the Britannica in the ensuing

Thursday, March 24, 2005


Method of dyeing by hand in which coloured patterns are produced in the fabric by gathering together many small portions of material and tying them tightly with string before immersing the cloth in the dyebath. The dye fails to penetrate the tied sections. After drying, the fabric is untied to reveal irregular circles, dots, and stripes. Varicoloured patterns may

Monday, March 21, 2005

Ford, Henry

Ford spent most of his life making headlines, good, bad, but never indifferent. Celebrated as both a technological genius and a folk hero, Ford was the creative force behind an industry of unprecedented size and wealth that

Sunday, March 20, 2005

Rawlings, Jerry J.

Rawlings was the son of a Scottish father and a Ghanaian mother. He was educated at Achimoto College and the military academy at Teshie. He was commissioned

Saturday, March 19, 2005

Hu-lun Lake

Hu-lun Lake has varied considerably in area according to variations in the climate. At one time it was part of a large lake that included Pei-erh Lake, a somewhat

Friday, March 18, 2005

Italy, The revolutions of 1848

The first of the revolutions of 1848 erupted in Palermo on January 9. Starting as a popular insurrection, it soon took on overtones of Sicilian separatism and spread throughout the island. Piecemeal reforms proved inadequate to satisfy the revolutionaries, both noble and bourgeois, who were determined to have a new and more liberal constitution. Ferdinand II of the Kingdom

Wednesday, March 16, 2005

Tocqueville, Alexis De

The Revolution of 1848 brought about a new political situation for France and for Tocqueville. Having decried apathy as the chief danger for France, Tocqueville recognized even before the revolution that France was faced with a politically awakened working class that might well propel French politics into socialist and revolutionary channels. Tocqueville considered


Recipient of the Victoria Cross, the highest military award bestowed in Great Britain. See Victoria Cross.

Monday, March 14, 2005


The company was incorporated in 1892, acquiring all the assets of the Edison General Electric


Also called  Xhosa-ciskei, or Xosa-ciskei,   former republic (though never internationally recognized as such) that was inhabited principally by Xhosa-speaking people in southern Africa. It bordered the Indian Ocean on the southeast and was bounded by the Republic of South Africa on the southwest, northwest, and northeast. A fingerlike extension of South African territory on the northeast separated Ciskei

Saturday, March 12, 2005


When her husband died, Amalasuntha was left with a son, Athalaric, and a daughter. At Theodoric's death, in 526, Athalaric was 10 years old, and Amalasuntha assumed the regency. Her pro-Byzantine policy, her patronage of literature and the arts, and her desire to educate


Any of several species of flowering plants belonging to the family Asclepiadaceae (q.v.).

Thursday, March 10, 2005

Halévy, Ludovic

The son of the writer Léon Halévy and the nephew of the operatic composer Fromental Halévy, Ludovic began writing for the stage while


Calcium tungstate mineral, CaWO4, that is an important ore of tungsten. It acquired commercial value in the 20th century when tungsten became used in alloy steels and electric-light filaments. The mineral is named in honour of the Swedish chemist Carl Wilhelm Scheele, who obtained tungstic acid from it in 1781. Scheelite commonly occurs as compact or granular masses in contact

Wednesday, March 09, 2005

Humbert Of Silva Candida

A monk of the Benedictine monastery of Moyenmoutier, in the Vosges mountains, France,

Monday, March 07, 2005

Dow Chemical Company

Dow Chemical Company was founded in 1897 by chemist Herbert H. Dow of Midland to supplement the Midland Chemical Company (1890) and Dow Process Company (1895). Created in part because Dow required

Sunday, March 06, 2005


Amphibole mineral, an iron-rich sodium silicate. Lithium and magnesium replace iron in the structure to form eckermannite. Both minerals characteristically occur as dark-green crystals in alkali igneous rocks and their associated pegmatites. For chemical formula and detailed physical properties, see amphibole (table).

Saturday, March 05, 2005


Do (province), northwestern South Korea. It is bounded by the truce line with North Korea (north), by the do of Kangwon (east) and Kyongsang-puk and Ch'ungch'ong-nam (south), and by the Yellow Sea (west). The nation's capital, Seoul, is in the middle of the province but was separated from it administratively in 1946 as a special city. Formerly Kyonggi do was the granary of Seoul; the Kyonggi plain,

Art And Architecture, Oceanic, Australia

The Australian continent is liberally dotted with thousands of rock-art sites. They include rock shelters, outcrops of rock, and surface sheets of rock and are decorated with painted, pecked, or engraved figurative and nonfigurative forms in a wealth of styles. These are the main testimonials to the prehistoric art of the Aborigines; the only portable works from

Wednesday, March 02, 2005


Division of algae the members of which are commonly known as diatoms. See diatom.

Kathiawar Peninsula

Peninsula in southwestern Gujarat state, west-central India. It is bounded by the Little Rann (marsh) of Kachchh (Kutch; north), the Gulf of Cambay (east), the Arabian Sea (southwest), and the Gulf of Kachchh (northwest). From the northeast an ancient sandstone formation extends into the peninsula, which has an area of 23,000 square miles (60,000 square km). Most of the sandstone, however, is masked