Thursday, November 17, 2005

Xenophon

Born of a well-to-do Athenian family, Xenophon grew up during the great war between Athens and Sparta (431–404 BC) and served in the elite force of Athenian cavalry. He and his well-to-do contemporaries sat at the feet of Socrates, were critical of the extreme form of democracy under which they lived, and sympathized with the right-wing revolutionaries who seized power for short

Saturday, October 15, 2005

Lophophore Hypothesis

Viewpoint that conodonts, small toothlike structures found as fossils in marine rocks over a long span of geologic time, are actually parts of and supports for a lophophore organ used for respiration and for gathering or straining minute organisms to be used as food. Lophophores are frilled or fringed organs possessed by many kinds of animals, including brachiopods

Thursday, July 28, 2005

Axholme, Isle Of

Area of about 80 square miles (210 square km) west of the River Trent in the unitary authority of North Lincolnshire, historic county of Lincolnshire, England. A tract of low flatland less than 100 feet (30 metres) above sea level, it was formerly surrounded by fens. Drainage works, begun in the 17th century by Cornelius Vermuyden and subsequently extended and improved, have transformed

Tuesday, July 26, 2005

Radiolarian

Any protozoan of the class Polycystinea (superclass Actinopoda), found in the upper layers of all oceans. Radiolarians, which are mostly spherically symmetrical, are known for their complex and beautifully sculptured, though minute, skeletons, referred to as tests. Usually composed of silica, the test is elaborately perforated in a variety of patterns, forming a

Sunday, July 24, 2005

Koch

Also called  Rajbansi,   ethnic group of the Bodo people, dispersed over parts of Assam and Bengal. While their original language is a Tibeto-Burman dialect, large sections of the group in the 20th century spoke Bengali or other Indo-Aryan languages. In the 16th century a Koch chief established the state of Cooch Behar, and they now call themselves Rajbansi (Of Royal Blood), resent being called by the

Thursday, July 07, 2005

Ford Foundation

American philanthropic foundation, established in 1936 with gifts and bequests from Henry Ford and his son Edsel. At its peak it had assets of more than $4,000,000,000. Its chief concerns have been international affairs (particularly population control and the alleviation of food shortages), communications (especially public television), humanities and the arts, and, in later years,

Friday, July 01, 2005

Earth, Convective electrojets

The auroral electrojets are two broad sheets of electric current that flow from noon toward midnight in the northern and southern auroral ovals. The dawn side current flows westward, creating a decrease in the magnetic field on the surface. The dusk side current flows eastward and produces an increase in the magnetic field. Both currents flow at an altitude of approximately