Monday, April 04, 2005
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
For the mapping of terrestrial features, aerial photographs usually are taken in overlapping series from an aircraft following a systematic flight pattern at a fixed altitude.
British poet chiefly remembered for Grongar Hill (1726), a short descriptive and meditative poem, in the manner of Alexander Pope's Windsor-Forest, in which he portrays the countryside largely in terms of classical landscape. The poet describes the view from a hill overlooking the vale of Towy
Saturday, April 02, 2005
Not much is known of Ringo, not even his birthplace. He showed up first in Mason county, Texas, in 1875, where he was suspected of cattle rustling and arrested for a double murder. He escaped from jail, was re-arrested, and was released. He appeared next in Galeyville, N.M., in 1879, already possessing
After fighting in the American Civil War, Powell joined Illinois Wesleyan University as professor of geology. In 1867 he became a lecturer at Illinois Normal College
Friday, April 01, 2005
Ordained a priest in 1867, Schaepman received a doctorate in church history (1869) and taught at a seminary for many years.
Wednesday, March 30, 2005
Statement that the total radiant-heat energy emitted from a surface is proportional to the fourth power of its absolute temperature. Formulated in 1879 by Josef Stefan, an Austrian physicist, as a result of his experimental studies, the same law was derived in 1889 by Ludwig Boltzmann, also an Austrian physicist, from thermodynamical considerations: if E is the radiant heat
Any of several viruses in the herpes family (Herpesviridae), frequently involved in human infection. The virus is so named for the enlarged cells produced by active infections; these cells are characterized by the inclusion of foreign matter, especially in the nucleus. Cytomegalovirus, which is transmitted by sexual contact or exposure to infected body fluids,
Monday, March 28, 2005
Ancient Iranian site located northeast of Dowlatabad in southeastern Iran; it has yielded valuable information on the economic exchange patterns of the 3rd millennium BC. Excavations (196870) by the American School of Prehistoric Research have revealed that Tepe Yahya was almost continuously occupied from the middle of the 5th millennium to the end of the 3rd millennium BC. It
Kadesh is mentioned for the first time in Egyptian sources when Thutmose III (14791426 BC) defeated a Syrian insurrection under the leadership of the prince of Kadesh at Megiddo in Palestine. Kadesh remained an outpost of Egyptian
Formerly (196973) National Association for the Repeal of Abortion Laws American organization, founded in 1969 to centralize state abortion-rights efforts and continuing its mission thereafter to protect and promote reproductive freedom. The organization consists of three related entities: NARAL Inc., a nonprofit organization that focuses on defending abortion rights and on making abortions less necessary; NARAL-PAC, a registered
Sunday, March 27, 2005
Also called Saturnian metre the ancient Latin verse used mainly by Livius Andronicus and Gnaeus Naevius before the adoption of Greek verse forms by later Latin writers. Little is known about its origins or whether its rhythm was accentual or quantitative.
Sewing technique in which fabric patches are layered on a foundation fabric, then stitched in place by hand or machine with the raw edges turned under or covered with decorative stitching. From the French appliquer, to put on, appliqué is sometimes used to embellish clothing or household linens. Like patchwork (piecing), it is a method of constructing or embellishing
Saturday, March 26, 2005
Decorative treatment of frames for mirrors and pictures. Before the 15th century in Europe, frames hardly existed separately from their architectural setting and, with the altarpieces or the predellas they surrounded, formed an integral part of the decorative scheme of the church interior. Such frames were frequently burnished with gold leaf. During the 15th century,