Tuesday, February 27, 2007

Mobile

A mobile or cellular telephone is a long-range, transferable electronic device for personal telecommunications over long distances. In addition to the standard voice function of a telephone, current mobile phones can support many additional services such as SMS for text messaging, email, packet switching for access to the Internet, and MMS for sending and receiving photos and video. Most current mobile phones attach to a cellular network of base stations (cell sites), which is in turn interconnected to the public switched telephone network (PSTN) (the exception are satellite phones).
Mobile phones are not distinct from cordless telephones, which usually operate only within a limited range of a specific base station. In principle, the term mobile phone includes such devices as satellite phones and pre-cellular mobile phones such as those operating via MTS which do not have a cellular network, whereas the linked term cell(ular) phone does not. In practice, the two terms are used almost interchangeably.

Thursday, February 22, 2007

The Mouflon

The Mouflon is a variety of wild sheep and as such is one of the Caprinae or "goat antelopes". It is consideration to be one of the two ancestors for all modern domestic sheep breeds. It is red-brown with a dark back-stripe, light colored saddle patch and underparts. The males are horned and the females are horned or polled.
They originated in Southwest Asia, where the types known as Asiatic mouflon lives. They were introduced to the islands of Corsica, Sardinia, and Cyprus through the neolithic period, perhaps as feral domesticated animals, where they naturalized to the mountainous interiors of these islands over the past few thousand years, giving rise to the species known as European mouflon . They are now unusual on the islands, but have been successfully introduced into central Europe, including Germany, Austria, the Czech Republic, Slovakia, Hungary, and Romania, even in some northern European countries, such as Finland.
The scientific classification of the Mouflon is disputed but the European Mouflon may be considered as either Ovis musimon or Ovis ammon musimon.

Sunday, February 18, 2007

Elephant- Legs and feet

An elephant's legs are big straight pillars, as they must be to support its bulkiness. The elephant needs not as much of muscular power to stand because of its straight legs. For this reason an elephant can stand for very lengthy periods of time without tiring. In fact, African elephants rarely lie down unless they are sick or injured. However, Indian elephants lie down in general.
The feet of an elephant are almost round. African elephants contain three nails on each hind foot, and four on each front foot. Indian elephants contain four nails on each hind foot and five on each front foot. Beneath the bones of the foot is a rough, gelatine-like material that acts as a cushion or shock absorber. Under the elephant's weight the foot swells, but it gets slighter when the weight is removed. An elephant can go down deep into mud, but can pull its legs out readily because its feet become smaller when they are lifted.An elephant is a good swimmer and climber, but it can trot, run, jump, nor gallop. It has only one step, a sort of gliding shuffle, which it can step up to the speed of a human runner. There are few animals that can pass through farther in a day than the elephant.

Sunday, February 11, 2007

Gold

Gold is a extremely sought-after valuable metal that for many centuries has been used as money, a store of value and in ornaments. The metal occurs as nugget or grains in rocks and in alluvial deposits and is one of the coinage metals. It is a soft, glossy, yellow, dense, malleable, and ductile (trivalent and univalent) change metal. Modern manufacturing uses include dentistry and electronics. Gold forms the basis for a financial typical used by the International Monetary Fund (IMF) and the Bank for International resolution (BIS). Its ISO currency code is XAU.

Gold is a tinny element with a trait yellow color, but can also be black or ruby when finely alienated, while colloidal solutions are intensely tinted and often purple. These colors are the effect of gold's plasmon frequency lying in the visible range, which causes red and yellow glow to be reflected, and blue light to be engrossed. Only silver colloids show the same interactions with light, albeit at a shorter occurrence, making silver colloids yellow in color.

Gold is a good conductor of temperature and electricity, and is not precious by air and most reagents. Heat, damp, oxygen, and most corrosive agents have very little chemical effect on gold, making it well-suited for use in coins and jewelry; equally, halogens will chemically alter gold, and aqua regia dissolve it.

Pure gold is too soft for ordinary use and is hard-boiled by alloying with silver, copper, and other metals. Gold and its lots of alloys are most often used in jewelry, coinage and as a typical for monetary exchange in various countries. When promotion it in the form of jewelry, gold is calculated in karats (k), with pure gold being 24k. However, it is more commonly sold in lower capacity of 22k, 18k, and 14k. A lower "k" indicates a higher percent of copper or silver assorted into the alloy, with copper being the more typically used metal between the two. Fourteen karat gold-copper alloy will be almost identical in color to definite bronze alloys, and both may be used to produce polish and added badges. Eighteen karat gold with a high copper content is establish in some traditional jewelry and will have a distinct, though not dominant copper cast, giving an attractively warm color. A comparable karat weight when alloyed with silvery metals will appear less humid in color, and some low karat white metal alloys may be sold as "white gold", silvery in exterior with a slightly yellow cast but far more resistant to decay than silver or sterling silver. Karat weights of twenty and higher is more general in modern jewelry. Because of its high electrical conductivity and confrontation to decay and other desirable combinations of physical and chemical properties, gold also emerged in the late 20th century as an vital industrial metal, particularly as thin plating on electrical card associates and connectors.

Monday, February 05, 2007

Public transport

Public transport, public transportation, public travel or mass transit comprises all transport systems in which the passengers do not tour in their own vehicles. While it is generally taken to include rail and bus services, wider definitions would comprise scheduled airline services, ship, taxicab services etc. – any system that transports members of the universal public. A further restriction that is sometimes practical is that it must take place in shared vehicles that would bar taxis that are not shared-ride taxis.