Saturday, June 30, 2007

History of Motorola

Motorola started as Galvin developed Corporation in 1928. The name Motorola was adopted in 1947, but the word had been used as a trademark since the 1930s. Founders Paul Galvin and Joe Galvin came up with the name Motorola when his company started manufacturing car radios. A number of early companies making phonographs, radios, and other audio tackle in the early 20th century used the suffix "-ola," the most famous being Victrola; RCA made a "radiola"; there was also a company that made jukeboxes called Rock-Ola, and a film editing device called a Moviola. The Motorola prefix "motor-" was chosen because the company's first focus was in automotive electronics.

Most of Motorola's crop has been radio-related, starting with a battery eliminator for radios, through the first walkie-talkie in the world, defense electronics, cellular infrastructure equipment, and mobile phone manufacturing. The company was also strong in semiconductor technology, including integrated circuits used in computers. Motorola has been the key supplier for the microprocessors used in Commodore Amiga, Apple Macintosh and Power Macintosh personal computers. The chip used in the latter computers, the PowerPC family, was developed with IBM and in a partnership with Apple. Motorola also has a diverse line of communication products, including satellite systems, digital cable boxes and modems.

Tuesday, June 26, 2007

Coppicing

Coppicing is a conventional method of woodland organization in which young tree stems are cut down to a low level. In subsequent growth years, many new shoots will come out and after a number of years the cycle begins again and the coppiced tree, or stool, is ready to be harvested again.
Typically a coppice woodland is harvested in sections, on a rotation. In this way each year a crop is available. This has the side-effect of as long as a rich variety of habitats, as the woodland always has a range of dissimilar aged stools growing in it. This is helpful for biodiversity. The cycle length depends upon the species cut, the local custom, and the use to which the product is put. Birch can be coppiced for faggots on a 3- or 4-year cycle, whereas oak can be coppiced over a 50-year cycle for poles or firewood.

Friday, June 22, 2007

Ice

Ice is the name given to any one of the 14 known solid phases of water. Though in non-scientific contexts, it usually describes ice Ih, which is the most abundant of these phases. It is a crystalline solid, which can appear transparent or an opaque bluish-white color depending on the presence of impurities such as air. The addition of other materials such as soil may further alter appearance. The most common phase transition to ice Ih occurs when liquid water is cooled below 0 °C (273.15 K, 32 °F) at standard atmospheric pressure. However, it can also deposit from a vapor with no intervening liquid phase such as in the formation of frost. Ice appears in varied forms such as hail, ice cubes, and glaciers. It plays an important role with many meteorological phenomena. The ice caps of the polar regions are of significance for the global climate and particularly the water cycle.

Monday, June 18, 2007

Society

A society is a grouping of individuals, which is characterized by common interests and may have distinctive culture and institutions. In a society, members can be from a different ethnic group. A "Society" may refer to a particular people, such as the Nuer, to a nation state, such as Switzerland, or to a broader cultural group, such as a Western society. Society can also refer to an organized group of people linked together for religious, benevolent, cultural, scientific, political, patriotic, or other purposes.

Friday, June 15, 2007

Whale

The term whale is ambiguous: it can refer to all cetaceans, to just the larger ones, or only to members of particular families within the order Cetacea. The last definition is the one followed here. Whales are those cetaceans which are neither dolphins nor porpoises. This can lead to some confusion because Orcas ("Killer Whales") and Pilot whales have "whale" in their name, but they are dolphins for the purpose of classification.

Sunday, June 10, 2007

Pruning

Pruning in landscaping and farming is the practice of removing diseased, non-productive, or otherwise unwanted portions from a plant. The purpose of pruning is to shape the plant by controlling or directing plant growth, to maintain the health of the plant, or to increase the yield or quality of flowers and fruits. Proper pruning is as much a skill as it is an art, since badly pruned plants can become unhealthy or grow in undesirable ways.

Proponents of pruning, both gardeners and orchardists, often argue that it improves the health of the plant and makes sturdier structure, often referred to as the scaffold; opponents consider that pruning harms plants' "natural" forms.

Wednesday, June 06, 2007

Canonization

Canonization is the act by which a Christian Church declares some deceased person to be a saint, inscribing that person in the canon, or list, of recognized saints.

In the Catholic Church, the act of canonization is now kept to the Holy See and occurs at the conclusion of a long process requiring extensive proof that the person future for canonization lived, and died, in such a way that he or she is worthy to be recognized as a saint. at first, however, individuals were recognized as saints without any formal process, as happened, for instance, in the case of Saint Peter and the Blessed Virgin Mary. Other Christian Churches still follow the older practice
Canonization, whether formal or informal, does not make someone a saint: it is only a declaration that the person is a saint and was a saint even before canonization. It is generally familiar that there are many more saints in heaven than have been canonized on earth.

Thursday, May 31, 2007

People

People are a group of humans, either with not mentioned traits, or specific characteristics (e.g. the people of Spain or the people of the Plains).
The term people is often used in English as the suppletive plural of person. However, the word persons is sometimes used in place of people, particularly when it would be ambiguous with its collective sense (e.g. missing persons instead of missing people). The term people can together refer to all humans or it can be used to identify the citizens of a nation, or members of a tribe, ethnic, or religious group. People of color is a phrase used to describe people with skin color darker than that of white people.

Sunday, May 27, 2007

Veganism

Veganism (also known as strict vegetarianism or pure vegetarianism), as defined by the Vegan Society, is "a philosophy and way of living which seeks to exclude—as far as is possible and practical—all forms of exploitation of, and cruelty to, animals for food, clothing or any other purpose." A vegan (one who practices veganism) does not consume or use animal products, notably meat, fish, poultry, eggs and dairy products.People become vegans for a variety of reasons, including ethical concerns for animal rights or the environment, as well as supposed or real health benefits and spiritual or religious concerns.

Monday, May 21, 2007

Lighting rod

A lightning rod is a metal narrow piece or rod, typically of copper or similar conductive material, used as part of lightning security to guard tall or isolated structures from lightning damage. Its formal name is lightning finial. Sometimes, the system is informally referred to as:

A lightning conductor,
A lightning arrester, or
A lightning discharger.
However, these terms really refer to lightning guard systems in general or specific mechanism within them.

Lightning rod dissipaters make a structure less nice-looking by which charges can flow to the air around it. This then reduces the voltage between the point and the storm cloud, making a strike less likely. The most common charge dissipaters appear as slightly-blunted metal spikes sticking out in all information from a metal ball. These are mounted on short metal arms at the very top of a radio antenna or tower, the area by far most likely to be struck. These devices diminish, but do not eradicate, the risk of lightning strikes.

Wednesday, May 16, 2007

History of Personal computer

An near the beginning use of the term appeared in a November 3, 1962, New York Times
article exposure John W. Mauchly's vision of expectations computing spoken to a conference of the American Institute of Industrial Engineers that previous day. Mauchly told the gathering, "There is no reason to suppose the average boy or girl cannot be master of a personal computer."

The initial computers that can be called 'personal' were the first Non -main frame computers, the LINC and the PDP-8. By today's standards they were big, expensive, and had small magnetic core memories.

However, they were small and cheap for individual laboratories and research projects to use, freeing them from the consignment dispensation and establishment of the typical industrial or university computing center. In addition, they were reasonably interactive and soon had their own operating systems. Finally, this category became known as the mini-computer, usually with time-sharing and program development facilities. Ultimately, the mini-computer grew up to encompass the VAX and larger mini-computers from Data General, Prime, and others.
Deployment of mini-computer systems was a replica for how personal computers would be used, but few of the mini-computer makers managed to profit from it.

Sunday, May 13, 2007

Cold River (Maine)

The Cold River is a 16.4 mile long (26.5 km) river situated in western Maine in the United States. It very briefly enters New Hampshire as well. It is part of the Saco River drainage basin.
The Cold River begins at the height of land in Evans Notch, a pass through the eastern White Mountains. Maine Highway 113, a narrow two-lane road, passes through the notch, following the Cold River on the south side and Evans Brook, a tributary of the Androscoggin River, on the north. The Cold River, flowing south, picks up the Mad River, a short stream with waterfalls that flows off the southern faces of East Royce and West Royce mountains, then reaches the southern base of Evans Notch at the junction of Basin Brook, coming out of a large glacial cirque to the west, where the Cold River national forest campground is situated.
South of Basin Brook, the Cold River briefly enters New Hampshire near the village of North Chatham, then veers back into Maine, flowing south-southwest in the town of Stow through an ever-widening valley. The Little Cold River enters from the west near the village of Stow. The Cold River ends at Charles Pond in the northern corner of Fryeburg. Water flows from Charles Pond via the short Charles River, entering the Old Course of the Saco River and finally the Saco itself south of Kezar Pond.

Tuesday, May 08, 2007

Chocolate

Chocolate comprises a number of raw and processed foods that create from the seed of the tropical cacao tree. It is a common ingredient in many kinds of confections such as chocolate bars, candy, ice cream, cookies, cakes, pies, chocolate mousse, and other desserts. It is one of the most popular flavours in the world.
Chocolate was shaped by the Mesoamerican civilization, from cacao beans, and cultivated by pre-Columbian civilizations such as the Maya and Aztec, who used it as a basic part in a variety of sauces and beverages. The cocoa beans were ground and mixed with water to create a variety of beverages, both sweet and bitter, which were kept for only the highest noblemen and clerics of the Mesoamerican world. Chocolate is made from the fermented, roasted, and ground beans taken from the pod of the tropical cacao tree, Theobroma cacao, which was native to Central America and Mexico, but is now cultivated all through the tropics. The beans have an intensely flavoured bitter taste. The resultant products are known as "chocolate" or, in some parts of the world, cocoa.

Friday, May 04, 2007

Peafowl

The peafowl are the three variety of bird in the genera Pavo and Afropavo of the pheasant family, Phasianidae. They are most distinguished for the male's profligate tail, a result of sexual selection, which it displays as part of courtship. The male is called a peacock, the female a peahen. In common English custom, however, "peacock" is used to mean any peafowl.

Overview
The characteristic Asiatic peafowl belonging to the genus Pavo comprise the familiar Indian Peafowl, Pavo cristatus and the poorly known Dragon birds or Green Peafowl Pavo muticus. Some biologists believe that there are at least five characteristic and critically endangered species of Green Peafowl while others classify them into a single species with three species.

The Arakan Dragonbird Pavo spicifer was once inhabitant to Northern Western Myanmar, Southern Tibet and Assam. The Indo-Chinese or Siamese Dragon bird Pavo imperator was once native to South East Myanmar and Thailand. The Annametic Dragonbird Pavo annamensis occupied the broadleaf evergreen forests of Cambodia, Vietnam, Laos and Southern Yunnan China.
The Javanese Green Peafowl, Pavo javanensis is occupant only to the island of Java. The died out Malay or Pahang Peafowl Pavo muticus muticus was fantasy by early naturalists to least the Pliocene rules out an foreword by humans. Northern Yunnan is the home of one of the most fascinating forms of Green Peafowl. The Yunnan Dragonbird, Pavo yunnanensis is most characteristic.
When it is not in show, the long tail rests on the ground and hampers the actions of the peacock
The White Peacock is frequently incorrect for an albino, but is a color change

Monday, April 30, 2007

Door

A door is a makeup in a wall that allows easy transformation between an opening and a closed wall. It is establish in many houses and other buildings: internal ones, doors giving access to the street/external world, and doors to private outdoor areas such as a garden or balcony. In an apartment building, an midway kind is the outer door of an apartment, inside the building.
History
The first records are those represented in the paintings of the Egyptian tombs, in which they are shown as single or double doors, each in a single piece of wood. In Egypt, where the climate is intensely dry, there would be no fear of their warping, but in other countries it would be necessary to frame them, which according to Vitruvius was done with stiles and rails: the spaces enclosed being filled with panels let into grooves made in the stiles and rails. The stiles were the vertical boards, one of which, tenoned or hinged, is known as the hanging stile, the other as the middle or meeting stile. The horizontal cross pieces are the top rail, bottom rail, and middle or intermediate rails. The most ancient doors were in timber, those made for King Solomon's temple being in olive wood, which were fixed and overlaid with gold. The doors dwelt upon in Homer would appear to have been cased in silver or brass. Besides Olive wood, elm, cedar, oak and cypress were used.

All ancient doors were hung by pivots at the top and bottom of the hanging stile which worked in sockets in the lintel and cill, the final being always in some hard stone such as basalt or granite. Those found at Nippur by Dr. Hilprecht, dating from 2000 B.C. were in dolorite. The tenons of the gates at Balawat were covered with bronze. These doors or gates were hung in two leaves, each about 8 ft.4 in. wide and 27 ft. high; they were enclosed with bronze bands or strips, 10 in. high, covered with repouss embellishment of figures, etc. The wood doors would seem to have been about 3 in. thick, but the hanging stile was over 14 inches diameter. Other sheathings of various sizes in bust have been found, which proves this to have been the universal method adopted to protect the wood pivots. In the Hauran in Syria, where timber is scarce the doors were made in stone, and one measuring 5 ft. 4 in. by 2 ft. 7 in. is in the British Museum; the band on the meeting stile shows that it was one of the leaves of a double door. At Kuffeir near Bostra in Syria, Burckhardt found stone doors, 9 to 10 ft. high, being the entrance doors of the town. In Etruria many stone doors are referred to by Dennis.

Tuesday, April 24, 2007

Northern Mockingbird

The Northern Mockingbird, Mimus polyglottos, is the mockingbird commonly originate in North America.Adults are grey on the head and upperparts with pale yellow eyes and a slim black bill with a slight downward curve; the underparts are light. They have a long dark tail by means of white edges and long dark legs. They have white wing bars and show white wing patches in flight.Their breeding habitat is areas with a mix of open areas and dense shrubs from southern Canada to Mexico, but is most common in the southern United States. They build a twig nest in a dense shrub or tree. This bird forcefully defends its nest against other birds and animals, including humans. When a predator is persistent mockingbirds from adjacent territories, summoned by a distinct call, may join the attack. Other birds may gather to watch as the mockingbirds harass the intruder.
They are usually permanent residents; northern birds may move south during harsh weather. However, this species has occurred in Europe as an extreme rarity.These birds forage on the ground or in vegetation; they also fly down from a perch to capture food. They mainly eat insects and berries. While foraging they will regularly spread their wings in a peculiar two-step motion to display the white patches underneath. The purpose of this behavior is disputed. Some ornithologists claim this is merely a territorial display, while others say that flashing the white patches startles hiding insects and forces them into the open. Both theories seem to have some merit.
This bird imitates the calls of other birds, animal sounds and yet machine noises. It is often found in urban areas. They often call through the night and may continue year-round apart from for the summer moulting season. Mockingbirds usually sing the loudest in the twilight of the early morning when the sun is on the horizon. While singing on a high perch they will often bolt more than a few feet into the air in a looping motion, with wings outstretched to display their white underside, then land back on the perch without breaking a note. That serves as a territorial display.Mockingbirds have a strong preference for certain trees, such as maple, sweet gum (green 5-pointed leaves and prickly porous balls), and sycamore. They normally avoid pine trees. In urban areas, mockingbirds rarely come down to the ground, unlike most birds. Also, they have a particular preference for high places, such as the topmost branches of trees and the tops of telephone poles.

Wednesday, April 18, 2007

Radio clock

A radio clock is a clock that is synchronized by a time code bit stream transmitted by a radio transmitter associated to a time standard such as an atomic clock. The picture shows a type of radio controlled digital clock. With special mechanism, radio controlled analog clocks are also available.
A radio controlled clock consists of an antenna for intercepting the RF time code signal, a receiving circuit to exchange the time code RF signal into digital time code, and a controller circuit to decode the time code bit streams and to drive an output circuit which can be LCD in case of digital clocks or stepping motors in case of analog clocks.

Tuesday, April 10, 2007

Satellite phone

A satellite telephone, satellite phone, or satphone is a mobile phone that communicates directly with orbiting communications satellites. Depending on the architecture of a particular system, coverage may comprise the entire Earth, or only specific regions.
Satellite phone (Inmarsat)The mobile equipment, also known as a terminal or earth station, varies generally. A satellite phone handset has a size and weight comparable to that of a late 1980s or early 1990s cell phone, but with a large retractable antenna. These are popular on expeditions into remote areas where terrestrial cellular service is unavailable.
A fixed installation, such as used shipboard, may include large, rugged, rack-mounted electronics, and a steerable microwave antenna on the mast that mechanically tracks the overhead satellites.

Friday, April 06, 2007

Smartphone

A smartphone is any electronic handheld device that integrates the functionality of a mobile phone, personal digital assistant or other information appliance. This is frequently achieved by adding telephone functions to an existing PDA or putting "smart" capabilities, such as PDA functions, into a mobile phone. A key characteristic of a smartphone is that additional applications can be installed on the device. The applications can be developed by the manufacturer of the handheld device, by the operator or by any other third-party software developer.
It is increasingly difficult to define exactly what qualifies as a smartphone. Almost all new mobile phones have some rudimentary PDA functionality such as phonebooks, calendars, and task lists. Furthermore, BREW and Java ME devices allow for the installation of additional applications but are still not considered smartphones. There are many BREW devices with PDA functionality, the ability to run third-party applications in native code and sporting displays as large as 240x320 pixels; yet they are not considered smartphones. The elusive definition seems loosely tied to the particular operating systems listed below.

Monday, April 02, 2007

Sun

The Sun is the star at the centre of our Solar system. It is infrequently referred to as Sol to distinguish it from other "suns". Planet Earth orbits the Sun, as do many other bodies, with other planets, asteroids, meteoroids, comets and dust. Its heat and light support almost all life on Earth.
The Sun has a mass of about 2×1030kg, which is fairly higher than that of an average star. About 74% of its mass is hydrogen, with 25% helium and the rest made up of trace quantities of heavier elements. It is consideration that the Sun is about 5 billion years old, and is about half way through its main sequence evolution, throughout which nuclear fusion reactions in its core fuse hydrogen into helium. In about 5 billion years time the Sun will become a planetary nebula.
Although it is the nearest star to Earth and has been intensively studied by scientists, many questions about the Sun remain unanswered, such as why its outer atmosphere has a temperature of over 106 K when its visible surface has a temperature of just 6,000 K.
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