Wednesday, December 19, 2007
Hydrogen
The sun is basically a giant ball of hydrogen and helium gases. In the sun's core, hydrogen atoms combine to form helium atoms. This process—called fusion—gives off radiant energy.
This radiant energy sustains life on earth. It gives us light and makes plants grow. It makes the wind blow and rain fall. It is stored as chemical energy in fossil fuels. Most of the energy we use today came from the sun's radiant energy.
Hydrogen gas is lighter than air and, as a result, it rises in the atmosphere. This is why hydrogen as a gas (H2) is not found by itself on earth. It is found only in compound form with other elements. Hydrogen combined with oxygen, is water (H2O). Hydrogen combined with carbon, forms different compounds such as methane (CH4), coal, and petroleum. Hydrogen is also found in all growing things—biomass. It is also an abundant element in the earth's crust.
Hydrogen has the highest energy content of any common fuel by weight(about three times more than gasoline), but the lowest energy content by volume (about four times less than gasoline). It is the lightest element, and it is a gas at normal temperature and pressure.
Hydrogen
The sun is basically a giant ball of hydrogen and helium gases. In the sun's core, hydrogen atoms combine to form helium atoms. This process—called fusion—gives off radiant energy.
This radiant energy sustains life on earth. It gives us light and makes plants grow. It makes the wind blow and rain fall. It is stored as chemical energy in fossil fuels. Most of the energy we use today came from the sun's radiant energy.
Hydrogen gas is lighter than air and, as a result, it rises in the atmosphere. This is why hydrogen as a gas (H2) is not found by itself on earth. It is found only in compound form with other elements. Hydrogen combined with oxygen, is water (H2O). Hydrogen combined with carbon, forms different compounds such as methane (CH4), coal, and petroleum. Hydrogen is also found in all growing things—biomass. It is also an abundant element in the earth's crust.
Hydrogen has the highest energy content of any common fuel by weight(about three times more than gasoline), but the lowest energy content by volume (about four times less than gasoline). It is the lightest element, and it is a gas at normal temperature and pressure.
Friday, December 14, 2007
Cricket in India
In cities like Calcutta, with everybody glued to their TV sets, life grinds to a stop the progress of the days the Indian team is playing. One-day gear and test matches stimulate equal eagerness; for together, if the match is being played on Indian earth, which by the way supports spin slightly than pace, you’ll get aptitude crowds and a emotional atmosphere seldom matched anywhere outside the subcontinent. Allegations of murky match fixing and a fixed string of matches where the team managed to “grab defeat from the jaws of victory” notwithstanding, the attractiveness of the game continues to rise. Such is the strength of participation with the game that it even affects India’s international relationships. In the result of the 1999 Kargil war, India unilaterally overhanging cricketing relations with Pakistan. The discuss on whether politics and sports should mix enlivens many a discussion, and is yet unresolved.
Thursday, December 6, 2007
Christmas Day
To people all over the earth, Christmas is a flavor of giving and receiving presents. In some European countries, priest Christmas, or Saint Nicholas, comes into houses in the night and leaves gifts for the children. Saint Nicholas is represented as a kindheartedly man with a red cloak and long white beard. Another nature, the Norse God Odin, ride on a mysterious flying horse across the sky in the winter to prize people with gifts. These different myths passed across the ages to make the present day Santa Claus.
On December 24, Christmas Eve, Santa hitches his eight reindeer to a toboggan and loads it with presents. The reindeer drag him and his sleigh through the sky to deliver presents to children all around the earth, that is, if they had been good all year. Several American towns maintain the strength of Santa Claus.
Santa Claus exists only in our imagination. But he, Saint Nicholas, and father Christmas are feelings of giving. Christmas has been associated with gift giving since the Wise Men brought gifts to welcome the newborn Jesus Christ.In eagerness of Santa's visit, American children pay attention to their parents read "The Night previous to Christmas" before they go to bed on Christmas Eve
Wednesday, November 28, 2007
Abraham Lincoln
Called upon to vote for 16th President of the United States. The Democratic Party meets at its National Party Convention in Charleston, South Carolina, in order to choose their candidate in favor of the presidency. Split over slavery, each section, Northern Democrats on the one hand and Southern Democrats on the other, presented its own conflicting proposal for the party platform.
In February 1860, Senator Jefferson Davis of Mississippi claimed that neither the Congress of the United States nor the territorial parliaments had the control to handle slavery.
Tuesday, November 20, 2007
The Banyan Tree
Its size and leafy shelter are valued in India as a place of relax and mirror image, not to mention defense from the hot sun! It is still the focus and gathering place for local councils and meetings. India has a long history of worship this tree; it figures importantly in many of the oldest stories of the nation.
Tuesday, November 13, 2007
Adam Sandler: the Funniest man Alive!
What is Your Name continues the musical tradition Sandler began with at a standard Pace, Ode to My Carnd the extremely popular The Chanukah Song. With two platinum-selling, Grammy-nominated albums - They're All Gonna Laugh at you and What the Hell Happened to Me - Already to his credit, Sandler goes for a comedy-three peat with what’s Your Name. The move to an all-music format is a normal one, following his 21 city tour last summer, when he perform both creative material and his favorite childhood tunes, backed by a finest rock and roll band.
Wednesday, October 24, 2007
A Team Player
Managers will require all the cooperation they can get. To land a high paying job with a major business you need to be a team player. Having good qualities is one of the most significant characters you can have. Being a team performer thinks of the team as a whole and is not selfish in their views and decisions.
Tuesday, October 16, 2007
A Snapshot of Macro-Economics
Studying the world economy is classified as Macroeconomics; its center on a much broader level. All students must understand the concept of insufficiency. Scarcity is a condition that occurs because society has unlimited wants and needs however the amount of property is limited. Unlimited wants and needs are what encourage us to create goods and services. We are never satisfied therefore we always have a want or need. On the other hand our income is limited.
Tuesday, October 9, 2007
A simple Girl
Life was simply the stack of decayed flesh that enclosed her. From his immortal lips hung the bodies of all those who died struggle for him and all those who had tampered with self luxury. For that, she dammed him for all eternity; in every form he understood she dammed him. He had been her guiding angle and now it became evident to her. No prayer would pass her conditions lips, for this had been his movement she had fought and they had lost other than just a clash.
Tuesday, September 25, 2007
A Civil Role Model
These are thoughts that were measured during the class viewing of A Civil Action. In the events of the case, there were many concerns that were brought up about our permissible culture.
Tuesday, September 18, 2007
A cold winter morning
I open my eyes; I am gloomy, lifeless room. My alarm clock is going off and the sound can only be compared with exhausted your fingernails across a chalkboard.
Friday, September 14, 2007
A Business Plan
The Orange Cup will provide for the Doane College Community a comfortable atmosphere while serve quality coffee at a reasonably priced with extraordinary service. An ample variety of coffee products including, gourmet coffees, latte, cappuccino, espresso, and iced coffee, will be offered at The Orange Cup. In addition, The Orange Cup will recommend juice, pop, and bottled water, hot cocoa, hot cider, and tea.
The marking plan for The Orange Cup is to attract students and staff to the coffeehouse to continue in a relaxed atmosphere, or for those customers with excited schedules, the expediency of our products.
Tuesday, August 28, 2007
Turmeric
Its rhizomes are boil for several hours and then dried in hot ovens, after which they are position into a deep orange-yellow powder generally used as a flavor in curries and for dyeing, other South Asian cuisine, and to impart color to mustard condiments. Its active component is curcumin and it has an bitter, earthy, peppery flavor.Sangli, a town in the southern part of the Indian state of Maharashtra, is the largest and most important trade centre for turmeric in Asia or maybe in the entire world.
Tuesday, August 21, 2007
Cucumber
Cucumbers can be pickled for taste and longer shelf life. As compare to eating cucumbers, pickling cucumbers tend to be shorter, thicker, less regularly-shaped, and have rough skin with tiny white- or black-dotted spines. They are not at all waxed. Color can be different from creamy yellow to pale or dark green. Pickling cucumbers are sometimes sold fresh as "Kirby" or "Liberty" cucumbers. The pickling practice removes or degrades a large amount of the nutrient content, particularly that of vitamin C. Pickled cucumbers are waterlogged in vinegar or brine or a combination, often along with a mixture of spices.
• English cucumbers can cultivate as long as 2 feet. They are nearly seedless and are sometimes marketed as "Burp less."
• Japanese cucumbers (kyÅ«ri) are mild, deep green, slenderand have a bumpy, ridged skin. They can be used for slicing, pickling, salads, etc., and are available year-round.
• Mediterranean cucumbers are smooth-skinned, small and mild. Like the English and Mediterranean cucumbers are nearly seedless.
Tuesday, August 14, 2007
Java
Java shaped mostly as the result of volcanic events, Java is the 13th leading island in the world and the fifth major island of Indonesia. A sequence of volcanic mountains forms an east-west spine along the island. It has three main languages, and most populace are bilingual, with Indonesian as their second language. While the popular of Javanese are Muslim (or at least supposedly Muslim), Java has a different mixture of religious beliefs and cultures.
Tuesday, August 7, 2007
Electromagnetic hypersensitivity syndrome
Tuesday, July 31, 2007
Nutrition
Deficienciess, excesses and imbalances in diet can produce negative impacts on health, which may lead to diseases such as cardiovascular disease, diabetes, scurvy, fatness or osteoporosis, as well as mental and behavioral troubles.
Moreover, unnecessary intake of elements that have no perceptible role in health, (e.g. lead, dioxins, mercury, PCBs), may incur toxic and potentially fatal effects, depending on the dosage.Many familiar diseases and their symptom can often be prevented or alleviated with better nutrition. The science of nutrition attempts to be aware of how and why specific nutritional aspects influence health.
Tuesday, July 24, 2007
Java coffee
Java coffee is a coffee bent on the
A rust disease in the late 1880s killed off much of the plantation stocks in Sukabumi, before distribution to
Tuesday, July 17, 2007
The risks of obsessive love
Since compulsive love is more of a fantasy than really falling in love with an actual person, it can show the way to dangerous results depending on how far the obsession grows. Obsessive love can cause stalking, rape, murder, and other hurtful things to the target of obsessive love or anyone the person believes is “in the way” of their delusion. In one casing, John Hinckley’s obsession for actress Jodie Foster caused him to attempt an assassination on ex- President Ronald Reagan, for the reason that he believed it would grab her attention.
Sunday, July 8, 2007
CPU Socket
Most CPU sockets and processors in use today are built around the pin grid array (PGA) architecture, in which the pins on the base of the processor are inserted into the socket. To aid installation, zero insertion force (ZIF) sockets are usually used, allowing the processor to be inserted without any confrontation, while gripping the pins firmly once the processor is in place to ensure a reliable contact. In contrast to CPU sockets, slot-based processors and CPUs use a single-edged connection rather than a socket, and slot into the motherboard on their side. Slot architectures are not often used today
Tuesday, July 3, 2007
Cotton
Cotton fibre, once it has been processed to remove seeds and traces of wax, protein, etc., consists of nearly pure cellulose, a natural polymer. Cotton manufacture is very efficient, in the sense that ten percent or less of the weight is lost in following processing to convert the raw cotton bolls into pure fibre. The cellulose is arranged in a way that gives cotton fibres a high degree of strength, durability, and absorbency. Each fibre is made up of twenty to thirty layers of cellulose coiled in a neat series of natural springs. When the cotton boll is opened, the fibres dry into flat, twisted, ribbon-like shapes and become kinked together and interlocked. This interlocked form is ideal for spinning into a fine yarn.
Saturday, June 30, 2007
Scientific Methods
Scientists use models to refer to a explanation or depiction of something, specifically one which can be used to construct predictions that can be tested by experiment or observation. A hypothesis is a disputation that has been neither well supported nor yet ruled out by experiment. A theory, in the context of science, is a logically self-consistent model or framework for recitation the behavior of certain natural phenomena. A theory typically describes the behavior of much broader sets of phenomena than a hypothesis — commonly, a large number of hypotheses may be logically bound together by a single theory. A physical law or law of nature is a scientific generalization based on a adequately large number of empirical observations that it is taken as fully verified.
Tuesday, June 26, 2007
Grafting
In most cases, one plant is chosen for its roots, and this is called the stock or rootstock. The other plant is chosen for its stems, leaves, flowers, or fruits and is called the scion.
In stem grafting, a common grafting method, a shoot of a chosen, desired plant cultivar is grafted onto the stock of another type. In another common form called budding, a dormant side bud is grafted on the stem of another stock plant, and when it has fused successfully, it is encouraged to grow by cutting out the stem above the new bud.
For successful grafting to take place, the vascular cambium tissues of the stock and scion plants must be located in contact with each other. Both tissues must be kept alive till the graft has taken, typically a period of a few weeks. Successful grafting only requires that a vascular connection takes place between the two tissues. A physical weak point often still occurs at the graft, because the structural tissue of the two distinct plants, such as wood may not fuse.
Friday, June 22, 2007
Society
Monday, June 18, 2007
JAR
* WAR (file format) (Web Application aRchive) files are also Java archives which store XML files, java classes, Java Server Pages and other objects for Web Applications.
* EAR (file format) (Enterprise ARchive) files are also Java archives which store XML files, java classes and other objects for Enterprise Applications.
* RAR (file format) (Resource Adapter aRchive) files are also Java archives which store XML files, java classes and other objects for J2EE Connector Architecture (JCA) applications.
JAR files can be created and extracted using the "jar" command that comes with the JDK. It can be done using zip tools, but as WinZip has a habit of renaming all-uppercase directories and files in lower case, this can raise support calls with whoever shaped the JAR or the tool authors themselves. WinRAR, on the other hand, retains the original case of filenames.
A JAR file has a manifest file located in the path META-INF/MANIFEST.MF. The entries in the manifest file determine how the JAR file will be used. JAR files which are intended to be executed as standalone programs will have one of their classes specified as the "main" class. The manifest file would have an entry such as
Main-Class: myPrograms.MyClass
Such JAR files are typically started with a command similar to
java -jar foo.jar
These files can also include a Classpath entry, which identifies other JAR files to be loaded with the JAR. This entry consists of a list of absolute or relative paths to other JAR files. Although intended to simplify JAR use, in practice, it turns out to be notoriously brittle as it depends on all the relevant JARs being in the exact locations specified when the entry-point JAR was built. To change versions or locations of libraries, a new manifest is needed.
Friday, June 15, 2007
Fish food
Sunday, June 10, 2007
Lopping
Lopping in many cases is careful an inappropriate pruning method for amenity trees. The lopped stubs may regrow adventitious epicormic shoots which are bonded only to the bark. These epicormic shoots can grow dynamically and, unless regularly pruned off, may outgrow the original height and spread of the tree. Further, the ends of the lopped stubs are exposed to pathogens which may enter and infect the tree.
In orchards, fruit trees are often lopped to encourage regrowth and to keep a smaller tree for ease of picking fruit. The pruning regime in orchards is more intended and the productivity of each tree is an important factor. In an orchard, though, the natural longevity of a tree is often compromised in favor of its output in fruiting. Orchard trees are also carefully monitored and treated with fungicides and insecticides to minimise losses.
Wednesday, June 6, 2007
Camera
Cameras may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum. A camera normally consists of some kind of enclosed hollow, with an opening or aperture at one end for light to enter, and a recording or viewing surface for capturing the light at the other end. Most cameras have a lens positioned in front of the camera's opening to gather the incoming light and to focus the image, or part of the image, on the recording surface. The diameter of the aperture is often controlled by a diaphragm mechanism, but some cameras have a fixed-size aperture.
Thursday, May 31, 2007
Kolkata
The city was very populated and served as the capital of India during the British Raj until 1911. Once the centre of modern education, science, culture and politics in India, Kolkata witnessed economic stagnation in the years following India's independence in 1947. However, since the year 2000, an economic rejuvenation has arrested the morbid decline, leading to a spurt in the city's growth. Like other large cities, Kolkata continues to struggle with urbanisation problems like poverty, pollution and traffic congestion.
A vibrant city with a distinct socio-political culture, Kolkata is noted for its revolutionary history, ranging from the Indian struggle for independence to the leftist and trade union movements.
Sunday, May 27, 2007
Ghost ride
Ghost riding is one of the latest trends to be popularized by hyphy culture, which originated in Oakland, California. The act is one of the highest forms of "going dumb" and a representation of the style of hyphy. The term "ghost ride the whip" was given nationwide exposure in E-40's 2006 song "Tell Me When to Go".As with car surfing, ghost riding can be dangerous and has resulted in three known deaths in North America.
Ghost riding is also known as "going Patrick Swayze," or just "going Swayze," referring to Patrick Swayze's lead role in the movie Ghost.
Monday, May 21, 2007
Cream
Cream produced by cows (particularly Jersey cattle) grazing on usual pasture often contains some natural carotenoid pigments derived from the plants they eat; this gives the cream a slight yellow tone, hence the name of the yellowish-white colour cream. Cream from cows fed indoors, on grain or grain-based pellets, is white.
Wednesday, May 16, 2007
Solar System
In wide terms, the charted regions of the Solar System consist of the Sun, four terrestrial inner planets, an asteroid belt composed of small rocky bodies, four gas giant outer planets, and a second belt, called the Kuiper belt, collected of icy objects. Beyond the Kuiper belt lies the scattered disc, the heliopause, and eventually the hypothetical Oort cloud.
In sort of their distances from the Sun, the planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Six of the eight planets are in turn orbited by natural satellites, usually termed "moons" after Earth's Moon, and each of the outer planets is encircled by planetary rings of dust and other particles. All the planets apart from Earth are named after gods and goddesses from Greco-Roman mythology. The three dwarf planets are Pluto, the largest known Kuiper belt object; Ceres, the largest object in the asteroid belt; and Eris, which lies in the scattered disc.
Sunday, May 13, 2007
Resonator
A distributed parameter resonator of the distributed network kind has capacitance, inductance, and resistance which cannot be isolated into separate lumped capacitors, inductors, or resistors. The time factor of spread of wave energy in the network is appreciable. Resonators can be of the dielectric type or magnetic type. A hollow conductor that uses resonance to increase an electromagnetic wave is called a cavity resonator. In the context of electronic components, resonator may refer to a ceramic resonator, a device used to create an oscillation of a specific frequency, first and foremost for use as the clock signal for digital circuits. A single layer coil (or solenoid) that is used as a secondary or tertiary winding in a Tesla Coil or Magnifying Transmitter is also called a resonator.
Tuesday, May 8, 2007
Lavender
Lavenders are extensively grown in gardens. Flower spikes are used for dried flower arrangements. The fragrant, pale purple flowers and flower buds are used in potpourris. Dried and sealed in pouches, they are located among stored items of clothing to give a fresh fragrance and as a deterrent to moths. The plant is also full-grown commercially for extraction of lavender oil from the flowers. This oil is used as an antiseptic and for aromatherapy.
Friday, May 4, 2007
Willamette Valley
Description
The valley may be insecurely defined as the watershed of the Willamette, bounded on the west by the Coast Ranges, on the east by the Cascade Range. It is bounded on the south by the Calapooya Mountains, which separate the headwaters of the Willamette from the Umpqua River valley. Because of the differing cultural and political interests, the Portland metropolitan area, as well as the Tualatin River valley, is often disincluded in the local use of the term. Cities for all time considered part of the Willamette Valley are Eugene, Corvallis, Albany, and Salem.
The agricultural richness of the valley is considered to be in no small measure a result of the Missoula Floods, which inundated the valley just about forty times between 15,000 and 13,000 years ago at the end of the last ice age. The floods were caused by the intervallic rupturing of the ice dam of Glacial Lake Missoula, the waters of which swept down the Columbia and flooded the Willamette Valley as far south as Eugene. The floodwaters carried rich volcanic and glacial soil from Eastern Washington, which was deposited across the valley floor when the waters subsided.
The main agricultural products of the valley include many varieties of berries and vegetables. The valley also produces mainly of the grass seed, Christmas trees and hazelnuts sold in North America. But it is greenhouse and nursery stock that have become the biggest agricultural commodity in the valley.
In current decades, the valley has also become a major wine producer, with multiple American Viticultural Areas of its own. With a cooler climate than California, the gently rolling hills surrounding the Willamette are home to some of the best pinot noir in the New World, as well as a high-quality pinot gris.
Monday, April 30, 2007
Artistamp
Techniques for the creation of artist amps may or may not include perforating the boundaries of the piece to more resemble a stamp, as well as applying gum to the reverse side of the paper. Whole sheets of such stamps are often made at one time. The artwork can be hand-drawn or painted, lithographed or offset-printed, photographed, Xeroxed, rubber stamped, or even output by computer-driven printer.
Creators of art within this genre include Donald Evans, Anna Banana, Steve Smith and the surprisingly prolific New Zealander Bruce Henderson. Henderson's output spans more than three decades and encompasses an entire alternative universe of artist amp countries. These include the Sultanate of Occussi-Ambeno, the Kingdom of all the Sedan, the Sultanate of Upper Yafa, the People's Republic of Kemp land, the Free Vineland Republic, the Republic of Liegerland, the Republic of Port Maria, Tui Tui, Aldabra, Karenni, Raoul, the Land of Muggy, Terra Candella, Cryonica, Aramoana, Whangamomona, Laré, Nova Arcadia, the Antarctic Confederation and the Khanate of Bokhara. Henderson's artist amp world even has its own imaginary "United Nations," the "International Council of Independent States". His creations are sometimes identified as micro nations, however, being completely imaginary and without "participants", they do not fit the definition.
Tuesday, April 24, 2007
Northern Cardinal
Males are bright, deep red with black faces and red beaks. Females are lighter, with frequently grayish-brown tones. Both possess prominent raised crests and strong beaks. Cardinals are abundant across the eastern United States from Maine to Texas and in Canada in the provinces of Ontario, Quebec, and Nova Scotia. Their variety extends west to the U.S.-Mexico border and south through Mexico to the Isthmus of Tehuantepec, northern Guatemala, and northern Belize. They have been introduced in Bermuda, Hawaii, and Southern California. Their usual habitats are woodlands, suburbs, gardens, swamps and thickets.
The male sings in a loud, clear whistle from a tree top to protect his territory, which he jealously guards. He will chase off other males. The pair sometimes sing together before nesting and the male may feed his mate. The female builds a cup nest in a well-concealed spot in dense shrub or a low tree. Both feed the young. Young fledged cardinals resemble adult females in coloring. The male will grow in bright red feathers as he matures and is eventually chased away by his sire.
Wednesday, April 18, 2007
Aircraft
Categories and sorting
Aircraft fall into two broad categories:
Heavier than air
Heavier than air aerodynes, including autogiros, helicopters and variants, and conventional fixed-wing aircraft. Fixed-wing aircraft generally use an internal-combustion engine in the form of a piston engine or a turbine engine, to supply thrust that moves the craft forward through the air. The movement of air over the airfoil produces lift that causes the aircraft to fly. Exceptions are gliders which have no engines and gain their thrust, initially, from winches or tugs and then from gravity and thermal currents. For a glider to maintain its forward speed it must descend in relation to the air. Helicopters and autogiros use a rotating rotor to provide lift; helicopters also use the rotor to provide thrust. The short form of VTOL is applied to aircraft other than helicopters that can take off or land vertically. STOL is Short Take Off and Landing.
Lighter than air
A hot air balloon takes off from Royal Victoria Park, Bath, EnglandLighter than air aerostats: hot air balloons and airships. Aerostats use resilience to float in the air in much the same manner as ships float on the water. In particular, these aircraft use a comparatively low density gas such as helium, hydrogen or heated air, to displace the air around the craft. The distinction between a balloon and an airship is that an airship has some means of controlling both its forward motion and steering itself, while balloons are carried along with the air stream.
Tuesday, April 10, 2007
Transistor
In essence, a transistor have three terminals. A current or voltage applied through/across two terminals controls a larger current through the other terminal and the common terminal. In analog circuits, transistors are used in amplifiers. Analog circuits comprise audio amplifiers, stabilised power supplies and radio frequency amplifiers. In digital circuits, transistors function basically as electrical switches. Digital circuits include logic gates, RAM (random access memory) and microprocessors.
Transistor was also the common name in the sixties for a transistor radio, a portable radio that used transistors (rather than vacuum tubes) as its active electronic components. This is still one of the dictionary definitions of transistor.
Friday, April 6, 2007
Space missions
The first such mission was the Sputnik I mission, launched October 4, 1957. Some missions are more appropriate for unmanned missions rather than manned space missions, due to lower cost and lower risk factors.
Since the early 1970s, most unmanned space missions have been based on space probes with built-in mission computers, and as such may be classified as embedded systems.
Most American unmanned missions have been synchronized by the Jet Propulsion Laboratory, and European missions by the European Space Operations Centre, part of ESA (the European Space Agency).
ESA has conducted comparatively few space exploration missions. ESA has, however, launched a variety of spacecraft to carry out astronomy, and is a collaborator with NASA on the Hubble Space Telescope.
There has been a large number of very successful Russian space missions. There were also a few Japanese and Chinese missions.
Monday, April 2, 2007
Rail transport
Rail transport is one of the most energy well-organized means of mechanised land transport known. The rails give very smooth and hard surfaces on which the wheels of the train may roll with a minimum of friction. This is more comfortable and saves energy. Trains also have a small frontal area in relation to the load they are carrying, which cuts down on air resistance and thus energy usage. In all, under the right circumstances, a train needs 50-70% less energy to transport a given tonnage of freight, than by road. Furthermore, together with the sleepers the rails share out the weight of the train evenly, allowing significantly greater loads per axle/wheel than in road transport.
Rail transport is also one of the safest modes of transport, and also makes a very efficient use of space: a double tracked rail line can carry more passengers or freight in a given amount of time, than a four-laned road.
Thursday, March 29, 2007
London Gatwick Airport
Gatwick is the busiest single-runway airport in the world, handling over 31 million passengers yearly, flying to around 200 destinations. Charter airlines are normally not allowed to operate from Heathrow and many use Gatwick instead as their base. Many flights to and from the USA also use Gatwick because of restrictions on transatlantic operations from Heathrow. The airport is also a secondary hub for British Airways and Virgin Atlantic.
In 1979, when the last major expansion took place, an agreement was reached with the local council not to expand further before 2019, but recent proposals to build a second runway at Gatwick led to protests about increased noise and pollution and demolition of houses and villages. The government has now decided to expand Stansted and Heathrow but not Gatwick. Gatwick's owners BAA contain published a new consultation which includes a possible second runway south of the airport, but leaves the villages of Charlwood and Hookwood, north of the airport, intact.
In common with many airports car parking is in limited supply, in part due to local planning restrictions, and facilities are full to capacity in the summer months
Monday, March 26, 2007
Radio clock
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.
Wednesday, March 21, 2007
Sagebrush
Sagebrush has a strong pungent fragrance, particularly when wet, which is not unlike common sage. It is, however, dissimilar to common sage and has a bitter taste. It is thought that this odor serves to discourage browsing.
Sagebrush leaves are wedge-shaped, and are attached to the branch by the narrow end. The outer and wider end is usually divided into three lobes (although leaves with two or four lobes are not uncommon), hence the scientific name tridentata. The leaves are enclosed with fine silvery hairs, which are thought to keep the leaf cool and minimize water loss. Most of the leaves are carried year-round, as sagebrush tends to grow in areas where winter precipitation is greater than summer precipitation.
sagebrush leaves compare favorably to alfalfa for livestock nutrition value. However, they also have oils that are toxic to the symbiotic bacteria in the rumen of most ruminants. These oils have the most effect on cattle. Cattle that resort to sagebrush due to the lack of other fodder in the winter often freeze to death before starving, as they rely in large part on the heat of their digestive action for warmth. Ranchers call this condition "hollow belly". Sheep can stand moderate consumption of sagebrush leaves, especially the fresh spring buds. Pronghorn are the only large herbivore to browse sagebrush extensively. As pronghorn are the only remaining big herbivore that evolved along with sagebrush (deer are a more recent arrival from Asia), this is not surprising. There is speculation that some of the herbivores that went extinct in North America at the end of the Pleistocene such as the Ground Sloth or the American Camel were also capable of browsing sagebrush.
Sagebrush flowers in the late summer or early fall. The flowers are yellow and are carried in long, slender clusters.
Friday, March 16, 2007
Antarctic flora
There are more than 200 species of lichens and approximately 50 species of bryophytes, such as mosses. Seven hundred types of algae exist, most of which are phytoplankton. Multicolored snow algae and diatoms are particularly abundant in the coastal regions during the summer. There are two species of flowering plants found in the Antarctic Peninsula: Deschampsia antarctica (Antarctic hair grass) and Colobanthus quitensis (Antarctic pearlwort).
Sunday, March 11, 2007
Recreation
Tuesday, March 6, 2007
Sit flying
The correct position for flying a sit is to orient yourself feet first in the direction of the relative wind and maintain 90-degree angle bends at the knees, hips, and shoulders. Wind from the tunnel or from free-fall should be hitting the flyer on the feet, hamstrings, bottom, and the underside of the arms. To move about relative to the tunnel or other jumpers, the flyer simply redirects the airflow the opposite direction the jumper wants to go. Newtonian mechanics then push the flyer in the preferred direction. Fall rate changes (descending faster or slower) can also be made. This is done by presenting more surface area (wide legs and arms, higher drag, slower fall rate) or less surface area (arms up or even stand up, less drag, faster fall rate) from the flyers body to the wind.
Thursday, March 1, 2007
Minerals and rocks
Commercially costly minerals and rocks are referred to as industrial minerals. Rocks from which minerals are mined for economic purposes are referred to as ores (the rocks and minerals that remain, after the desired mineral has been separated from the ore, are referred to as tailings).
Sunday, February 25, 2007
Fever
The elevation in thermoregulatory set-point means that the previous "normal body temperature" is considered hypothermic, and effector mechanisms kick in. The person who is increasing the fever has a cold sensation, and an increase in heart rate, muscle tone and shivering attempt to counteract the perceived hypothermia, thereby reaching the new thermoregulatory set-point.
Tuesday, February 20, 2007
Storage of vegetables
During storage leafy vegetables lose moisture and vitamin C degrades quickly. They must be stored for as short a time as possible in a cool place in a container, such as a plastic bag.
Many root vegetables can be stored during winter in a root cellar. Care should be taken in kind the properties and vulnerabilities of the particular roots to be stored. Many can last through to early spring and be nearly as healthful as when fresh.
Wednesday, February 14, 2007
Cooking apple
Sunday, February 11, 2007
Cloud
Monday, February 5, 2007
Public transport
Friday, January 26, 2007
Journalism Basics
That's not all, though. In addition to dedicated training in writing, editing, and reporting, Journalism wants a working knowledge of history, culture, and current events. You'll more than likely be required to take up a broad range of courses that runs the range from statistics to the hard sciences to economics to history. There would also be a lot of haughty talk about professional ethics and civic responsibility too - and you'll be tested on it. To top it all off, you'll perhaps work on the university newspaper or radio station, or possibly complete an internship with a magazine or a mass media conglomerate.