What is fluency

Fluency is the ability to speak (and
understand) English quickly and easily..
. WITHOUT translation.
In fact, you speak and understand instantly.

Fluency is your goal.

**There Is Only One Way To Get Fluency

The research is clear-- there is only ONE way to get fluency.
You must have a lot of understandable repetitive listening.


That is the ONLY way.


Both of those words are important-- Understandable and Repetitive.
If you don't understand, you learn nothing. You will not improve.
*Understanding is Only Half The Formula

Understanding is not enough. You must also have a lot of repetition.
If you hear a new word only once, you will soon forget it.


You must hear new words and new grammar many many times before you
will understand them instantly.
That's why you must listen to the Mini-Stories, the Vocab Lessons,


The Point-of-View Stories, and the Audio articles many times.

You should listen to every lesson at least 30 times.

After 6-8 months,
your speaking is faster and better. It happens automatically.
You don't need to think.

Earth

Home to millions of species,^[11] including humans, Earth is the only place in the universe where life is known to exist. The planet formed 4.54 billion years ago,^[12] and life appeared on its surface within a billion years. Since then, Earth's biosphere has significantly altered the atmosphere and other abiotic conditions on the planet, enabling the proliferation of aerobic organisms as well as the formation of the ozone layer which, together with Earth's magnetic field, blocks harmful radiation, permitting life on land.^[13] The physical properties of the Earth, as well as its geological history and orbit, allowed life to persist during this period. The world is expected to continue supporting life for another 1.5 billion years, after which the rising luminosity of the Sun will eliminate the biosphere.^[14]

Earth's outer surface is divided into several rigid segments, or tectonic plates, that gradually migrate across the surface over periods of many millions of years. About 71% of the surface is covered with salt-water oceans, the remainder consisting of continents and islands; liquid water, necessary for all known life, is not known to exist on any other planet's surface.^{[note 5][note 6]} Earth's interior remains active, with a thick layer of relatively solid mantle, a liquid outer core that generates a magnetic field, and a solid iron inner core.

Earth interacts with other objects in outer space, including the Sun and the Moon. At present, Earth orbits the Sun once for every roughly 366.26 times it rotates about its axis. This length of time is a sidereal year, which is equal to 365.26 solar days.^{[note 7]} The Earth's axis of rotation is tilted 23.4° away from the perpendicular to its orbital plane,^[15] producing seasonal variations on the planet's surface with a period of one tropical year (365.24 solar days). Earth's only known natural satellite, the Moon, which began orbiting it about 4.53 billion years ago, provides ocean tides, stabilizes the axial tilt and gradually slows the planet's rotation. Between approximately 4.1 and 3.8 billion years ago, asteroid impacts during the Late Heavy Bombardment caused significant changes to the surface environment.

Both the mineral resources of the planet, as well as the products of the biosphere, contribute resources that are used to support a global human population. The inhabitants are grouped into about 200 independent sovereign states, which interact through diplomacy, travel, trade and military action. Human cultures have developed many views of the planet, including personification as a deity, a belief in a flat Earth or in Earth being the center of the universe, and a modern perspective of the world as an integrated environment that requires stewardship.

Prayer

Can we touch the soul of heaven
Can we unite a sacred lesson
Every child creates a skylight of beauty
Can you hear cathedrals falling
All the universe is calling
Cry a single cello from your heart
Since the world has lost her way
Loneliness journey endlessly
Yet the promised chance remains
Gifts of what could be
So let the children remember the sun
Let them dance let them soar
For their lives have begun
Let the children engender the rain
As the river runs through fields
Forever subsiding their pain
Prayer
Every voice along the shoreline
Standing still within time
Spinning unresolved the walking
As each season passes
Through wonderland and looking glasses
The secret garden shires beckon's you
Gentle flower, don't fade away
Sweet innocent still harbors thee
In faith of garden dreams
Where one love lives eternally
Let the children remember the sun
Let them dance let them soar
For their lives have begun
Let the children engender the rain
As the river runs through fields
Forever subsiding their pain
Prayer
Prayer
Prayer
Bless the children for they are the light
They are the truth of spirit in flight
Yes the children engender the rain
As the river runs through life
Healing their pain
If you could trust with your heart but for time
Sweet angels, conceive you have
Forever and always believed Prayer
Prayer
Prayer
Prayer

Suicide

Suicide (Latin suicidium, from sui caedere, to kill oneself) is the intentional killing of one's self. Many dictionaries also note the metaphorical sense of "willful destruction of one's self-interest"^[1]physical pain, emotional pressure, anxiety, financial difficulties, or other undesirable situations. The World Health Organization noted that over one million people commit suicide every year, and that it is one of the leading causes of death among teenagers and adults under 35.^[2] There are an estimated 10 to 20 million non-fatal attempted suicides every year worldwide.^[3] (e.g., "political suicide"). Suicide may occur for a number of reasons, including depression, shame, guilt, desperation,

Views on suicide have been influenced by cultural views on existential themes such as religion, honor, and the meaning of life. The Abrahamic religions consider suicide an offense towards God due to religious belief in the sanctity of life. In the West it was often regarded as a serious crime. Japanese views on honor and religion led to seppuku, one of the most painful methods of suicide, to be respected as a means to atone for mistakes or failure, or as a form of protest during the samurai era. In the 20th century, suicide in the form of self-immolation has been used as a form of protest, and in the form of kamikaze and suicide bombing as a military or terrorist tactic. Sati is a Hindu funeral practice in which the widow would immolate herself on her husband's funeral pyre, either willingly, or under pressure from the family and in-laws.^[4]

Medically assisted suicide (euthanasia, or the right to die) is currently a controversial ethical issue involving people who are terminally ill, in extreme pain, and/or have minimal quality of life through injury or illness. Self-sacrifice for others is not usually considered suicide, as the goal is not to kill oneself but to save another.

Over fifty percent of suicides are related to alcohol or drug dependence. Approximately 25 percent of drug addicts and alcoholics commit suicide. In adolescents the figure is higher with alcohol or drug misuse playing a role in up to 70 percent of suicides.^[5] The predominant view of modern medicine is that suicide is a mental health concern, associated with psychological factors such as the difficulty of coping with depression, inescapable suffering or fear, or other mental disorders and pressures. A suicide attempt is sometimes interpreted as a "cry for help" and attention, or to express despair and the wish to escape, rather than a genuine intent to die.^[6] Most people who attempt suicide do not complete suicide on a first attempt; those who later gain a history of repetitions have a significantly higher probability of eventual completion of suicide.^[7]

Remorse

Remorse is an emotional expression of personal regret felt by a person after he or she has committed an act which they deem to be shameful, hurtful, or violent. Remorse is closely allied to guilt and self-directed resentment. When a person regrets an earlier action or failure to act, it may be because of remorse or in response to various other consequences, including being punished for the act or omission. In a legal context, the perceived remorse of an offender is assessed by Western justice systems during trials, sentencing, parole hearings, and in restorative justice.

A person who is incapable of feeling remorse is often labeled a sociopath (US) or psychopath (UK) - formerly a DSM III condition. Some researchers have suggested that this lack is more characteristic of the INTJ personality, a highly rational temperament that relies very little on emotion, but the scientific worth and psychological accuracy of the Myers-Briggs Type Indicator test have been strongly questioned. In general, a person needs to be unable to feel fear, as well as remorse in order to develop psychopathic traits. Legal and business professions such as insurance have done research on the expression of remorse via apologies, primarily because of the potential litigation and financial implications.

Jungle

Jungle usually refers to a dense forest in a hot climate, such as a tropical rainforest. The word junglejangala which refers to uncultivated land,^[1] among other meanings. The term is prevalent in many languages of the Indian subcontinent and particularly Urdu and Hindi. It is generally used to refer to a dense tropical forest or a swamp with an abundance of animal and plant life. originates from the Sanskrit word

The term jungle may still be used in technical contexts to describe the rainforest biome, a forest characterised by extensive biodiversity and densely tangled undergrowth including the young trees, vines and lianas, and herbaceous plants

Love

The English word "love" can have a variety of related but distinct meanings in different contexts. Often, other languages use multiple words to express some of the different concepts that English relies mainly on "love" to encapsulate; one example is the plurality of Greek words for "love." Cultural differences in conceptualizing love thus make it doubly difficult to establish any universal definition.^[4]

Although the nature or essence of love is a subject of frequent debate, different aspects of the word can be clarified by determining what isn't love. As a general expression of positive sentiment (a stronger form of like), love is commonly contrasted with hate (or neutral apathy); as a less sexual and more emotionally intimate form of romantic attachment, love is commonly contrasted with lust; and as an interpersonal relationship with romantic overtones, love is commonly contrasted with friendship, although other definitions of the word love may be applied to close friendships in certain contexts.

When discussed in the abstract, love usually refers to interpersonal love, an experience felt by a person for another person. Love often involves caring for or identifying with a person or thing, including oneself (cf. narcissism).

In addition to cross-cultural differences in understanding love, ideas about love have also changed greatly over time. Some historians date modern conceptions of romantic love to courtly Europe during or after the Middle Ages, although the prior existence of romantic attachments is attested by ancient love poetry.^[5]

Two hands forming the outline of a heart shape.

Because of the complex and abstract nature of love, discourse on love is commonly reduced to a thought-terminating cliché, and there are a number of common proverbs regarding love, from Virgil's "Love conquers all" to the Beatles' "All you need is love." Bertrand Russell describes love as a condition of "absolute value," as opposed to relative value. Philosopher Gottfried Leibniz said that love is "to be delighted by the happiness of another."^[6]

Human brain

This article is about features specific to the human brain. For basic information about brains, see brain.

Neuroscience portal

Illustration of the human brain and skull

The human brain is the center of the human nervous system and is a highly complex organ. Enclosed in the cranium, it has the same general structure as the brains of other mammals, but is over three times as large as the brain of a mammal with an equivalent body size.^[1] Most of the expansion comes from the cerebral cortex, a convoluted layer of neural tissue that covers the surface of the forebrain. Especially expanded are the frontal lobes, which are involved in executive functions such as self-control, planning, reasoning, and abstract thought. The portion of the brain devoted to vision is also greatly enlarged in human beings.

Brain evolution, from the earliest shrewlike mammals through primates to hominids, is marked by a steady increase in encephalization, or the ratio of brain to body size. The human brain has been estimated to contain 50–100 billion (10¹¹) neurons^{[citation needed]}, of which about 10 billion (10¹⁰) are cortical pyramidal cells.^{[citation needed]} These cells pass signals to each other via approximately 100 trillion (10¹⁴)^{[citation needed]} synaptic connections.

In spite of the fact that it is protected by the thick bones of the skull, suspended in cerebrospinal fluid, and isolated from the bloodstream by the blood-brain barrier, the delicate nature of the human brain makes it susceptible to many types of damage and disease. The most common forms of physical damage are closed head injuries such as a blow to the head, a stroke, or poisoning by a wide variety of chemicals that can act as neurotoxins. Infection of the brain is rare because of the barriers that protect it, but is very serious when it occurs. More common are genetically based diseases^{[citation needed]}, such as Parkinson's disease, multiple sclerosis, and many others. A number of psychiatric conditions, such as schizophrenia and depression, are widely thought to be caused at least partially by brain dysfunctions, although the nature of such brain anomalies is not well understood.

The adult human brain weighs on average about 3 lb (1.5 kg)^[2] with a size of around 1130 cubic centimetres (cm³) in women and 1260 cm³ in men, although there is substantial individual variation.^[3] The brain is very soft, having a consistency similar to tofu. When alive, it is tan-gray on the outside and mostly yellow-white on the inside, with subtle variations in color. The photo on the right shows a horizontal slice of the head of an adult man, from the National Library of Medicine's Visible Human Project. In this project, two human cadavers (from a man and a woman) were frozen and then sliced into thin sections, which were individually photographed and digitized. The slice here is taken from a small distance below the top of the brain, and shows the cerebral cortex (the convoluted cellular layer on the outside) and the underlying white matter, which consists of myelinated fiber tracts traveling to and from the cerebral cortex. At the age of 20, a man has around 176,000 km and a woman, about 149,000 km of myelinated axons in their brains.^[4]

Drawing of the human brain, showing several important structures

Situated at the top and covered with a convoluted cortex, the cerebral hemispheres form the largest part of the human brain .^[5] Underneath the cerebrum lies the brainstem, resembling a stalk on which the cerebrum is attached. At the rear of the brain, beneath the cerebrum and behind the brainstem, is the cerebellum, a structure with a horizontally furrowed surface that makes it look different from any other brain area. The same structures are present in other mammals, although the cerebellum is not so large relative to the rest of brain. As a rule, the smaller the cerebrum, the less convoluted the cortex. The cortex of a rat or mouse is almost completely smooth. The cortex of a dolphin or whale, on the other hand, is more convoluted than the cortex of a human.

The dominant feature of the human brain is corticalization. The cerebral cortex in humans is so large that it overshadows every other part of the brain. A few subcortical structures show alterations reflecting this trend. The cerebellum, for example, has a medial zone connected mainly to subcortical motor areas, and a lateral zone connected primarily to the cortex. In humans the lateral zone takes up a much larger fraction of the cerebellum than in most other mammalian species. Corticalization is reflected in function as well as structure. In a rat, surgical removal of the entire cerebral cortex leaves an animal that is still capable of walking around and interacting with the environment.^[6] In a human, comparable cerebral cortex damage produces a permanent state of coma.

The four lobes of the cerebral cortex

The bones of the human skull

The cerebral cortex is nearly symmetric in outward form, with left and right hemispheres. Anatomists conventionally divide each hemisphere into four "lobes", the frontal lobe, parietal lobe, temporal lobe, and occipital lobe. It is important to realize that this categorization does not actually arise from the structure of the cortex itself: the lobes are named after the bones of the skull that overlie them. There is one exception: the border between the frontal and parietal lobes is shifted backward to the central sulcus, a deep fold that marks the line where the primary somatosensory cortex and primary motor cortex come together.

Major gyri and sulci on the lateral surface of the cortex

The cerebral cortex is essentially a sheet of neural tissue, folded in a way that allows a large surface area to fit within the confines of the skull. Each cerebral hemisphere, in fact, has a total surface area of about 1.3 square feet.^[7] Anatomists call each cortical fold a sulcus, and the smooth area between folds a gyrus. Most human brains show a similar pattern of folding, but there are enough variations in the shape and placement of folds to make every brain unique. Nevertheless, the pattern is consistent enough for each major fold to have a name, for example, the "superior frontal gyrus", "postcentral sulcus", or "trans-occipital sulcus".

Brodmann's classification of areas of the cortex

Different parts of the cerebral cortex are involved in different cognitive and behavioral functions. The differences show up in a number of ways: the effects of localized brain damage, regional activity patterns exposed when the brain is examined using functional imaging techniques, connectivity with subcortical areas, and regional differences in the cellular architecture of the cortex. Anatomists describe most of the cortex—the part they call isocortex—as having six layers, but not all layers are apparent in all areas, and even when a layer is present, its thickness and cellular organization may vary. Several anatomists have constructed maps of cortical areas on the basis of variations in the appearance of the layers as seen with a microscope. One of the most widely used schemes came from Brodmann, who split the cortex into 51 different areas and assigned each a number (anatomists have since subdivided many of the Brodmann areas^{[citation needed]}). For example, Brodmann area 1 is the primary somatosensory cortex, Brodmann area 17 is the primary visual cortex, and Brodmann area 25 is the anterior cingulate cortex.

[edit] Topography

Topography of the primary motor cortex, showing which body part is controlled by each zone

Many of the brain areas Brodmann defined have their own complex internal structures. In a number of cases, brain areas are organized into "topographic maps", where adjoining bits of the cortex correspond to adjoining parts of the body, or of some more abstract entity. A simple example of this type of correspondence is the primary motor cortex, a strip of tissue running along the anterior edge of the central sulcus, shown in the image to the right. Motor areas innervating each part of the body arise from a distinct zone, with neighboring body parts represented by neighboring zones. Electrical stimulation of the cortex at any point causes a muscle-contraction in the represented body part. This "somatotopic" representation is not evenly distributed, however. The head, for example, is represented by a region about three times as large as the zone for the entire back and trunk. The size of a zone correlates to the precision of motor control and sensory discrimination possible^{[citation needed]}. The areas for the lips, fingers, and tongue are particularly large, considering the proportional size of their represented body parts.

In visual areas, the maps are retinotopic—that is, they reflect the topography of the retina, the layer of light-activated neurons lining the back of the eye. In this case too the representation is uneven: the fovea—the area at the center of the visual field—is greatly overrepresented compared to the periphery. The visual circuitry in the human cerebral cortex contains several dozen distinct retinotopic maps, each devoted to analyzing the visual input stream in a particular way^{[citation needed]}. The primary visual cortex (Brodmann area 17), which is the main recipient of direct input from the visual part of the thalamus, contains many neurons that are most easily activated by edges with a particular orientation moving across a particular point in the visual field. Visual areas farther downstream extract features such as color, motion, and shape.

In auditory areas, the primary map is tonotopic. Sounds are parsed according to frequency (i.e., high pitch vs. low pitch) by subcortical auditory areas, and this parsing is reflected by the primary auditory zone of the cortex. As with the visual system, there are a number of tonotopic cortical maps, each devoted to analyzing sound in a particular way.

Within a topographic map there can sometimes be finer levels of spatial structure. In the primary visual cortex, for example, where the main organization is retinotopic and the main responses are to moving edges, cells that respond to different edge-orientations are spatially segregated from one another^{[citation needed]}.

[edit] Lateralization

Main article: Lateralization of brain function

Routing of neural signals from the two eyes to the brain

Each hemisphere of the brain interacts primarily with one half of the body, but for reasons that are unclear, the connections are crossed: the left side of the brain interacts with the right side of the body, and vice versa. Motor connections from the brain to the spinal cord, and sensory connections from the spinal cord to the brain, both cross the midline at brainstem levels. Visual input follows a more complex rule: the optic nerves from the two eyes come together at a point called the optic chiasm, and half of the fibers from each nerve split off to join the other. The result is that connections from the left half of the retina, in both eyes, go to the left side of the brain, whereas connections from the right half of the retina go to the right side of the brain. Because each half of the retina receives light coming from the opposite half of the visual field, the functional consequence is that visual input from the left side of the world goes to the right side of the brain, and vice versa. Thus, the right side of the brain receives somatosensory input from the left side of the body, and visual input from the left side of the visual field—an arrangement that presumably is helpful for visuomotor coordination.

The corpus callosum, a nerve bundle connecting the two cerebral hemispheres, with the lateral ventricles directly below

The two cerebral hemispheres are connected by a very large nerve bundle called the corpus callosum, which crosses the midline above the level of the thalamus. There are also two much smaller connections, the anterior commisure and hippocampal commisure, as well as many subcortical connections that cross the midline. The corpus callosum is the main avenue of communication between the two hemispheres, though. It connects each point on the cortex to the mirror-image point in the opposite hemisphere, and also connects to functionally related points in different cortical areas.

In most respects, the left and right sides of the brain are symmetrical in terms of function. For example, the counterpart of the left-hemisphere motor area controlling the right hand is the right-hemisphere area controlling the left hand. There are, however, several very important exceptions, involving language and spatial cognition. In most people, the left hemisphere is "dominant" for language: a stroke that damages a key language area in the left hemisphere can leave the victim unable to speak or understand, whereas equivalent damage to the right hemisphere would cause only minor impairment to language skills.

A substantial part of our current understanding of the interactions between the two hemispheres has come from the study of "split-brain patients"—people who underwent surgical transection of the corpus callosum in an attempt to reduce the severity of epileptic seizures. These patients do not show unusual behavior that is immediately obvious, but in some cases can behave almost like two different people in the same body, with the right hand taking an action and then the left hand undoing it. Most such patients, when briefly shown a picture on the right side of the point of visual fixation, are able to describe it verbally, but when the picture is shown on the left, are unable to describe it, but may be able to give an indication with the left hand of the nature of the object shown.

It should be noted that the differences between left and right hemispheres are greatly overblown in much of the popular literature on this topic. The existence of differences has been solidly established, but many popular books go far beyond the evidence in attributing features of personality or intelligence to the left or right hemisphere dominance

Wisdom

Wisdom is knowledge of what is true or right coupled with just judgment as to action; sagacity, discernment, or insight^[1] It is an ideal that has been celebrated since antiquity as the application of knowledge needed to live a good life^{[citation needed]}. Beyond simply knowing/understanding what options are available, "Wisdom" provides the ability to differentiate between them and choose the one that is best. What this means exactly depends on the various wisdom schools and traditions claiming to help foster it. In general, these schools have emphasized various combinations of the following: knowledge, understanding, experience, discipline, discretion, and intuitive understanding, along with a capacity to apply these qualities well towards finding solutions to problems. In many traditions, the terms wisdom and intelligence have somewhat overlapping meanings; in others they are arranged hierarchically, with intelligence being necessary but not sufficient for wisdom.

Neo-Platonists like Cusanus, endorsed a 'docta ignorantia' in which the greatest wisdom was to recognize one's own ignorance of the divine^{[citation needed]}.

According to Rice (1958) two wisdom traditions can be identified in the Renaissance: Contemplative and prudential. Contemplative traditions, such as monastic traditions, emphasized meditation on one's own experience as a pathway to the divine: Augustine of Hippo was an early and influential figure in the Christian lineage of this tradition. The status of wisdom or prudence as a virtue is recognized in cultural, philosophical and religious sources as the judicious and purposeful application of knowledge that is valued in society. Charron (1601) was an influential Renaissance proponent of this wisdom tradition.

Civilization

Civilization" is often used as a synonym for the broader term "culture" in both popular and academic circles.^[1] Every human being participates in a culture, defined as "the arts, customs, habits... beliefs, values, behavior and material habits that constitute a people's way of life".^[2] However, in its most widely used definition, civilization is a descriptive term for a relatively complex agricultural and urban culture. Civilizations can be distinguished from other cultures by their high level of social complexity and organization, and by their diverse economic and cultural activities.

In an older but still frequently used sense, the term "civilization" can be used in a normative manner as well: in societal contexts where complex and urban cultures are assumed to be superior to other "savage" or "barbarian" cultures, the concept of "civilization" is used as a synonym for "cultural (and often ethical) superiority of certain groups." In a similar sense, civilization can mean "refinement of thought, manners, or taste".^[3]

In his book The Philosophy of Civilization, Albert Schweitzer, one of the main philosophers on the concept of civilization, outlined the idea that there are dual opinions within society; one regarding civilization as purely material and another regarding civilization as both ethical and material. He stated that the current world crisis was, then in 1923, due to a humanity having lost the ethical conception of civilization. In this same work, he defined civilization, saying:

It is the sum total of all progress made by man in every sphere of action and from every point of view in so far as the progress helps towards the spiritual perfecting of individuals as the progress of all progress.

Huntington's map of world civilizations(1996).

In the sixth century, the Roman Emperor Justinian oversaw the consolidation of Roman civil law. The resulting collection is called the Corpus Juris Civilis. In the 11th century, professors at the University of Bologna, Western Europe's first university, rediscovered Corpus Juris Civilis, and its influence began to be felt across Western Europe. In 1388, the word civil appeared in English meaning "of or related to citizens".^[4] In 1704, civilization began to mean "a law which makes a criminal process into a civil case." Civilization was not used in its modern sense to mean "the opposite of barbarism" — as contrasted to civility, meaning politeness or civil virtue — until the 18th century.

According to Emile Benveniste (1954^[5]), the earlist written occurrence in English of civilization in its modern sense may be found in Adam Ferguson's An Essay on the History of Civil Society (Edinburgh, 1767 - p. 2):

Not only the individual advances from infancy to manhood, but the species itself from rudeness to civilization.

It should be noted that this usage incorporates the concept of superiority and maturity of "civilized" existence, as contrasted to "rudeness", which is used to denote coarseness, as in a lack of refinement or "civility".

Before Benveniste's inquiries, the New English Dictionary quoted James Boswell's conversation with Samuel Johnson concerning the inclusion of Civilization in Johnson's dictionary:

On Monday, March 23 (1772), I found him busy, preparing a fourth edition of his folio Dictionary... He would not admit civilization, but only civility. With great deference to him I thought civilization, from to civilize, better in the sense opposed to barbarity than civility, as it is better to have a distinct word for each sense, than one word with two senses, which civility is, in his way of using it.

Benveniste demonstrated that previous occurrences could be found, which explained the quick adoption of Johnson's definition. In 1775 the dictionary of Ast defined civilization as "the state of being civilized; the act of civilizing"^[5], and the term was frequently used by Adam Smith in An Inquiry into the Nature and Causes of the Wealth of Nations (1776)^[5]. Beside Smith and Ferguson, John Millar also used it in 1771 in his Observations concerning the distinction of ranks in society^[5].

As the first occurrence of civilization in French was found by Benveniste in the Marquis de Mirabeau's L'Ami des hommes ou traité de la population (written in 1756 but published in 1757), Benveniste's query was to know if the English word derived from the French, or if both evolved independently — a question which needed more research. According to him, the word civilization^[5]. may in fact have been used by Ferguson as soon as 1759

Furthermore, Benveniste notes that, contrasted to civility, a static term, civilization conveys a sense of dynamism. He thus writes that

[i]t was not only a historical view of society; it was also an optimist and resolutely non theological interpretation of its evolution which asserted itself, sometimes at the insu of those who proclaimed it, and even if some of them, and first of all Mirabeau, still counted religion as the first factor of 'civilization.^[5][6]

Another source of the word may relate to chivalry: a set of rules of engagement, originally for knights in warfare, but later expanded to cover conduct of knighthood or nobility. The English 'chivalry' comes from the French 'chevalier': a horseman. England and France would therefore have given rise to the terms at similar times.

Easy about Hijab

You look at me and call me oppressed,
Simply because of the way I'm dressed,
You know me not for what's inside,
You judge the clothing I wear with pride,
My body's not for your eyes to hold,
You must speak to my mind, not my feminine mold,
I'm an individual, I'm no mans slave,
It's Allah's pleasure that I only crave,
I have a voice so I will be heard,
For in my heart I carry His word,
" O ye women, wrap close your cloak,
So you won't be bothered by ignorant folk",
Man doesn't tell me to dress this way,
It's a Law from God that I obey,
Oppressed is something I'm truly NOT,
For liberation is what I've got,
It was given to me many years ago,
With the right to prosper, the right to grow,
I can climb mountains or cross the seas,
Expand my mind in all degrees,
For God Himself gave us LIB-ER-TY,
When He sent Islam,
To You and Me

The Five Pillars of Islam

FAITH

" There is no god worhy of worship except God and Muhammad is His messenger ".


PRAYER PERFORMANCE
Salat is the name for the obligatory prayers
which are performed five times a day , and are a direct
link between the worshiper and God.


GIVING THE " ZAKAT "
One of the most important principles of Islam is that all things belong to God , and that wealth is therefore held by human beings in trust .


THE FASTING OF RAMADAN

Every year in the month of Ramadan , all Muslims fast from first light until sundown , abstaining from food , drink , and sexual relations .

THE PILGRIMAGE HAJJ

The annual pilgrimage to Makkah - the Hajj - is an obligation only for those who are physically and financially able to perform it .

Star

This article is about the astronomical object. For other uses, see Star (disambiguation).

The Pleiades, an open cluster of stars in the constellation of Taurus. NASA photo

A star is a massive, luminous ball of plasma that is held together by gravity. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth. Other stars are visible in the night sky, when they are not outshone by the Sun. Historically, the most prominent stars on the celestial sphere were grouped together into constellations, and the brightest stars gained proper names. Extensive catalogues of stars have been assembled by astronomers, which provide standardized star designations.

For most of its life, a star shines due to thermonuclear fusion in its core releasing energy that traverses the star's interior and then radiates into outer space. Almost all elements heavier than hydrogen and helium were created by fusion processes in stars. Astronomers can determine the mass, age, chemical composition and many other properties of a star by observing its spectrum, luminosity and motion through space. The total mass of a star is the principal determinant in its evolution and eventual fate. Other characteristics of a star are determined by its evolutionary history, including the diameter, rotation, movement and temperature. A plot of the temperature of many stars against their luminosities, known as a Hertzsprung-Russell diagram (H–R diagram), allows the age and evolutionary state of a star to be determined.

A star begins as a collapsing cloud of material composed primarily of hydrogen, along with helium and trace amounts of heavier elements. Once the stellar core is sufficiently dense, some of the hydrogen is steadily converted into helium through the process of nuclear fusion.^[1] The remainder of the star's interior carries energy away from the core through a combination of radiative and convective processes. The star's internal pressure prevents it from collapsing further under its own gravity. Once the hydrogen fuel at the core is exhausted, those stars having at least 0.4 times the mass of the Sun^[2] expand to become a red giant, in some cases fusing heavier elements at the core or in shells around the core. The star then evolves into a degenerate form, recycling a portion of the matter into the interstellar environment, where it will form a new generation of stars with a higher proportion of heavy elements.^[3]

Binary and multi-star systems consist of two or more stars that are gravitationally bound, and generally move around each other in stable orbits. When two such stars have a relatively close orbit, their gravitational interaction can have a significant impact on their evolution.^[4] Stars can form part of a much larger gravitationally bound structure, such as a cluster or a galaxy.

Mineral definition and classification

To be classified as a true mineral, a substance must be a solid and have a crystalline structure. It must also be a naturally occurring, homogeneous substance with a defined chemical composition. Traditional definitions excluded organically derived material. However, the International Mineralogical Association in 1995 adopted a new definition:

a mineral is an element or chemical compound that is normally crystalline and that has been formed as a result of geological processes.

^[2] The modern classifications include an organic class – in both the new Dana and the Strunz classification schemes.^[3][4]

The chemical composition may vary between end members of a mineral system. For example the plagioclase feldspars comprise a continuous series from sodium and silicon-rich albite (NaAlSi₃O₈) to calcium and aluminium-rich anorthite (CaAl₂Si₂O₈) with four recognized intermediate compositions between. Mineral-like substances that don't strictly meet the definition are sometimes classified as mineraloids. Other natural-occurring substances are nonminerals. Industrial minerals is a market term and refers to commercially valuable mined materials (see also Minerals and Rocks section below).

A crystal structure is the orderly geometric spatial arrangement of atoms in the internal structure of a mineral. There are 14 basic crystal lattice arrangements of atoms in three dimensions, and these are referred to as the 14 "Bravais lattices". Each of these lattices can be classified into one of the seven crystal systems, and all crystal structures currently recognized fit in one Bravais lattice and one crystal system. This crystal structure is based on regular internal atomic or ionic arrangement that is often expressed in the geometric form that the crystal takes. Even when the mineral grains are too small to see or are irregularly shaped, the underlying crystal structure is always periodic and can be determined by X-ray diffraction. Chemistry and crystal structure together define a mineral. In fact, two or more minerals may have the same chemical composition, but differ in crystal structure (these are known as polymorphs). For example, pyrite and marcasite are both iron sulfide, but their arrangement of atoms differs. Similarly, some minerals have different chemical compositions, but the same crystal structure: for example, halite (made from sodium and chlorine), galena (made from lead and sulfur) and periclase (made from magnesium and oxygen) all share the same cubic crystal structure.

Crystal structure greatly influences a mineral's physical properties. For example, though diamond and graphite have the same composition (both are pure carbon), graphite is very soft, while diamond is the hardest of all known minerals. This happens because the carbon atoms in graphite are arranged into sheets which can slide easily past each other, while the carbon atoms in diamond form a strong, interlocking three-dimensional network.

There are currently more than 4,000 known minerals, according to the International Mineralogical Association, which is responsible for the approval of and naming of new mineral species found in nature. Of these, perhaps 100 can be called "common", 50 are "occasional", and the rest are "rare" to "extremely rare".

[edit] Differences between minerals and rocks

A mineral is a naturally occurring solid with a definite chemical composition and a specific crystalline structure. A rock is an aggregate of one or more minerals. (A rock may also include organic remains and mineraloids.) Some rocks are predominantly composed of just one mineral. For example, limestone is a sedimentary rock composed almost entirely of the mineral calcite. Other rocks contain many minerals, and the specific minerals in a rock can vary widely. Some minerals, like quartz, mica or feldspar are common, while others have been found in only four or five locations worldwide. The vast majority of the rocks of the Earth's crust consist of quartz, feldspar, mica, chlorite, kaolin, calcite, epidote, olivine, augite, hornblende, magnetite, hematite, limonite and a few other minerals.^[5] Over half of the mineral species known are so rare that they have only been found in a handful of samples, and many are known from only one or two small grains.

Commercially valuable 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).

[edit] Mineral composition of rocks

A main determining factor in the formation of minerals in a rock mass is the chemical composition of the mass, for a certain mineral can be formed only when the necessary elements are present in the rock. Calcite is most common in limestones, as these consist essentially of calcium carbonate; quartz is common in sandstones and in certain igneous rocks which contain a high percentage of silica.

Other factors are of equal importance in determining the natural association or paragenesis of rock-forming minerals, principally the mode of origin of the rock and the stages through which it has passed in attaining its present condition. Two rock masses may have very much the same bulk composition and yet consist of entirely different assemblages of minerals. The tendency is always for those compounds to be formed which are stable under the conditions under which the rock mass originated. A granite arises by the consolidation of a molten magma at high temperatures and great pressures and its component minerals are those stable under such conditions. Exposed to moisture, carbonic acid and other subaerial agents at the ordinary temperatures of the Earth's surface, some of these original minerals, such as quartz and white mica are relatively stable and remain unaffected; others weather or decay and are replaced by new combinations. The feldspar passes into kaolinite, muscovite and quartz, and any mafic minerals such as pyroxenes, amphiboles or biotite have been present they are often altered to chlorite, epidote, rutile and other substances. These changes are accompanied by disintegration, and the rock falls into a loose, incoherent, earthy mass which may be regarded as a sand or soil. The materials thus formed may be washed away and deposited as sandstone or siltstone. The structure of the original rock is now replaced by a new one; the mineralogical constitution is profoundly altered; but the bulk chemical composition may not be very different. The sedimentary rock may again undergo metamorphism. If penetrated by igneous rocks it may be recrystallized or, if subjected to enormous pressures with heat and movement during mountain building, it may be converted into a gneiss not very different in mineralogical composition though radically different in structure to the granite which was its original state.^[5]

Gold

Gold is the most malleable and ductile of all metals; a single gram can be beaten into a sheet of 1 square meter, or an ounce into 300 square feet. Gold leaf can be beaten thin enough to become translucent. The transmitted light appears greenish blue, because gold strongly reflects yellow and red.^[2] Such semi-transparent sheets also strongly reflect infra-red, making them useful as infrared (radiant heat) shields in visors of heat-resistant suits, and in sun-visors for spacesuits.^[3]

Gold readily creates alloys with many other metals. These alloys can be produced to modify the hardness and other metallurgical properties, to control melting point or to create exotic colors (see below). Gold is a good conductor of heat and electricity and reflects infra red radiation strongly. Chemically, it is unaffected by air, moisture and most corrosive reagents, and is therefore well-suited for use in coins and jewelry and as a protective coating on other, more reactive, metals. However, it is not chemically inert. Free halogens will react with gold, and aqua regia dissolves it via formation of chlorine gas which attacks gold to form the chloraurate ion. Gold also dissolves in alkaline solutions of potassium cyanide and in mercury, forming a gold-mercury amalgam.

Common oxidation states of gold include +1 (gold(I) or aurous compounds) and +3 (gold(III) or auric compounds). Gold ions in solution are readily reduced and precipitated out as gold metal by adding any other metal as the reducing agent. The added metal is oxidized and dissolves allowing the gold to be displaced from solution and be recovered as a solid precipitate.

High quality pure metallic gold is tasteless; in keeping with its resistance to corrosion (it is metal ions which confer taste to metals).

In addition, gold is very dense, a cubic meter weighing 19300 kg. By comparison, the density of lead is 11340 kg/m³, and that of the densest element, osmium, is 22610 kg/m³.

Isotopes

Main article: Isotopes of gold

Gold has only one stable isotope, ¹⁹⁷Au, which is also its only naturally-occurring isotope. 36 radioisotopes have been synthesized ranging in atomic mass from 169 to 205. The most stable of these is ¹⁹⁵Au with a half-life of 186.1 days. ¹⁹⁵Au is also the only gold isotope to decay by electron capture. The least stable is ¹⁷¹Au, which decays by proton emission with a half-life of 30 µs. Most of gold's radioisotopes with atomic masses below 197 decay by some combination of proton emission, α decay, and β+ decay. The exceptions are ¹⁹⁵Au, which decays by electron capture, and ¹⁹⁶Au, which has a minor β- decay path. All of gold's radioisotopes with atomic masses above 197 decay by β- decay.^[4]

At least 32 nuclear isomers have also been characterized, ranging in atomic mass from 170 to 200. Within that range, only ¹⁷⁸Au, ¹⁸⁰Au, ¹⁸¹Au, ¹⁸²Au, and ¹⁸⁸Au do not have isomers. Gold's most stable isomer is ^{198 m2}Au with a half-life of 2.27 days. Gold's least stable isomer is ^{177 m2}Au with a half-life of only 7 ns. ^{184 m1}Au has three decay paths: β+ decay, isomeric transition, and alpha decay. No other isomer or isotope of gold has three decay paths.^[4]

Color of gold

Different colors of Ag-Au-Cu alloys

The color of pure gold is metallic yellow. Gold, caesium and copper are the only metallic elements with a natural color other than gray or white. The usual gray color of metals depends on their "electron sea" that is capable of absorbing and re-emitting photons over a wide range of frequencies. Gold reacts differently, depending on subtle relativistic effects that affect the orbitals around gold atoms.^[5][6]

Common colored gold alloys such as rose gold can be created by the addition of various amounts of copper and silver, as indicated in the triangular diagram on the right. Alloys containing palladium or nickel are also important in commercial jewelry as these produce white gold alloys. Less commonly, addition of manganese, aluminium, iron, indium and other elements can produce more unusual colors of gold for various applications.^[7]

Applications

As the metal

Medium of monetary exchange

Main article: Gold standard

Special issue Canadian Gold Maple Leaf coin with the highest purity of any gold coin at a guaranteed 99.999%

Throughout the world gold was widely used as a standard for monetary exchange, but has been abandoned by world governments which have issued fiat currency in its stead. The amount of gold in the world is finite, but there is no limit to the quantity of paper currency which can be issued. At the beginning of World War I the warring nations moved to a fractional gold standard, inflating their currencies to finance the war effort. After World War II gold was replaced by a system of convertible currency following the Bretton Woods system. The last country to tie their currency to gold was Switzerland, which backed 40% of its value until the Swiss joined the International Monetary Fund in 1999.^[8]

Pure gold is too soft for day to day monetary use and was typically hardened by alloying with copper, silver or other base metals prior to the advent of paper money. The gold content of gold alloys is measured in carats (k), pure gold being designated as 24k. Many holders of gold in storage (as bullion coin or bullion) hold it as a hedge against inflation or other economic disruptions. (The ISO currency code of gold bullion is XAU).

Gold coins intended for circulation from 1526 into the 1930s were typically a standard 22k alloy called crown gold, for hardness. Modern collector/investment bullion coins (which do not require good mechanical wear properties) are typically 24k, although the American Gold Eagle, the British gold sovereign and the South African Krugerrand continue to be made at 22k, on historical tradition. The special issue Canadian Gold Maple Leaf coin contains the highest purity gold of any bullion coin, at 99.999% (.99999 fine). The popular issue Canadian Gold Maple Leaf coin has a purity of 99.99%. Several other 99.99% pure gold coins are currently available, including Australia's Gold Kangaroos (first appearing in 1986 as the Australian Gold Nugget, with the kangaroo theme appearing in 1989), the several coins of the Australian Lunar Calendar series, and the Austrian Philharmonic. In 2006, the U.S. Mint began production of the American Buffalo gold bullion coin also at 99.99% purity.

Jewelry

Moche gold necklace depicting feline heads. Larco Museum Collection. Lima-Peru

Because of the softness of pure (24k) gold, it is usually alloyed with base metals for use in jewelry, altering its hardness and ductility, melting point, color and other properties. Alloys with lower caratage, typically 22k, 18k, 14k or 10k, contain higher percentages of copper, or other base metals or silver or palladium in the alloy. Copper is the most commonly used base metal, yielding a redder color. Eighteen carat gold containing 25% copper is found in antique and Russian jewelry and has a distinct, though not dominant, copper cast, creating rose gold. Fourteen carat gold-copper alloy is nearly identical in color to certain bronze alloys, and both may be used to produce police, as well as other, badges. Blue gold can be made by alloying with iron and purple gold can be made by alloying with aluminium, although rarely done except in specialized jewelry. Blue gold is more brittle and therefore more difficult to work with when making jewelry. Fourteen and eighteen carat gold alloys with silver alone appear greenish-yellow and are referred to as green gold. White gold alloys can be made with palladium or nickel. White 18 carat gold containing 17.3% nickel, 5.5% zinc and 2.2% copper is silver in appearance. Nickel is toxic, however, and its release from nickel white gold is controlled by legislation in Europe. Alternative white gold alloys are available based on palladium, silver and other white metals (World Gold Council), but the palladium alloys are more expensive than those using nickel. High-carat white gold alloys are far more resistant to corrosion than are either pure silver or sterling silver. The Japanese craft of Mokume-gane exploits the color contrasts between laminated colored gold alloys to produce decorative wood-grain effects.