Silver |
Silver is a chemical element with the symbol Ag (from the traditional abbreviation for the Latin argentum). A soft white lustrous transition metal, it has the highest electrical and thermal conductivity of any metal and occurs in minerals and in free form. This metal is used in coins, jewelry, tableware, and photography.
Silver is a very ductile and malleable (slightly harder than gold) univalent coinage metal with a brilliant white metallic luster that can take a high degree of polish. It has the highest electrical conductivity of all metals, even higher than copper, but its greater cost and tarnishability has prevented it from being widely used in place of copper for electrical purposes.
Pure silver also has the highest thermal conductivity, whitest colour, the highest optical reflectivity (although it is a poor reflector of ultraviolet light), and the lowest contact resistance of any metal. Silver halides are photosensitive and are remarkable for the effect of light upon them. This metal is stable in pure air and water, but does tarnish when it is exposed to ozone, hydrogen sulfide, or air with sulfur in it. The most common oxidation state of silver is +1; a few +2 compounds are known as well.
The principal use of silver is as a precious metal. Its salts, especially silver nitrate and silver halides, are also widely used in photography (which is the largest single end use of silver). Some other uses for silver are as follows:
Silver (from Anglo-Saxon seolfor, compare Old High German silabar; Ag is from the Latin argentum) has been known since ancient times. It is mentioned in the book of Genesis, and slag heaps found in Asia Minor and on the islands of the Aegean Sea indicate that silver was being separated from lead as early as the 4th millennium BC.
Silver has been used for thousands of years for ornaments and utensils, for trade, and as the basis for many monetary systems. Its value as a precious metal was long considered second only to gold. In Ancient Egypt and Medieval Europe, it was often more valuable than gold.
Associated with the moon, as well as with the sea and various lunar goddesses, the metal was referred to by alchemists by the name luna.
One of the alchemical symbols for silver is a crescent moon with the open part on the left (see picture, right).
The metal mercury was thought of as a kind of silver, though the two elements are chemically unrelated; its Latin and English names, hydrargyrum ("watery silver") and quicksilver, respectively, reflect this history.
In heraldry, the argent, in addition to being shown as silver (this has been shown at times with real silver in official representations), can also been shown as white. Occasionally, the word "silver" is used rather than argent; sometimes this is done across-the-board, sometimes to avoid repetition of the word "argent" in blazon.
Europeans found a huge amount of silver in the New World in Zacatecas and Potosí, which triggered a period of inflation in Europe. The conquistador Pizarro was said to have resorted to having his horses shod with silver horseshoes due to the metal's abundance, in contrast to the relative lack of iron in Peru. Silver, which was extremely valuable in China, became a global commodity, contributing to the rise of the Spanish Empire. The rise and fall of its value affected the world market.
The Rio de la Plata was named after silver (in Spanish, plata), and in turn lent the meaning of its name to Argentina.
Silver mining was a driving force in the settlement of western North America, with major booms for silver and associated minerals (lead, mostly) in the galena ore silver is most commonly found in. Notable "silver rushes" were in Colorado, Nevada, Cobalt, Ontario , California and the Kootenay region of British Columbia, notably in the Boundary and "Silvery Slocan". The largest silver ore deposits in the United States were discovered at the Comstock Lode in Virginia City, Nevada, in 1859.
Silver is found in native form, combined with sulfur, arsenic, antimony, or chlorine and in various ores such as argentite (Ag2S) and horn silver (AgCl). The principal sources of silver are copper, copper-nickel, gold, lead and lead-zinc ores obtained from Canada, Cobalt, Ontario , Mexico, Peru, Australia and the United States.
This metal is also produced during the electrolytic refining of copper. Commercial grade fine silver is at least 99.9% pure silver and purities greater than 99.999% are available. Mexico is the largest silver producer. According to the Secretary of Economics of Mexico, it produced 80,120,000 troy ounces (2492 metric tons) in 2000, about 15% of the annual production of the world.
Main articles: Silver as an investment and Silver standard
Because the majority of the world's silver deposits are concentrated in the Americas, silver was far more valuable before the Age of Discovery; on average, about 1/6th or 1/7th the price of gold. However, now silver is relatively cheap compared to other precious metals, with a mass of silver worth only about 1/60th the same mass of gold. In turn, copper is about 1/70th as valuable as silver.
Over the last 100 years the price of silver and the gold/silver ratio has fluctuated greatly due to competing industrial and store of value demands. In 1980 the silver price rose to an all-time high of $49.45 per troy ounce. In December 2001 the silver price was $4.15 per ounce, and in February 2006 it had risen to $9.50 per ounce [1].
Naturally occurring silver is composed of the two stable isotopes Ag-107 and Ag-109 with Ag-107 being the more abundant (51.839% natural abundance). Twenty-eight radioisotopes have been characterised with the most stable being Ag-105 with a half-life of 41.29 days, Ag-111 with a half-life of 7.45 days, and Ag-112 with a half-life of 3.13 hours.
All of the remaining radioactive isotopes have half-lifes that are less than an hour and the majority of these have half lifes that are less than 3 minutes. This element also has numerous meta states with the most stable being Ag-128m (t* 418 years), Ag-110m (t* 249.79 days) and Ag-107m (t* 8.28 days).
Isotopes of silver range in atomic weight from 93.943 u (Ag-94) to 123.929 u (Ag-124). The primary decay mode before the most abundant stable isotope, Ag-107, is electron capture and the primary mode after is beta decay. The primary decay products before Ag-107 are palladium (element 46) isotopes and the primary products after are cadmium (element 48) isotopes.
The palladium isotope Pd-107 decays by beta emission to Ag-107 with a half-life of 6.5 million years. Iron meteorites are the only objects with a high enough Pd/Ag ratio to yield measurable variations in Ag-107 abundance. Radiogenic Ag-107 was first discovered in the Santa Clara meteorite in 1978. The discoverers suggest that the coalescence and differentiation of iron-cored small planets may have occurred 10 million years after a nucleosynthetic event. Pd-107 versus Ag correlations observed in bodies, which have clearly been melted since the accretion of the solar system, must reflect the presence of live short-lived nuclides in the early solar system.
Silver plays no known natural biological role in humans, and possible health effects of silver are a subject of dispute. Silver itself is not toxic but most of its salts are, and some may be carcinogenic.
Hippocrates, the father of modern medicine, wrote that silver had beneficial healing and anti-disease properties, and the Phoenicians used to store water, wine, and vinegar in silver bottles to prevent spoiling. In the early 1900's people would put silver dollars in milk bottles to prolong the milk's freshness. Silver compounds were used successfully to prevent infection in World War I before the advent of antibiotics, and Silver compounds are still widely used externally today to accelerate healing in burn victims.
Silver and compounds containing silver (like colloidal silver) can be absorbed into the circulatory system and become deposited in various body tissues leading to a condition called argyria which results in a blue-grayish pigmentation of the skin, eyes, and mucous membranes. Although this condition does not harm a person's health, it is disfiguring and usually permanent. Argyria is rare and mild forms are sometimes mistaken for cyanosis.
Silver-ions and silver compounds show a toxic effect on some bacteria, viruses, algae and fungi typical for heavy metals like lead or mercury, but without the high toxicity to humans that is normally associated with them. It's germicidal effects kills many microbial organisms in vitro (i.e. in a test tube or a petri dish). The exact process by which this is done is still not well understood, although several different theories exist. One of these is a process generally known for heavy metals called the oligodynamic effect, which goes a long way explaining the effect on microbial lifeforms but does not explain certain antiviral functions.
Today, various kinds of silver compounds, or devices to make solutions or colloids containing silver, are sold as remedies for a wide variety of diseases. Although mostly harmless, some people using these home-made solutions use far too much and develop argyria over a period of months or years, and several have been documented in the last few years in the medical literature, including one possible case of coma associated with a high intake of silver (see medical references). It is strongly advised to notify a doctor when taking silver as a form of self-medication.
The widespread use of silver went out of fashion with the invention of antibiotics.
In India, foods can be found decorated with a thin layer of silver, known as Varak.
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In India, foods can be found decorated with a thin layer of silver, known as Varak. Contrary to the Marxist perspective, the anarchists see the state as an unnecessary evil, rather than a tool to be used in the class struggle. The widespread use of silver went out of fashion with the invention of antibiotics. They believe that if the state and its restrictions on individual freedom were abolished, people could figure out how to work together peacefully and individual creativity would be unleashed. It is strongly advised to notify a doctor when taking silver as a form of self-medication. Totally rejecting the Hobbesian notion that only a state can prevent chaos, anarchists argue that the state's monopoly on violence creates chaos. Although mostly harmless, some people using these home-made solutions use far too much and develop argyria over a period of months or years, and several have been documented in the last few years in the medical literature, including one possible case of coma associated with a high intake of silver (see medical references). Finally, in anarchist thinking, the state is nothing but an unnecessary and exploitative segment of society. Today, various kinds of silver compounds, or devices to make solutions or colloids containing silver, are sold as remedies for a wide variety of diseases. Many conservatives, especially in recent decades, have come out in favor of the liberal theory of natural rights. One of these is a process generally known for heavy metals called the oligodynamic effect, which goes a long way explaining the effect on microbial lifeforms but does not explain certain antiviral functions. Further, as with the liberals, the state is seen as always existing and/or "natural". The exact process by which this is done is still not well understood, although several different theories exist. This perspective posits that, in general, current traditions only exist because they have been demonstrably successful in the past. in a test tube or a petri dish). Thus, in a way, conservatives accept some ideas from both the Marxist and the liberal schools of thought, but view them in a different light: the state forces people to accept class and other kinds of domination, but this is seen as being for their own good. It's germicidal effects kills many microbial organisms in vitro (i.e. In conservative thinking, which is based on the theory of (super)natural authority, the existing structure of traditions and hierarchies (of class, patriarchy, ethnic dominance, etc.) is seen as benefiting society overall. Silver-ions and silver compounds show a toxic effect on some bacteria, viruses, algae and fungi typical for heavy metals like lead or mercury, but without the high toxicity to humans that is normally associated with them. Once the process is complete, the communist social order has been achieved and the state no longer exists as an entity separate from the people. Argyria is rare and mild forms are sometimes mistaken for cyanosis. This state ought subsequently to slowly "wither away" as the representative democracy of socialism gradually transforms into the direct democracy of communism. Although this condition does not harm a person's health, it is disfiguring and usually permanent. As such, there is some overlap between Marxism and contractarianism: the socialist state that Marxists wish to establish as their short-term goal is to be based on a form of social contract. Silver and compounds containing silver (like colloidal silver) can be absorbed into the circulatory system and become deposited in various body tissues leading to a condition called argyria which results in a blue-grayish pigmentation of the skin, eyes, and mucous membranes. Thus, Marxism is opposed to the state (which it views as illegitimate, in accordance with the conflict theory), but does not wish to abolish the state immediately. Silver compounds were used successfully to prevent infection in World War I before the advent of antibiotics, and Silver compounds are still widely used externally today to accelerate healing in burn victims. Communism, the final goal, is a classless, propertyless and stateless society; however, socialism still preserves personal property and a (democratic) state. In the early 1900's people would put silver dollars in milk bottles to prolong the milk's freshness. Further, in Marxist theory, classes and other forms of exploitation should be abolished by establishing a socialist system, to be followed later by a communist one. Hippocrates, the father of modern medicine, wrote that silver had beneficial healing and anti-disease properties, and the Phoenicians used to store water, wine, and vinegar in silver bottles to prevent spoiling. In modern Marxian theory, such class domination can coincide with other forms of domination (such as patriarchy and ethnic hierarchies). Silver itself is not toxic but most of its salts are, and some may be carcinogenic. Under capitalism, on the other hand, the use of force is centralized in a specialized organization which protects the capitalists' class monopoly of ownership of the means of production, allowing the exploitation of those without such ownership. Silver plays no known natural biological role in humans, and possible health effects of silver are a subject of dispute. Under such systems as feudalism, the lords used their own military force to exploit their vassals. Pd-107 versus Ag correlations observed in bodies, which have clearly been melted since the accretion of the solar system, must reflect the presence of live short-lived nuclides in the early solar system. The state also mediates in all types of social conflicts, and supplies necessary social-infrastructural conditions for society as a whole. The discoverers suggest that the coalescence and differentiation of iron-cored small planets may have occurred 10 million years after a nucleosynthetic event. In this view, the primary role of the state in practice is to enforce the existing system of unequal property and personal rights, class domination, and exploitation. Radiogenic Ag-107 was first discovered in the Santa Clara meteorite in 1978. The Marxist philosophy of the state is based on the conflict theory - specifically, on the idea of class conflict. Iron meteorites are the only objects with a high enough Pd/Ag ratio to yield measurable variations in Ag-107 abundance. They stand in opposition to adherents of the natural rights theory, who tend to be libertarians, falling on the right wing of liberalism and arguing for a "minimal" state. The palladium isotope Pd-107 decays by beta emission to Ag-107 with a half-life of 6.5 million years. In most cases, they fall on the left wing of liberalism, being social liberals ("New Deal" liberals; see American liberalism) and arguing for a welfare state. The primary decay products before Ag-107 are palladium (element 46) isotopes and the primary products after are cadmium (element 48) isotopes. On the other hand, there are also liberals who subscribe to the contractarian theory. The primary decay mode before the most abundant stable isotope, Ag-107, is electron capture and the primary mode after is beta decay. Critics argue that they do not exist at all, since they are not evident from any observations of nature. Isotopes of silver range in atomic weight from 93.943 u (Ag-94) to 123.929 u (Ag-124). However, there has been considerable debate among liberals as to what these natural rights actually are. This element also has numerous meta states with the most stable being Ag-128m (t* 418 years), Ag-110m (t* 249.79 days) and Ag-107m (t* 8.28 days). The liberal philosophy of the state holds that the powers of any state are restricted by natural rights that exist independently of the human mind and overrule any social contract. All of the remaining radioactive isotopes have half-lifes that are less than an hour and the majority of these have half lifes that are less than 3 minutes. Historically, liberals have been less concerned with determining what the state should do and far more interested in stipulating what the state shouldn't do. Twenty-eight radioisotopes have been characterised with the most stable being Ag-105 with a half-life of 41.29 days, Ag-111 with a half-life of 7.45 days, and Ag-112 with a half-life of 3.13 hours. For example, John Locke believed that individual property rights existed prior to the creation of the state, while the state's main job should be to preserve those rights. Naturally occurring silver is composed of the two stable isotopes Ag-107 and Ag-109 with Ag-107 being the more abundant (51.839% natural abundance). In this view, some or even all "rights" exist naturally and are not created by the state. In December 2001 the silver price was $4.15 per ounce, and in February 2006 it had risen to $9.50 per ounce [1]. Liberalism, in the classical sense, is based mainly on the natural rights theory. In 1980 the silver price rose to an all-time high of $49.45 per troy ounce. The state provides public goods and other kinds of collective consumption, while preventing individuals from free-riding (taking advantage of collective consumption without paying) by forcing them to pay taxes. Over the last 100 years the price of silver and the gold/silver ratio has fluctuated greatly due to competing industrial and store of value demands. In contractarian thinking, the state should express the public interest, the interests of the whole society, and reconcile it with the separate interests of individuals. In turn, copper is about 1/70th as valuable as silver. Contractarianism is the foundation of modern democracy, as well as most forms of socialism and some types of liberalism. However, now silver is relatively cheap compared to other precious metals, with a mass of silver worth only about 1/60th the same mass of gold. It is also the only major philosophy of the state that does not fall within any single political ideology - perhaps because several different ideologies have adopted it as their own. Because the majority of the world's silver deposits are concentrated in the Americas, silver was far more valuable before the Age of Discovery; on average, about 1/6th or 1/7th the price of gold. Contractarianism, as the name implies, is based on the social contract theory. According to the Secretary of Economics of Mexico, it produced 80,120,000 troy ounces (2492 metric tons) in 2000, about 15% of the annual production of the world. There are at least five major philosophies of the state today, the last four of which correspond to specific political ideologies: contractarianism, liberalism, Marxism, conservatism, and anarchism. Mexico is the largest silver producer. The conflict theory, in particular, is often combined with one of the other three in order to separate the illegitimate states (those created through conflict and subjugation) from the legitimate ones. Commercial grade fine silver is at least 99.9% pure silver and purities greater than 99.999% are available. In practice, most people (and most political philosophies) subscribe to a combination of two or more of the above theories - arguing, for example, that different states have different origins. This metal is also produced during the electrolytic refining of copper. These four theories can accommodate the full spectrum of political views. The principal sources of silver are copper, copper-nickel, gold, lead and lead-zinc ores obtained from Canada, Cobalt, Ontario , Mexico, Peru, Australia and the United States. They are:. Silver is found in native form, combined with sulfur, arsenic, antimony, or chlorine and in various ores such as argentite (Ag2S) and horn silver (AgCl). There are four theories about the origin (and indirectly the justification) of the state. The largest silver ore deposits in the United States were discovered at the Comstock Lode in Virginia City, Nevada, in 1859. Recent philosophers like John Rawls and Robert Nozick were more concerned with distributive justice and the morality of exercising political power. Notable "silver rushes" were in Colorado, Nevada, Cobalt, Ontario , California and the Kootenay region of British Columbia, notably in the Boundary and "Silvery Slocan". Philosophers such as Thomas Hobbes, John Locke, and Jean-Jacques Rousseau pondered issues concerning the ideal and actual roles of the state. Silver mining was a driving force in the settlement of western North America, with major booms for silver and associated minerals (lead, mostly) in the galena ore silver is most commonly found in. In the modern era, these philosophies emerged with the rise of capitalism, which coincided with the (re)emergence of the state as a separate and centralized sector of society. The Rio de la Plata was named after silver (in Spanish, plata), and in turn lent the meaning of its name to Argentina. Different political philosophies have distinct opinions concerning the state as a domestic organization. The rise and fall of its value affected the world market. Many (especially those who favour constitutional theories of international law) therefore reject as outdated the idea of sovereignty, and view the state as just the chief political subdivision of the planet. Silver, which was extremely valuable in China, became a global commodity, contributing to the rise of the Spanish Empire. But the trend at the moment is for the power of superstate levels of governance to increase, and there is no sign of this increase abating. The conquistador Pizarro was said to have resorted to having his horses shod with silver horseshoes due to the metal's abundance, in contrast to the relative lack of iron in Peru. However, although states are often influenced in their decisions and no longer hold an absolute jurisdiction over their internal affairs, they are nonetheless much stronger in relation to international organizations or to other states than lower (substate) political subdivisions normally are. Europeans found a huge amount of silver in the New World in Zacatecas and Potosí, which triggered a period of inflation in Europe. The study of political economy, which evolved into the modern study of economics, deals with these specific questions in more detail. Occasionally, the word "silver" is used rather than argent; sometimes this is done across-the-board, sometimes to avoid repetition of the word "argent" in blazon. North American Free Trade Agreement, European Union, it is always controversial to do so, and opens the question of whether these blocs are in fact simply larger states. In heraldry, the argent, in addition to being shown as silver (this has been shown at times with real silver in official representations), can also been shown as white. Although many states (by their own decision) increasingly cede these powers to trade bloc entities, e.g. The metal mercury was thought of as a kind of silver, though the two elements are chemically unrelated; its Latin and English names, hydrargyrum ("watery silver") and quicksilver, respectively, reflect this history. One of the most basic characteristics of a modern state is regulation of property rights, investment, trade and the commodity markets (in food, fuel, etc.) typically using its own currency. One of the alchemical symbols for silver is a crescent moon with the open part on the left (see picture, right). These cases are sometimes called "failed states". Associated with the moon, as well as with the sea and various lunar goddesses, the metal was referred to by alchemists by the name luna. For example, in countries such as Somalia, Iraq, Afghanistan, and the Democratic Republic of the Congo, the central state has so far not succeeded in monopolizing the legitimate use of force, and must compete with various local warlords. In Ancient Egypt and Medieval Europe, it was often more valuable than gold. Many institutions that have been called "states" do not live up to this definition. Its value as a precious metal was long considered second only to gold. For Weber, this was an "ideal type", or model, or pure case of the state. Silver has been used for thousands of years for ornaments and utensils, for trade, and as the basis for many monetary systems. Also in this tradition, the state differs from the "government": the latter refers to the group of people who make decisions for the state. It is mentioned in the book of Genesis, and slag heaps found in Asia Minor and on the islands of the Aegean Sea indicate that silver was being separated from lead as early as the 4th millennium BC. In this tradition, Max Weber and Norbert Elias defined the state as an organization of people that has a monopoly on the legitimate use of force in a particular geographic area. Silver (from Anglo-Saxon seolfor, compare Old High German silabar; Ag is from the Latin argentum) has been known since ancient times. The English political philosopher Thomas Hobbes argued that in order to avoid a multi-sided civil war, in which life was "solitary, poor, nasty, brutish, and short", individuals must necessarily surrender many of their "natural rights" -- including that of attacking each other -- to the "Leviathan", a unified and centralized state. Some other uses for silver are as follows:. Those studying this dimension emphasize the relationship between the state and its people. Its salts, especially silver nitrate and silver halides, are also widely used in photography (which is the largest single end use of silver). Looked at from the point of view of an individual nation, the state is a centralized organization of the whole country. The principal use of silver is as a precious metal. See The Montevideo Convention and Military Occupation. The most common oxidation state of silver is +1; a few +2 compounds are known as well. Hartzell is a leading proponent of this view, and stresses that the four criteria of article 1 need to be expanded to nine. This metal is stable in pure air and water, but does tarnish when it is exposed to ozone, hydrogen sulfide, or air with sulfur in it. Richard W. Silver halides are photosensitive and are remarkable for the effect of light upon them. Article 1 of the convention is also attacked by those who claim that it fails to take into account the complicated situations of military occupation, territorial cession, and governments in exile. Pure silver also has the highest thermal conductivity, whitest colour, the highest optical reflectivity (although it is a poor reflector of ultraviolet light), and the lowest contact resistance of any metal. However the self-declared republic has not achieved recognition by other states. It has the highest electrical conductivity of all metals, even higher than copper, but its greater cost and tarnishability has prevented it from being widely used in place of copper for electrical purposes. An example in practice was the collapse of central government in Somalia in the early 1990s: the Montevideo convention would imply that the state of Somalia no longer existed, and the subsequently declared republic of Somaliland (comprising part of the so-called "former" Somalia) may meet the criteria for statehood. Silver is a very ductile and malleable (slightly harder than gold) univalent coinage metal with a brilliant white metallic luster that can take a high degree of polish. Which theory is correct is a controversial issue in international law. . On the other hand, article 3 of the convention is attacked by the advocates of the constitutive theory of statehood, where a state exists only insofar as it is recognized by other states. This metal is used in coins, jewelry, tableware, and photography. While the Montevideo is a regional American convention and has no legal effect outside the Americas, some have nonetheless seen it as an accurate statement of customary international law. A soft white lustrous transition metal, it has the highest electrical and thermal conductivity of any metal and occurs in minerals and in free form. This is the declarative theory of statehood. Silver is a chemical element with the symbol Ag (from the traditional abbreviation for the Latin argentum). Also, in article 3 it very clearly states that statehood is independent of recognition by other states. Los Alamos National Laboratory – Silver. A document that is often quoted on the matter is the Montevideo Convention from 1933, the first article of which states:. Now, Acticoat Burn Dressings (activated silver dressings) have largely replaced those earlier treatments. The legal criteria for statehood are not obvious. Silver nitrate (liquid) and silver sulfadiazine cream (SSD Cream) were the "standard of care" for the antibacterial/antibiotic treatment of serious burns until the late 1990's. The nation state has remained the dominant political entity all over the world ever since, even though the many ideologies of the 19th and 20th century have created numerous different ways of running the affairs of nation states, as well as numerous different forms of internal and external organization (see political system and economic system). Colloidal silver is a possible antibacterial / antibiotic treatment that requires further clinical testing to support actual efficacy. In response, conquered and neighboring principalities discarded their old systems and adopted the new model of the nation state. Silver oxide is used as a positive electrode (cathode) in watch batteries. Claiming 'national will' as its justification, Napoleon and the Grande Armee of France swept over Europe. The use of silver fashioned into bullets for firearms is a popular application. Nearly a century and a half after the Peace of Westphalia, the state became fully modern through the French Revolution. In legend, silver is traditionally seen as harmful to supernatural creatures like werewolves and vampires. The growing numbers of civil servants eventually became known as the bureaucracy after the elevation of the Republican ideal. Silver iodide has been used in attempts to seed clouds to produce rain. The state continued to develop as monarchs brought nobles and free towns into line and amassed spectacular resources and prestige. Silver chloride is also a widely used electrode for pH testing and potentiometric measurement. The modern state was born. Silver chloride can be made transparent and is used as a cement for glass. In Germany, the office of the Holy Roman Emperor, the most prominent symbol of lingering institutions of feudalism, was emasculated as a secular authority in favor of the constituent elements of the Holy Roman Empire. Silver fulminate is a powerful explosive. The principle of "cuius regio, eius religio" established at Westphalia and previously in the Peace of Augsburg set a precedent of noninterference in other states' internal affairs that was key in the evolution of the modern state. Silver sulfide, also known as Silver Whiskers, is formed when silver electrical contacts are used in an atmosphere rich in hydrogen sulfide. In 1648, the powers of Europe signed the Treaty of Westphalia which ended the religious violence for purely political motives and the Church was stripped of temporal power - even though religion continued to play a political role as the foundation of the divine right of kings. Used to make solder and brazing alloys, electrical contacts, and high capacity silver-zinc and silver-cadmium batteries. These conflicts culminated in the Thirty Years' War of the 17th century. Silver's catalytic properties make it ideal for use as a catalyst in oxidation reactions; for example, the production of formaldehyde from methanol and air by means of silver screens or crystallites containing a minimum 99.95 weight-percent silver. The bloody conflicts that followed, blending the religious and political, pitted those who asserted the authority of the Pope (and in Germany, the Holy Roman Emperor) against those who asserted the authority of secular authorities and their sovereign ability to make internal policy, particularly when that policy reflected religious affiliation, Roman Catholic or Protestant. The malleability, non-toxicity and beauty of silver make it useful in dental alloys for fittings and fillings. The Reformation was to have a powerful impact on the structure of European politics; the dispute was not only theological, but also threatened the very fabric of the ancient political institutions of feudalism. The metal is chosen for its beauty in the manufacture of jewelry and silverware, which are traditionally made from the silver alloy known as Sterling silver, which is 92.5% silver. The great dynasties of Europe dramatically consolidated power by the beginning of the 16th century; additionally, the external threats to Europe had considerably lessened. The words for "silver" and "money" are the same in at least 14 languages. This shift to more independent, more secular actors would become a major point of controversy in Early Modern Europe. Later, silver was refined and coined in its pure form. The emergence of large, stable land holdings by single dynasties - for instance, France and Castile - enabled them to take a more active and independent role than their traditionally subsidiary role in the earlier middle ages. Silver has been coined to produce money since 700 BC by the Lydians, in the form of electrum. The weakening of the papacy was a major theme of the Middle Ages; the Western Schism in the later 14th century, a dispute over papal succession, was exploited by secular authorities and contributed to their growing power. Common mirrors are backed with aluminium. The Holy Roman Empire, one of the strongest medieval authorities, emerged as a competitor to Papal power under Holy Roman Emperor Frederick Barbarossa, who invaded Italy to press his claims to secular authority in the mid-12th century. Mirrors which need silver's superior reflectivity for visible light are made with silver as the reflecting material in a process called silvering. In 1302, Pope Boniface VIII stated that the political powers of Christendom exercised their prerogatives "at the command and sufferance of the priest." This limited the power of kings, who were obliged to pledge their ultimate allegiance to the Pope. Silver is also used in high voltage contacts because it is the only metal that will not arc across contacts, hence it is extremely safe. This system asserted itself abroad in the form of the Crusades as the Middle Ages progressed. For example, printed circuits are made using silver paints, and computer keyboards use silver electrical contacts. This system produced an extensive framework of institutions - sometimes called "feudalism" - that regulated internal conflict and enabled Western Europe to confront exterior threats, even while no individual secular entity was truly independent in the sense of the modern state. Electrical and electronic products, which need silver's superior conductivity, even when tarnished. Religion, which had rarely been a factor in the power calculations of Ancient Greece and the Roman Empire, became the cornerstone of an extremely loose pan-European defensive bloc under the aegis of the Catholic Church. The solution that evolved out of these affairs was decidedly opposed to the system of independent states and temporary alliances that dominate the modern international system. At the same time, the various kingdoms (and smaller political units) were often involved in wars with each other over territory and succession. The kingdoms of Western Europe were besieged by invaders on the frontiers - first, the Muslim invasions from the south, then a series of new migrations from the east and finally the Viking invasions from the north. The lack of a real successor to the Roman Empire in Western Europe created a power vacuum. Once again, the state became little more than an expression of the ruler's private ownership of a certain area of land. These kingdoms were treated more as land holdings by the royalty that ruled them. Even the kingdom of Charlemagne was fleeting; without the tradition of primogeniture, it dissolved into three smaller kingdoms with the Treaty of Verdun in 843. The "barbarian" (i.e., non-Roman) kingdoms and chieftains that followed the Roman Empire were ephemeral and transitory and bore little resemblance to the modern state. The fall of the Roman Empire in the west and the Great Migrations changed the character of European politics. However, the Roman Republic gave way to the Roman Empire - which, in turn, created the concept of universal empire: the idea that the entire world was (or should be) under the authority of one single legitimate state. Many institutions of the modern state (especially in Western Europe and areas once dominated by Western-European empires) can trace their origins back to Ancient Rome, which inherited the political traditions of the Greeks and developed them further (particularly the rule of law, albeit in incomplete form). Also, notably, the idea of democracy was born in ancient Athens (see Athenian democracy). The city-states of Ancient Greece were the first to establish states whose powers were clearly defined in laws (even if the laws themselves could usually be changed quite easily). Thus, laws limiting the power of monarchs did not develop very far in that region. But the rulers of the Ancient Near East had a long tradition of holding absolute power and claiming the status of god-kings (see hydraulic despotism). It was around this time that the concept of law - one of the foundations of the modern state - began to appear. 1700 BC. One of the earliest known sets of laws, the Code of Hammurabi, has been dated to ca. Since there were no laws and no infrastructure, and since power was exercised arbitrarily, some political theorists and historians do not consider such early forms of despotic rule to have been states in the proper sense of the word; they are sometimes called proto-states. These states were usually despotic and unstable, with the ruler(s) holding absolute power over their subjects until some other ruler(s) displaced them. This control over the land meant control over the people whose livelihoods depended on the land; thus, the first primitive states arose. Eventually, a small group of people found themselves owning the land on which many other people worked for a living. In some parts of the world, notably Mesopotamia and the Nile valley, natural conditions favoured the concentration of land ownership in few hands. Disagreements over the nature and extent of such claims of ownership degenerated into violence and the first "wars". To express that control, various forms of property rights developed, with people claiming different kinds of rights over various areas of land. Thus, control over land became an issue for the first time. The practice of agriculture made it necessary for human beings to build permanent settlements and spend most of their lives in close proximity to the land they cultivated. That lifestyle began to change with the invention of agriculture around the 9th millennium BC. For most of the existence of the human species, people lived as nomadic hunter-gatherers. The birth of the state, in the broadest sense of the word, coincides with the rise of civilization. However, when these terms are used to describe the statehood aspirations of a people who do not currently live in the internationally recognised independent state they would like to inhabit, these terms can be controversial and open to misunderstanding. In most English-speaking counties when the terms state, nation and country are used internally, they are understood by the context in which they are used and are not controversial. The terminology can be further complicated by the use of the word state to mean a non-sovereign sub-entity of as sovereign state, as is done in the United States and Australia. The United Kingdom is an internationally recognised sovereign state, which is also referred to as a country and whose inhabitants have British nationality. For example, Cornwall is considered by some to be a nation in England which is a constituent country, or home nation, of the United Kingdom. In the English language, the terms nation (cultural), country (geographical) and state (political) do have precise meanings, but in daily speech and writing they are often used interchangeably, and are open to different interpretations. A similar association of terms can today be seen in the practice of referring to government buildings as having authority, for example "The White House today released a press statement...". By process of metonymy, the word state became used to refer to both the head of state and the power entity he represented (though the former meaning has fallen out of use). The word "state" originates from the medieval state or throne upon which the head of state (usually a monarch) would sit. Currently, the entire land surface of the Earth is divided among the territories of the roughly two hundred states now existing, with the special case of Antarctica, a variety of disputed territories, and a number of areas where state power exists in theory, but not in practice (the most significant of these being Somalia. Errico Malatesta wrote that "Anarchists generally make use if the word "State" to mean all the collection of institutions, political, legislative, judicial, military, financial, etc., by means of which management of their own affairs, the guidance of their personal conduct, and the care of ensuring their own safety are taken from the people and confided to certain individuals, and these, whether by usurpation or delegation, are invested with the right to make laws over and for all, and to constrain the public to respect them, making use of the collective force of the community to this end.". In common speech, the terms country, nation and state are casually used as synonyms, but in a more strict usage they are distinguished:. See state (law) and state (non-sovereign). The term "state" is also used to describe subnational territorial divisions within a federal system, as in the case of the United States of America. A number of modern commentators have claimed that we are experiencing the decline of the Westphalian state as the principal actor of the international system, pointing to economic, cultural, political, and technological changes in the world, such as globalization and the emergence of regional and supernational groupings such as the European Union. In this sense, the modern state is an entity that enjoys extensive autonomy in its domestic economic and social policy, largely free from interference from other states and powers. The word "state" in contemporary parlance often means the "Westphalian state", in reference to the Peace of Westphalia of 1648 and is used most often in international relations theory. . For more information see government. The "state" can also be defined in terms of domestic conditions, specifically, as conceptualized by Max Weber, "a state is a human community that (successfully) claims the monopoly of the legitimate use of physical force within a given territory." [1] The exact meaning of this definition depends on what is understood by "legitimate". Recognition of the state's claim to independence by other states, enabling it to enter into international agreements, is often important to the establishment of its statehood, although some theories do not make this a requirement - for instance, the Montevideo Convention. A state is an organized political community occupying a definite territory, having an organized government, and possessing internal and external sovereignty. Various groups of people fought each other for control over land or other resources, and the winning side imposed its domination on the losing side. Conflict - Perhaps the simplest of the theories, it holds that the state did not arise out of any conscious decision, but merely as the result of violent conflict. through the consent of the governed) in order to provide for various collective needs that cannot be satisfied through individual efforts, such as national defense, public roads, education, "the general welfare", etc. Social contract - This idea holds that the state is established by the people (i.e. Natural rights - According to this theory, human beings have certain rights that are "natural" (the implications of this word may vary), and establish states for the protection of those rights. Supernatural or natural authority - In this view, the state is either ordained by a higher power (such as God for the "Divine right of kings") or arises naturally out of a presumed human need for order and authority. state refers to the government, and an entity in international law. nation designates a people (however, national and international both confusingly refer as well to matters pertaining to what are strictly states, as in "national capital", "international law"). country is the geographical area. |