The history of the silver

                                THE HISTORY OF SILVER
Silver's history is long. The first evidence of silver mining dates back to 3000 B.C., in Turkey and Greece, according to the RSC. Ancient people even figured out how to refine silver. They heated the silver ore and blew air over it, a process called cupellation. The silver does not react to the air, but the base metals such as lead and copper oxidize and separate from the precious metal.

Silver forms in star explosions called supernovae, as does gold. A study published in September 2012 in the journal Astronomy and Astrophysics found that smaller stars that explode produce silver, while larger stars produce gold.

Silver really exploded on Earth, however, when Europeans landed on the New World in 1492. Spanish conquerors discovered that South America was home to rich veins of silver and silver ore, and they mined that wealth enthusiastically; according to the Silver Institute, an industry trade group, 85 percent of the silver produced worldwide came from Bolivia, Peru and Mexico between 1500 and 1800.


Silver played a big role in making early photography possible. Silver nitrate (silver combined with nitrogen and oxygen molecules) was used on photographic plates in the first, clunky cameras, according to the RSC, because it reacts to light by turning black — enabling photographers to capture an instant of light. Even with the rise of digital cameras, silver remains part of the traditional photographic process. As of 2003, the most recent year data is available, 1,920 metric tons of silver each year went to use for photographic purposes. Electrical and electronic uses were the second most-common single industrial use for silver, with 1,230 metric tons going into wires and gadgets in 2003. Jewelry, sterling silver and silver electroplated objects ran a distant third, using only 486 metric tons. Another 1,810 metric tons went to various other uses.

How was silver discovered?

                                   How was silver discovered?

The mining of silver began some 5000 years ago.
Silver was first mined in about 3000 B.C. in Anatolia (modern day Turkey). These early lodes were a valuable resource for the civilizations that flourished in the Near East, Crete, and Greece throughout antiquity.

In about 1200 B.C., the center of silver production shifted to Greece’s Laurium mines, where it continued to feed the region’s burgeoning empires. In about 100 A.D., Spain became the capital of silver production. The Spanish mines were the major supplier for the Roman Empire and an essential trading component along the Asian spice routes.

With the Moorish invasion of Spain, the practice of silver mining migrated to a broader range of countries, most of them in Central Europe. Several major silver mine discoveries occurred between 750 and 1200 A.D., including the Germany and Eastern Europe.

The 500-year period from 1000 and 1500 A.D. was one of significant growth thanks to an increased number of mines as well as improvements in production and technology.

                                                                        SILVER MINE

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Recommendation

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to expand your knowledge

Other properties

                    OTHER PROPERTIES

Overview

Name Silver

Symbol Ag

Atomic Number 47

Atomic Weight 107.8682

Density 10.49 g / cm3

Melting Point 961.78 ° C

Boiling Point 2162 ° C

                                                                                          

Thermal properties

Phase Solid

Melting Point 961.78 ° C

Boiling Point 2162 ° C

Absolute Melting Point 1234.93 K

Absolute Boiling Point 2435 K

Critical Pressure N / A

Critical Temperature N / A

                                                                                                              

Heat of Fusion 11.3 kJ / mol

Heat of Vaporization 255 kJ / mol

Heat of Combustion N / A

Specific Heat 235 J / (kg K) [note]

Adiabatic Index N / A

Neel Point N / A

Thermal Conductivity 430 W / (m K)

Thermal Expansion 0.0000189 K -1

Properties of Silver and more

           

                                    PROPERTIES OF SILVER

PART 1
Color	White
Luster	Lustrous shine and is capable of a high degree of polish
Ductility	It can be beaten into extremely thin sheets
Malleability	Capable of being shaped or bent
Conductivity	Excellent electrical and heat conductor. It has the highest electrical and thermal conductivity of any metal
Solubility	Solubility (ability to be dissolved)
Hardness	A relatively soft metal
Density	It is a dense metal

PART 2
Chemical Formula	Ag
Reactivity	Silver does not react with O2, N2, or H2 at normal temperatures
Oxidation	A thin film on the surface of silver as a result of oxygen absorption,that increases with temperature and pressure
Compounds	Silver forms complex compounds, most of which are soluble in water
Cyanidation	The extraction from ores requires cyanidation—the dissolution of silver in an alkaline solution of sodium cyanide with an inlet for air

Click here and you will be able to view images of silver


has to do with the video
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The principle

Silver is a chemical element with symbol Ag and atomic number 47,the silver has long been valued as a precious metal it is also  used in coins ,solar panels, water filtration, jewelry and ornaments , the Silver is used industrially in electrical contacts and conductors, in specialized mirrors, window coatings and in catalysis of chemical reactions. Its compounds are used in photographic film and X-rays. Silver is produced during certain types of supernova explosions by nucleosynthesis from lighter elements through the r-process, a form of nuclear fusion that produces many elements heavier than iron, of which silver is one
Among metals, silver has the highest thermal conductivity 

SILVER PICTURES

Appear in the images some uses of silver, look