Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Silver Roman

Air. Studies have shown that 2500 years ago lead pollution caused by Greek and Roman silver smelters was a significant problem (4). Based on analysis of lake sediments and Greenland s ice, it was found that lead contamination from smelters in southern and central Europe was carried throughout the northern hemisphere. As long ago as the thirteenth century, air pollution has been linked to the burning of coal (4). The main concern was the smell from the sulfur in the coal and the effects of the soot. It was not until many years later that the effects of air pollution on people s health were discovered. [Pg.77]

Ag2 SO4 The polyatomic sulfate ion indicates that this is an ionic compound. Silver is always +1, so no Roman numeral is needed silver sulfate. [Pg.147]

The name copper and the symbol Cu are derived from the Latin cuprum, after the island of Cyprus, where the Romans first obtained copper metal. The symbols Ag and Au for silver and gold come from the Latin names for these elements argentum... [Pg.1474]

Romans mined the mineral cinnabar (HgS) from deposits in Spain 2000 years ago, and in the sixteenth century the Spanish shipped mercury obtained from the same ore deposits to the Americas for the extraction of silver. Mercury is an important component of street lamps and fluorescent lights. It is used in thermometers and barometers and in gas-pressure regulators, electrical switches, and electrodes. [Pg.1479]

Over the next 30 years, Patterson used mass spectroscopy and clean laboratory techniques to demonstrate the pervasiveness of lead pollution. He traced the relationships between America s gas pump and its tuna sandwiches, between Roman slaves and silver dimes, and between Native American Indians and polar snows. He forged as close a connection between science and public policy as any physical scientist outside of medical research. He made the study of global pollution a quantitative science. And marrying his stubborn determination to his passionate conviction that science ought to serve society, Patterson never budged an inch. [Pg.180]

Anheuser, K. and J. P. Northover (1994), Silver plating on Roman and Celtic coins from Britain - a technical study, B. Numismatic J. 64, 22-32. [Pg.556]

Jales mine is located near Vila Pouca de Aguiar, North Portugal (Fig.1). It has been exploited since Roman times, in a relatively sulfide-rich deposit. In modern times it was mined for gold and silver between 1933 and 1992. [Pg.375]

Mercury (Hg, [Xe + 4/14]5 /l06.v2), named after the planet Mercury (dedicated to the Roman God Mercurius), the symbol came from the Latin name hydrargyrum (liquid silver). Known since ancient times. [Pg.469]

Mercury - the atomic number is 80 and the chemical symbol is Hg. The name derives from the Roman god Mercury , the nimble messenger of the gods, since the ancients used that name for the element, which was known from prehistoric times. The chemical symbol, Hg, derives from the Greek hydragyrium for liquid silver or quick silver. [Pg.14]

ORIGIN OF NAME Named for the mythological Roman god of travel, Mercurius, the messenger to other gods. Its symbol Hg Is from the Latin word hydrargyrus, meaning "liquid silver."... [Pg.168]

Some Ancient Silver Mines. The gold and silver mines of Spain are mentioned in the Apocrypha. In the days of the Maccabees they were in possession of the Romans Now Judas had heard of the fame of the Romans.. .. It was told him also of their wars. . . and what they had done in the Country of Spain, for die winning of the mines of the silver and gold which is there. .. (136). [Pg.16]

The terminology of the elements suffuses our language, sometimes divorced from the questions of composition to which it once referred. Plumbing today is more likely to be made from plastic pipes than from the Romans (lead) the lead in pencils is no such thing. Cadmium Red paints often contain no cadmium at all. Tin cans have no more than the thinnest veneer of metallic tin it is too valuable for more. The American nickel contains relatively little of that metal. And when was the last time that a Frenchman s pocketful of jingling argent made of real silver ... [Pg.5]

The Romans were the first to discover the vicissitudes of a culture a that derives its power from finance. Gold, like any other commodity, I does not have an absolute value it depends on how much of it there is around. The gold denomination of the Roman Empire was the aureus, which was worth twenty-five silver denarii. But the later emperors were prone to grotesque displays of wealth - Nero constracted a Golden House with jewel-encrusted walls. These excesses removed so much gold and silver from circulation that the coin minters were forced to add other metals to the aureus and the denarius. By the third century ad the denarius was 98 per cent copper. Naturally, a trader will not give as much for a coin that is mostly copper as for one that is pure silver, even if they are called the same thing and bear the same stamp. [Pg.56]

Geld, iron, and lead were procured in the South, and soma tin in the North of Spain but the gold was probably of small amount, and silver was the chief mineral wealth of the country. Of this mineral Pliky says it was found in all tho Roman provinces, but the best in Spain, and that in a barren soil, even in the... [Pg.843]


See other pages where Silver Roman is mentioned: [Pg.60]    [Pg.224]    [Pg.31]    [Pg.83]    [Pg.396]    [Pg.369]    [Pg.1174]    [Pg.1201]    [Pg.182]    [Pg.183]    [Pg.147]    [Pg.157]    [Pg.178]    [Pg.229]    [Pg.282]    [Pg.19]    [Pg.60]    [Pg.336]    [Pg.194]    [Pg.286]    [Pg.74]    [Pg.122]    [Pg.132]    [Pg.153]    [Pg.204]    [Pg.393]    [Pg.53]    [Pg.82]    [Pg.1]    [Pg.2]    [Pg.186]    [Pg.288]    [Pg.307]    [Pg.747]    [Pg.843]   
See also in sourсe #XX -- [ Pg.112 , Pg.113 ]




SEARCH



Romans

© 2024 chempedia.info