424 BC

At room temperature, sulfur is a soft bright yellow solid. Although sulfur is infamous for its smell - frequently compared to rotten eggs - the odor is actually characteristic of hydrogen sulfide (H2S); elemental sulfur is odorless. It burns with a blue flame that emits sulfur dioxide, notable for its peculiar suffocating odor. Sulfur is insoluble in water but soluble in carbon disulfide and other nonpolar solvents. Common oxidation states of sulfur include −2, +2, +4 and +6. Sulfur forms stable c ...

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Sulfur, Sulfur - Notable characteristics, Sulfur - Applications, Sulfur - Biological role, Sulfur - Environmental Impact, Sulfur - History, Sulfur - Occurrence, Sulfur - Compounds, Sulfur - Isotopes, Sulfur - Precautions, Sulfur - Spelling

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The founder of this dynasty was supposedly Achaemenes (Old Persian Haxāmaniš "Of Friendly Mind"). He was succeeded by his son Teispes (Cišpi), who first took the title King of Anšān after seizing that city from the Elamites. Inscriptions indicate that when Teispes died, two of his sons shared the throne as Cyrus I (Kūru), king of Anšān, and Ariaramnes (Ariyāramna "Having the Iranians at Peace"), king of Parsua (later called Pārsa "Persia", hence Fārsi, the native name for modern Per ...

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Achaemenid dynasty, Achaemenid dynasty - History, Achaemenid dynasty - Decline, Achaemenid dynasty - System of governing, Achaemenid dynasty - Contributions, Achaemenid dynasty - Art, Achaemenid dynasty - Achaemenid rulers

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Alcibiades was born in Athens, the son of Cleinias and Deinomache, who belonged to the family of the Alcmaeonidae. He was a near relative of Pericles, who, after the death of Cleinias at the Battle of Coronea (447 BC), became his guardian. Thus early deprived of his father's control, possessed of great personal beauty and the heir to great wealth, which was increased by his marriage, he showed himself self-willed, capricious and passionate, and indulged in the most insolent behaviour. Nor did the instructors of his early manhood supply the c ...

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Alcibiades, Alcibiades - Life, Alcibiades - Sources about the life of Alcibiades, Alcibiades - Notes

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In the winter of 424/3, around the same time as the Battle of Delium, the Spartan general Brasidas besieged Amphipolis, an Athenian colony in Thrace on the Strymon river.1 The city was defended by the Athenian general Eucles, who sent for help from Thucydides, who was stationed at Thasos with seven Athenian ships.2 In order to capture the city before Thucydides arrived, Brasidas offered to let everyone who wished to stay keep their propery, and offered safe passage to those who wante ...

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Battle of Amphipolis, Battle of Amphipolis - Capture of Amphipolis, 424/3 BC, Battle of Amphipolis - Armistice of 423 BC, Battle of Amphipolis - Battle of Amphipolis, 422 BC, Battle of Amphipolis - Results, Battle of Amphipolis - Notes

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When the armistice ended in 422, Cleon arrived in Thrace with a force of 30 ships, 1200 hoplites, and 300 cavalry, along with many other troops from Athens' allies. He recaptured Torone and Scione; at Scione, the Spartan commander Pasitelidas was killed. He then took up position at Eion, while Brasidas took his position at Cerdylium. Brasidas about 2000 hoplites and 300 cavalry, plus some other troops in Amphipolis, but he did not feel that he could defeat Cleon in a pitched battle. Brasidas then moved his forces back into Amphipolis, and Cl ...

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Battle of Amphipolis, Battle of Amphipolis - Capture of Amphipolis, 424/3 BC, Battle of Amphipolis - Armistice of 423 BC, Battle of Amphipolis - Battle of Amphipolis, 422 BC, Battle of Amphipolis - Results, Battle of Amphipolis - Notes

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Bronze age civilizations in the Indian subcontinent laid the foundations for modern Indian civilization, including urban settlements and the development of Vedic beliefs, which form the core of Hinduism. Many historians claim that the rise, and eventual decline of the Indus Valley Civilization, and the migration of nomadic peoples from Central Asia and the Caucasus into the Indian subcontinent shaped the its history during this period. History of India - Indus Valley Civilization. See also:

History of India, History of India - The Paleolithic era, History of India - The Neolithic era, History of India - The Bronze age, History of India - Indus Valley Civilization, History of India - Vedic civilization, History of India - The Mahajanapadas, History of India - Persian and Greek invasion, History of India - Achaemenid Empire, History of India - Alexander the Great, History of India - Greco-Buddhist period, History of India - The Magadha Empire, History of India - Shishunaga dynasty, History of India - Nanda Dynasty, History of India - Maurya dynasty, History of India - Shunga dynasty, History of India - Early Middle Kingdoms - the golden age, History of India - Satavahana Empire, History of India - Kushan Empire, History of India - Gupta dynasty, History of India - Huna invasion, History of India - Indo-Sassanians, History of India - Late Middle Kingdoms - the classical age, History of India - Harsha's empire, History of India - The Chalukyas and Pallavas, History of India - Chola empire, History of India - The Pratiharas Palas and Rashtrakutas, History of India - The Rajputs, History of India - Vijayanagar Empire, History of India - The Islamic Sultanates, History of India - Delhi Sultanate, History of India - The Mughal era, History of India - Mughal Empire, History of India - The Maratha confederacy, History of India - The Kingdom of Mysore, History of India - The Punjab, History of India - Durrani Empire, History of India - Colonial era, History of India - Company rule, History of India - The British Raj, History of India - The independence movement, History of India - Republic of India, History of India - Textbooks and surveys

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Hydrogen sulfide has the characteristic smell of rotten eggs. Dissolved in water, hydrogen sulfide is acidic and will react with metals to form a series of metal sulfides. Natural metal sulfides are common, especially those of iron. Iron sulfide is called pyrite, the so called fool's gold. Interestingly, pyrite can show semiconductor properties.[1] Galena, a naturally occurring lead sulfide, was the first semiconductor discovered, and found a use as a signal rectifier in the "cat' ...

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Sulfur, Sulfur - Notable characteristics, Sulfur - Applications, Sulfur - Biological role, Sulfur - Environmental Impact, Sulfur - History, Sulfur - Occurrence, Sulfur - Compounds, Sulfur - Isotopes, Sulfur - Precautions, Sulfur - Spelling

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By 500 BC, sixteen monarchies and 'republics' known as the Mahajanapadas stretched across the Indo-Gangetic plains from modern-day Afghanistan to Bangladesh. The largest of these nations were Magadha, Kosala, Kuru and Gandhara. The right of a king to his throne, no matter how it was gained, was usually legitimized through religious right and genealogies concocted by priests who ascribed divine origins to the rulers. There is some controversy about how closely the political entities of this period can be represented by those mentioned in the ...

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History of India, History of India - The Paleolithic era, History of India - The Neolithic era, History of India - The Bronze age, History of India - Indus Valley Civilization, History of India - Vedic civilization, History of India - The Mahajanapadas, History of India - Persian and Greek invasion, History of India - Achaemenid Empire, History of India - Alexander the Great, History of India - Greco-Buddhist period, History of India - The Magadha Empire, History of India - Shishunaga dynasty, History of India - Nanda Dynasty, History of India - Maurya dynasty, History of India - Shunga dynasty, History of India - Early Middle Kingdoms - the golden age, History of India - Satavahana Empire, History of India - Kushan Empire, History of India - Gupta dynasty, History of India - Huna invasion, History of India - Indo-Sassanians, History of India - Late Middle Kingdoms - the classical age, History of India - Harsha's empire, History of India - The Chalukyas and Pallavas, History of India - Chola empire, History of India - The Pratiharas Palas and Rashtrakutas, History of India - The Rajputs, History of India - Vijayanagar Empire, History of India - The Islamic Sultanates, History of India - Delhi Sultanate, History of India - The Mughal era, History of India - Mughal Empire, History of India - The Maratha confederacy, History of India - The Kingdom of Mysore, History of India - The Punjab, History of India - Durrani Empire, History of India - Colonial era, History of India - Company rule, History of India - The British Raj, History of India - The independence movement, History of India - Republic of India, History of India - Textbooks and surveys

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Around the 5th century BCE, the northern Indian subcontinent was invaded by the Achaemenid Empire and the Greeks of Alexander the Great's army. This had important repercussions for Indian civilisation, as the political systems of the Persians would have an influence on later Indian political philosophy, including the administration of the Mauryan dynasty, and a melting pot of Indian, Persian, Central Asian and Greek culture was created in the modern region of Afghanistan, producing a unique hybrid culture. History of India - Achaemenid EmpireSee also:

History of India, History of India - The Paleolithic era, History of India - The Neolithic era, History of India - The Bronze age, History of India - Indus Valley Civilization, History of India - Vedic civilization, History of India - The Mahajanapadas, History of India - Persian and Greek invasion, History of India - Achaemenid Empire, History of India - Alexander the Great, History of India - Greco-Buddhist period, History of India - The Magadha Empire, History of India - Shishunaga dynasty, History of India - Nanda Dynasty, History of India - Maurya dynasty, History of India - Shunga dynasty, History of India - Early Middle Kingdoms - the golden age, History of India - Satavahana Empire, History of India - Kushan Empire, History of India - Gupta dynasty, History of India - Huna invasion, History of India - Indo-Sassanians, History of India - Late Middle Kingdoms - the classical age, History of India - Harsha's empire, History of India - The Chalukyas and Pallavas, History of India - Chola empire, History of India - The Pratiharas Palas and Rashtrakutas, History of India - The Rajputs, History of India - Vijayanagar Empire, History of India - The Islamic Sultanates, History of India - Delhi Sultanate, History of India - The Mughal era, History of India - Mughal Empire, History of India - The Maratha confederacy, History of India - The Kingdom of Mysore, History of India - The Punjab, History of India - Durrani Empire, History of India - Colonial era, History of India - Company rule, History of India - The British Raj, History of India - The independence movement, History of India - Republic of India, History of India - Textbooks and surveys

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Amongst the 16 Mahajanapadas, the kingdom of Magadha rose to prominence under a number of dynasties that peaked in power under the reign of Asoka Maurya, one of India's most legendary and famous emperors. The kingdom of Magadha had emerged as a major power following the subjugation of two neighbouring kingdoms, and possessed an unparalleled military. History of India - Shishunaga dynasty. According to tradition, the Shishunaga dynasty founded the Magadha Empire in 684 BC, whose capital was Rajagriha, later ...

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History of India, History of India - The Paleolithic era, History of India - The Neolithic era, History of India - The Bronze age, History of India - Indus Valley Civilization, History of India - Vedic civilization, History of India - The Mahajanapadas, History of India - Persian and Greek invasion, History of India - Achaemenid Empire, History of India - Alexander the Great, History of India - Greco-Buddhist period, History of India - The Magadha Empire, History of India - Shishunaga dynasty, History of India - Nanda Dynasty, History of India - Maurya dynasty, History of India - Shunga dynasty, History of India - Early Middle Kingdoms - the golden age, History of India - Satavahana Empire, History of India - Kushan Empire, History of India - Gupta dynasty, History of India - Huna invasion, History of India - Indo-Sassanians, History of India - Late Middle Kingdoms - the classical age, History of India - Harsha's empire, History of India - The Chalukyas and Pallavas, History of India - Chola empire, History of India - The Pratiharas Palas and Rashtrakutas, History of India - The Rajputs, History of India - Vijayanagar Empire, History of India - The Islamic Sultanates, History of India - Delhi Sultanate, History of India - The Mughal era, History of India - Mughal Empire, History of India - The Maratha confederacy, History of India - The Kingdom of Mysore, History of India - The Punjab, History of India - Durrani Empire, History of India - Colonial era, History of India - Company rule, History of India - The British Raj, History of India - The independence movement, History of India - Republic of India, History of India - Textbooks and surveys

Read more here: » History of India: Encyclopedia II - History of India - The Magadha Empire

Sulfur has 18 isotopes, of which four are stable: 32S (95.02%), 33S (0.75%), 34S (4.21%), and 36S (0.02%). Other than 35S, the radioactive isotopes of sulfur are all short lived. Sulfur-35 is formed from cosmic ray spallation of argon-40 in the atmosphere. It has a half-life of 87 days. When sulfide minerals are precipitated, isotopic equilibration among solids and liquid may cause small differences in the dS-34 values of co-genetic minerals. The differences between minerals can b ...

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Sulfur, Sulfur - Notable characteristics, Sulfur - Applications, Sulfur - Biological role, Sulfur - Environmental Impact, Sulfur - History, Sulfur - Occurrence, Sulfur - Compounds, Sulfur - Isotopes, Sulfur - Precautions, Sulfur - Spelling

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Carbon disulfide, Carbon oxysulfide, hydrogen sulfide, and sulfur dioxide should all be handled with care. Although sulfur dioxide is sufficiently safe to be used as a food additive in small amounts, at high concentrations it reacts with moisture to form sulfurous acid which in sufficient quantities may harm the lungs, eyes or other tissues. In creatures without lungs such as insects or plants, it otherwise prevents respiration. Hydrogen sulfide is quite toxic (more toxic than cyanide). Although very smelly at first, it quickly deadens the sense of smell, so potential victims may be unaware ...

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Sulfur, Sulfur - Notable characteristics, Sulfur - Applications, Sulfur - Biological role, Sulfur - Environmental Impact, Sulfur - History, Sulfur - Occurrence, Sulfur - Compounds, Sulfur - Isotopes, Sulfur - Precautions, Sulfur - Spelling

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After the Arab-Turkic invasion of India's ancient northern neighbour Persia, various short lived Islamic empires invaded and spread across the subcontinent over a period of 1000 years. Prior to Turkish invasions, Muslim trading communities flourished throughout coastal South India, particularly in Kerala. In the 10th and 11th centuries, Turks and Afghans invaded India and established the Sultanate of Delhi at the beginning of the 13th century. The Slave dynasty and Khilji empire managed to conquer large areas of northern India approximate to the ancient extent of the Guptas, but were ultimately unsuccessful in c ...

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History of India, History of India - The Paleolithic era, History of India - The Neolithic era, History of India - The Bronze age, History of India - Indus Valley Civilization, History of India - Vedic civilization, History of India - The Mahajanapadas, History of India - The Magadha empire, History of India - Shishunaga dynasty, History of India - Nanda dynasty, History of India - Maurya dynasty, History of India - Shunga dynasty, History of India - Early Middle Kingdoms - the golden age, History of India - Satavahana empire, History of India - Kushan empire, History of India - Gupta dynasty, History of India - Late Middle Kingdoms - the classical age, History of India - Harsha's empire, History of India - The Chalukyas and Pallavas, History of India - Chola empire, History of India - The Pratiharas Palas and Rashtrakutas, History of India - The Rajputs, History of India - The Islamic Sultanates, History of India - Vijayanagar empire, History of India - The Mughal era, History of India - The Maratha confederacy, History of India - The Kingdom of Mysore, History of India - The Punjab, History of India - Company rule, History of India - The British Raj, History of India - The independence movement, History of India - Independent India, History of India - Textbooks and Surveys

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Although there is no certain evidence to prove it, the rhetorical character of his narrative suggests that Thucydides was at least familiar with the teachings of the Sophists. These men were traveling lecturers, who frequented Athens and other Greek cities. It has also been asserted that Thucydides' strict focus on cause and effect, his fastidious devotion to observable phenomena to the exclusion of other factors and his austere prose style were influenced by the methods and thinking of early medical writers such as Hippocrates of Kos. Some have gone so far as to assert th ...

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Thucydides, Thucydides - Life, Thucydides - Education, Thucydides - Character, Thucydides - The History of the Peloponnesian War, Thucydides - Quotes, Thucydides - Notes

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Lenses do not form perfect images, and there is always some degree of distortion or aberration introduced by the lens which causes the image to be an imperfect replica of the object. Careful design of the lens system for a particular application ensures that the aberration is minimized. There are several different types of aberration which can affect image quality. Lens optics - Spherical aberration. Spherical aberration is caused because spherical surfaces are not the ideal shape wit ...

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Lens optics, Lens optics - History, Lens optics - Lens construction, Lens optics - Imaging properties, Lens optics - Aberrations, Lens optics - Spherical aberration, Lens optics - Coma, Lens optics - Chromatic aberration, Lens optics - Multiple lenses, Lens optics - Uses of lenses

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One important use of lenses is as a prosthetic for the correction of visual impairments such as myopia, hyperopia, presbyopia, and astigmatism. See corrective lens, contact lens, eyeglasses. Another use is in imaging systems such as a monocular, binoculars, telescope, spotting scope, telescopic gun sight, theodolite, microscope, and camera (photographic lens). A single convex lens mounted in a frame ...

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Lens optics, Lens optics - History, Lens optics - Lens construction, Lens optics - Imaging properties, Lens optics - Aberrations, Lens optics - Spherical aberration, Lens optics - Coma, Lens optics - Chromatic aberration, Lens optics - Multiple lenses, Lens optics - Uses of lenses

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At the start of the second millennium B.C. it was a Minoan colony and in 424 BC it came under the sway of Athens. In Ancient Greek Mythology, Kythira was considered to be the island of celestial Aphrodite, the Goddess of love, (cf. Cyprus, the island of Aphrodite, the Goddess of Sex). Over the centuries it knew a succession of conquerors from the Romans to the Byzantines, Venetians and Turks, and it was frequently looted by Barbary pirates. Kytherians still talk about the destruction and looting by Barbarossa, it has become an intrinsic part ...

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Kythira, Kythira - History, Kythira - Kythira Today, Kythira - Municipalities, Kythira - Villages, Kythira - Map of Kythira Island

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The middle period, especially that associated with the Gupta dynasty, is known as India's Golden Age, a time of unparalleled cultural development. The Kushanas invaded northwestern India about the middle of the 1st century CE, from Central Asia, and founded an empire that eventually stretched from Peshawar to the middle Ganges and, perhaps, as far as the Bay of Bengal. It also included ancient Bactria (in the north of modern Afghanistan) and southern Tajikistan. Their power also extended into Turkestan and helped spread Buddhism to China. In ...

See also:

History of India, History of India - The Paleolithic era, History of India - The Neolithic era, History of India - The Bronze age, History of India - Indus Valley Civilization, History of India - Vedic civilization, History of India - The Mahajanapadas, History of India - Persian and Greek invasion, History of India - Achaemenid Empire, History of India - Alexander the Great, History of India - Greco-Buddhist period, History of India - The Magadha Empire, History of India - Shishunaga dynasty, History of India - Nanda Dynasty, History of India - Maurya dynasty, History of India - Shunga dynasty, History of India - Early Middle Kingdoms - the golden age, History of India - Satavahana Empire, History of India - Kushan Empire, History of India - Gupta dynasty, History of India - Huna invasion, History of India - Indo-Sassanians, History of India - Late Middle Kingdoms - the classical age, History of India - Harsha's empire, History of India - The Chalukyas and Pallavas, History of India - Chola empire, History of India - The Pratiharas Palas and Rashtrakutas, History of India - The Rajputs, History of India - Vijayanagar Empire, History of India - The Islamic Sultanates, History of India - Delhi Sultanate, History of India - The Mughal era, History of India - Mughal Empire, History of India - The Maratha confederacy, History of India - The Kingdom of Mysore, History of India - The Punjab, History of India - Durrani Empire, History of India - Colonial era, History of India - Company rule, History of India - The British Raj, History of India - The independence movement, History of India - Republic of India, History of India - Textbooks and surveys

Read more here: » History of India: Encyclopedia II - History of India - Early Middle Kingdoms - the golden age

Later, the Chola kingdom emerged in northern Tamil Nadu, and the Chera kingdom in Kerala. The ports of southern India were involved in the Indian Ocean trade, chiefly involving spices, with the Roman Empire to the west and Southeast Asia to the east. In the north, the first of the Rajputs, a series of kingdoms which managed to survive in some form for almost a millennium until Indian independence from the British. History of India - Harsha's empire. King Harsha of Kannauj succeeded in reuniting northern In ...

See also:

History of India, History of India - The Paleolithic era, History of India - The Neolithic era, History of India - The Bronze age, History of India - Indus Valley Civilization, History of India - Vedic civilization, History of India - The Mahajanapadas, History of India - Persian and Greek invasion, History of India - Achaemenid Empire, History of India - Alexander the Great, History of India - Greco-Buddhist period, History of India - The Magadha Empire, History of India - Shishunaga dynasty, History of India - Nanda Dynasty, History of India - Maurya dynasty, History of India - Shunga dynasty, History of India - Early Middle Kingdoms - the golden age, History of India - Satavahana Empire, History of India - Kushan Empire, History of India - Gupta dynasty, History of India - Huna invasion, History of India - Indo-Sassanians, History of India - Late Middle Kingdoms - the classical age, History of India - Harsha's empire, History of India - The Chalukyas and Pallavas, History of India - Chola empire, History of India - The Pratiharas Palas and Rashtrakutas, History of India - The Rajputs, History of India - Vijayanagar Empire, History of India - The Islamic Sultanates, History of India - Delhi Sultanate, History of India - The Mughal era, History of India - Mughal Empire, History of India - The Maratha confederacy, History of India - The Kingdom of Mysore, History of India - The Punjab, History of India - Durrani Empire, History of India - Colonial era, History of India - Company rule, History of India - The British Raj, History of India - The independence movement, History of India - Republic of India, History of India - Textbooks and surveys

Read more here: » History of India: Encyclopedia II - History of India - Late Middle Kingdoms - the classical age

Sulfur has many industrial uses. Through its major derivative, sulfuric acid (H2SO4), sulfur ranks as one of the more important elements used as an industrial raw material. It is of prime importance to every sector of the world's economies. Sulfuric acid production is the major end use for sulfur, and consumption of sulfuric acid has been regarded as one of the best indices of a nation's industrial development. More sulfuric acid is produced in the United States every y ...

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Sulfur, Sulfur - Notable characteristics, Sulfur - Applications, Sulfur - Biological role, Sulfur - Environmental Impact, Sulfur - History, Sulfur - Occurrence, Sulfur - Compounds, Sulfur - Isotopes, Sulfur - Precautions, Sulfur - Spelling

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Sulfur (Sanskrit, sulvere; Latin sulpur) was known in ancient times, and is referred to in the Biblical Pentateuch (Genesis). English translations of this commonly refer to sulfur as "brimstone", giving rise to the name of 'Fire and brimstone' sermons, which are sermons where hell and eternal damnation for sinners is stressed. It is from this part of the Bible that hell is thought to smell of sulfur. The word itself is almost certainly from the Arabic sufra meaning yellow, from the bright colo ...

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Sulfur, Sulfur - Notable characteristics, Sulfur - Applications, Sulfur - Biological role, Sulfur - Environmental Impact, Sulfur - History, Sulfur - Occurrence, Sulfur - Compounds, Sulfur - Isotopes, Sulfur - Precautions, Sulfur - Spelling

Read more here: » Sulfur: Encyclopedia II - Sulfur - History

Sulfur (Sanskrit, sulvere; Latin sulpur) was known in ancient times, and is referred to in the Biblical Pentateuch (Genesis). The word itself is almost certainly from the Arabic sufra meaning yellow, from the bright color of the naturally-occurring form. English translations of the Bible commonly refer to sulfur as "brimstone", giving rise to the name of 'Fire and brimstone' sermons, which sinners are reminded of their fate of eternal damnation It is from this part of the Bible that hell is implied to "smell of su ...

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Sulfur, Sulfur - Notable characteristics, Sulfur - Applications, Sulfur - Biological role, Sulfur - Environmental Impact, Sulfur - History, Sulfur - Occurrence, Sulfur - Compounds, Sulfur - Isotopes, Sulfur - Precautions, Sulfur - Spelling

Read more here: » Sulfur: Encyclopedia II - Sulfur - History