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122-664: The Bornadi River is in the State of Assam in India. In British India , the river separated the Kamrup district and Darrang district. It originates from the Bara/Boro/Bada River. This article related to a river in India is a stub . You can help Misplaced Pages by expanding it . Assam Assam ( / ə ˈ s æ m , æ ˈ s æ m / ə- SAM , a- SAM ; Assamese: [ɔ'xɔm] )
244-417: A perfect fourth ) and octaves . Ptolemy reviewed standard (and ancient, disused ) musical tuning practice of his day, which he then compared to his own subdivisions of the tetrachord and the octave , which he derived experimentally using a monochord / harmonic canon. The volume ends with a more speculative exposition of the relationships between harmony, the soul ( psyche ), and the planets ( harmony of
366-612: A Roman citizen, but was ethnically either a Greek or at least a Hellenized Egyptian. Astronomy was the subject to which Ptolemy devoted the most time and effort; about half of all the works that survived deal with astronomical matters, and even others such as the Geography and the Tetrabiblos have significant references to astronomy. Ptolemy's Mathēmatikē Syntaxis ( Greek : Μαθηματικὴ Σύνταξις , lit. ' Mathematical Systematic Treatise ' ), better known as
488-730: A Tai state, situated in South-Western Yunnan of China, and established his kingdom in Upper Assam . In 1253, he founded the capital city in a hillock and named it Charaideo . At the time of his advent, the area was inhabited by Morans and Borahis, to the north, to the north-east was the Chutia kingdom and to the south was the Kachari kingdom and to the west on the plains were the Baro-Bhuyans . For more than two and
610-476: A coherent mathematical description, which persists to the present as just intonation – the standard for comparison of consonance in the many other, less-than exact but more facile compromise tuning systems. During the Renaissance , Ptolemy's ideas inspired Kepler in his own musings on the harmony of the world ( Harmonice Mundi , Appendix to Book V). The Optica ( Koine Greek : Ὀπτικά ), known as
732-577: A half centuries, Sukapha and his descendants, while primarily focused on administering the kingdom, upheld their dominance in the valley through their military prowess. The reign of Suhungmung marked the first massive expansion of Ahom kingdom . Besides sending a punitive expeditions against the Nagas, they fought numerous battles with the Bhuyans, Chutias, Kacharis, Turko-Afghans, and the Naras. In 1522–23
854-402: A handful of places. Ptolemy's real innovation, however, occurs in the second part of the book, where he provides a catalogue of 8,000 localities he collected from Marinus and others, the biggest such database from antiquity. About 6 300 of these places and geographic features have assigned coordinates so that they can be placed in a grid that spanned the globe. Latitude was measured from
976-577: A huge army and fleet to invade Ahom kingdom. Here the Ahoms, lost at several places, and then captured the Ahom capital Garhgaon . During the rainy season Mir Jumla and his army suffered immeasurable hardship due to the climatic condition of the valley in addition the guerrilla fighting resorted against the invaders. And at last no noticeable gain, negotiation started and in January 1663, Treaty of Ghilajharighat
1098-498: A long exposition on the relationship between reason and sense perception in corroborating theoretical assumptions. After criticizing the approaches of his predecessors, Ptolemy argues for basing musical intervals on mathematical ratios (as opposed to the ideas advocated by followers of Aristoxenus ), backed up by empirical observation (in contrast to the excessively theoretical approach of the Pythagoreans ). Ptolemy introduces
1220-601: A method for specifying the location of the Sun in three pairs of locally oriented coordinate arcs as a function of the declination of the Sun, the terrestrial latitude, and the hour. The key to the approach is to represent the solid configuration in a plane diagram that Ptolemy calls the analemma . In another work, the Phaseis ( Risings of the Fixed Stars ), Ptolemy gave a parapegma , a star calendar or almanac , based on
1342-466: A much later pseudepigraphical composition. The identity and date of the actual author of the work, referred to now as Pseudo-Ptolemy , remains the subject of conjecture. Ptolemy wrote a work entitled Harmonikon ( Greek : Ἁρμονικόν ), known as the Harmonics , on music theory and the mathematics behind musical scales in three books. Harmonics begins with a definition of harmonic theory, with
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#17327870324871464-455: A number of army and civil administration posts such as the Borbarua and Borphukan . Jayadhwaj Singha taking the advantage of War of succession between the sons of Shah Jahan , occupied the imperial territories up to Dhaka . Aurangzeb after becoming the emperor, appointed Mir Jumla II , to recover the lost territory. After fail negotiations. In November 1661, Mir Jumla proceeded with
1586-548: A result of abundant rainfall, look green all year round. Assam receives more rainfall than most parts of India; this rain feeds the Brahmaputra River , whose tributaries and oxbow lakes provide the region with a distinctive hydro- geomorphic environment. The first dated mention of the region comes from Periplus of the Erythraean Sea (1st century) and Ptolemy 's Geographia (2nd century), which calls
1708-432: A rock cut stupa at Sri Surya Pahar has been dated to 200 BCE contemporary with rock cut Karle and Bhaja caves of Maharashtra. The site is located in a hilly terrain where several rock-cut shivalingas , votive stupas and the deities of Hindu, Buddhist and Jain pantheon are scattered. Samudragupta 's 4th-century-CE Allahabad pillar inscription mentions Kamarupa and Davaka (Central Assam) as frontier kingdoms of
1830-558: A temple at Canopus , around 146–147 AD, known as the Canobic Inscription . Although the inscription has not survived, someone in the sixth century transcribed it, and manuscript copies preserved it through the Middle Ages. It begins: "To the saviour god, Claudius Ptolemy (dedicates) the first principles and models of astronomy", following by a catalogue of numbers that define a system of celestial mechanics governing
1952-482: A thousand years or more". It was first translated from Arabic into Latin by Plato of Tivoli (Tiburtinus) in 1138, while he was in Spain. Much of the content of the Tetrabiblos was collected from earlier sources; Ptolemy's achievement was to order his material in a systematic way, showing how the subject could, in his view, be rationalized. It is, indeed, presented as the second part of the study of astronomy of which
2074-562: A view supported by the Stoics. Although mainly known for his contributions to astronomy and other scientific subjects, Ptolemy also engaged in epistemological and psychological discussions across his corpus. He wrote a short essay entitled On the Criterion and Hegemonikon ( Greek : Περὶ Κριτηρίου καὶ Ἡγεμονικοῡ ), which may have been one of his earliest works. Ptolemy deals specifically with how humans obtain scientific knowledge (i.e.,
2196-458: A water tank which may date from 1st century BCE and may be 2,000 years old. Experts speculate that another significant find at Ambari is Roman era Roman roulette pottery from the 2nd century BCE. According to a late text, Kalika Purana (c. 9th–10th century CE ), the earliest ruler of Assam was Mahiranga Danav of the Danava dynasty , which was removed by Naraka of Mithila and established
2318-488: Is a state in northeastern India , south of the eastern Himalayas along the Brahmaputra and Barak River valleys. Assam covers an area of 78,438 km (30,285 sq mi). It is the second largest state in northeastern India by area and the largest in terms of population, with more than 31 million inhabitants. The state is bordered by Bhutan and Arunachal Pradesh to the north; Nagaland and Manipur to
2440-587: Is ancestral to the modern system of constellations but, unlike the modern system, they did not cover the whole sky (only what could be seen with the naked eye in the northern hemisphere). For over a thousand years, the Almagest was the authoritative text on astronomy across Europe, the Middle East, and North Africa. The Almagest was preserved, like many extant Greek scientific works, in Arabic manuscripts;
2562-689: Is his Geographike Hyphegesis ( Greek : Γεωγραφικὴ Ὑφήγησις ; lit. ' Guide to Drawing the Earth ' ), known as the Geography , a handbook on how to draw maps using geographical coordinates for parts of the Roman world known at the time. He relied on previous work by an earlier geographer, Marinus of Tyre , as well as on gazetteers of the Roman and ancient Persian Empire . He also acknowledged ancient astronomer Hipparchus for having provided
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#17327870324872684-596: Is of Homeric form . It was common among the Macedonian upper class at the time of Alexander the Great and there were several of this name among Alexander's army, one of whom made himself pharaoh in 323 BC: Ptolemy I Soter , the first pharaoh of the Ptolemaic Kingdom . Almost all subsequent pharaohs of Egypt, with a few exceptions, were named Ptolemy until Egypt became a Roman province in 30 BC, ending
2806-646: Is the Geography , which is a thorough discussion on maps and the geographic knowledge of the Greco-Roman world . The third is the astrological treatise in which he attempted to adapt horoscopic astrology to the Aristotelian natural philosophy of his day. This is sometimes known as the Apotelesmatika ( Greek : Αποτελεσματικά , lit. ' On the Effects ' ) but more commonly known as
2928-467: The Almagest , is the only surviving comprehensive ancient treatise on astronomy. Although Babylonian astronomers had developed arithmetical techniques for calculating and predicting astronomical phenomena, these were not based on any underlying model of the heavens; early Greek astronomers, on the other hand, provided qualitative geometrical models to "save the appearances" of celestial phenomena without
3050-580: The Tetrábiblos , from the Koine Greek meaning "Four Books", or by its Latin equivalent Quadripartite . The Catholic Church promoted his work, which included the only mathematically sound geocentric model of the Solar System , and unlike most Greek mathematicians , Ptolemy's writings (foremost the Almagest ) never ceased to be copied or commented upon, both in late antiquity and in
3172-723: The Ahom kingdom where the country was greatly depopulated and unorganised. The political rivalry between the nobles made a pathway for the Burmese to invade and weakened it more and finally leading to its annexation. The discovery of Camellia sinensis in 1834 in Assam was followed by testing in 1836–37 in London. The British allowed companies to rent land from 1839 onwards. Thereafter tea plantations proliferated in Eastern Assam, where
3294-662: The Almagest was the first, concerned with the influences of the celestial bodies in the sublunary sphere . Thus explanations of a sort are provided for the astrological effects of the planets , based upon their combined effects of heating, cooling, moistening, and drying. Ptolemy dismisses other astrological practices, such as considering the numerological significance of names, that he believed to be without sound basis, and leaves out popular topics, such as electional astrology (interpreting astrological charts to determine courses of action) and medical astrology , for similar reasons. The great respect in which later astrologers held
3416-585: The Barak valley region, alongside Bengali , which is also an official language in the Barak Valley. The state has 35 districts with 5 divisions . Guwahati (containing the state capital Dispur ) is the largest city in northeastern India . Assam is known for Assam tea and Assam silk . The state was the first site for oil drilling in Asia . Assam is home to the one-horned Indian rhinoceros , along with
3538-625: The Bengal Presidency , then in 1906 it was made a part of Eastern Bengal and Assam province, and in 1912 it was reconstituted into a chief commissioners' province. In 1913, a legislative council and, in 1937, the Assam Legislative Assembly, were formed in Shillong, the erstwhile capital of the region. The British tea planters imported labour from central India adding to the demographic canvas. The Assam territory
3660-648: The Bhauma dynasty . The last of these rulers, also Naraka, was slain by Krishna . Naraka's son Bhagadatta became the king, who (it is mentioned in the Mahabharata) fought for the Kauravas in the battle of Kurukshetra with an army of kiratas , chinas and dwellers of the eastern coast. At the same time towards the east in central Assam, Asura kingdom was ruled by another line of kings. Evidence indicates presence of civilisation in Assam around 2nd century BCE,
3782-529: The Chutia kingdom was annexed and the captured tract was placed under the administration of Sadiya-Khowa-Gohain. After securing the eastern tract, Suhungmung than expanded his kingdom westwards through conquest and extended it till Marangi to the west of the Dhansiri river. When the Kacharis tried to regain the lost territory they were defeated and their capital Dimapur was sacked. Over the remaining part of
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3904-410: The Geography is likely to be of different dates, in addition to containing many scribal errors. However, although the regional and world maps in surviving manuscripts date from c. 1300 AD (after the text was rediscovered by Maximus Planudes ), there are some scholars who think that such maps go back to Ptolemy himself. Ptolemy wrote an astrological treatise, in four parts, known by
4026-527: The Gupta Empire . Davaka was later absorbed by Kamarupa, which grew into a large kingdom that spanned from Karatoya river to near present Sadiya and covered the entire Brahmaputra valley, North Bengal , parts of Bangladesh and, at times Purnea and parts of West Bengal . The kingdom was ruled by three dynasties who traced their lineage from a mleccha or Kirata Naraka; the Varmanas (c. 350–650 CE),
4148-670: The Indian National Congress against the British from the early 20th century, with Gopinath Bordoloi emerging as the preeminent nationalist leader in the Assam Congress. Bordoloi's major political rival in this time was Sir Saidullah, who was representing the Muslim League , and had the backing of the influential Muslim cleric Maulana Bhasani . The Assam Postage Circle was established by 1873 under
4270-655: The Middle Ages . However, it is likely that only a few truly mastered the mathematics necessary to understand his works, as evidenced particularly by the many abridged and watered-down introductions to Ptolemy's astronomy that were popular among the Arabs and Byzantines. His work on epicycles has come to symbolize a very complex theoretical model built in order to explain a false assumption. Ptolemy's date of birth and birthplace are both unknown. The 14th-century astronomer Theodore Meliteniotes wrote that Ptolemy's birthplace
4392-696: The Mlechchha dynasty (c.655–900 CE) and the Kamarupa-Palas (c. 900–1100 CE), from their capitals in present-day Guwahati ( Pragjyotishpura ), Tezpur ( Haruppeswara ) and North Gauhati ( Durjaya ) respectively. All three dynasties claimed descent from Narakasura . In the reign of the Varman king, Bhaskaravarman (c. 600–650 CE), the Chinese traveller Xuanzang visited the region and recorded his travels. Later, after weakening and disintegration (after
4514-572: The Mughals attacked Koch Hajo and his territory up to Barnadi River were annexed in the Mughal domain. This brought the Mughals with direct contact with Ahoms. Meanwhile, Parikshit was trying to renew his friendship with Ahoms, but got captured, and died on his way to his kingdom. Later Balinarayan , a brother of Parikshit who had taken refugee under the Ahoms was made the king of Darrang in 1615 by
4636-727: The National Democratic Front of Bodoland (NDFB). In November 1990, the Government of India deployed the Indian army , after which low-intensity military conflicts and political homicides have been continuing for more than a decade. In recent times, ethnically based militant groups have grown. The Panchayati Raj Act has been applied in Assam, after agitation of the communities due to the sluggish rate of development and general apathy of successive state governments towards Indigenous Assamese communities. Deadly floods hit
4758-788: The Optics, is a work that survives only in a somewhat poor Latin version, which, in turn, was translated from a lost Arabic version by Eugenius of Palermo ( c. 1154 ). In it, Ptolemy writes about properties of sight (not light), including reflection , refraction , and colour . The work is a significant part of the early history of optics and influenced the more famous and superior 11th-century Book of Optics by Ibn al-Haytham . Ptolemy offered explanations for many phenomena concerning illumination and colour, size, shape, movement, and binocular vision. He also divided illusions into those caused by physical or optical factors and those caused by judgmental factors. He offered an obscure explanation of
4880-463: The Tetrabiblos derived from its nature as an exposition of theory, rather than as a manual. A collection of one hundred aphorisms about astrology called the Centiloquium , ascribed to Ptolemy, was widely reproduced and commented on by Arabic, Latin, and Hebrew scholars, and often bound together in medieval manuscripts after the Tetrabiblos as a kind of summation. It is now believed to be
5002-461: The equator , as it is today, but Ptolemy preferred to express it as climata , the length of the longest day rather than degrees of arc : The length of the midsummer day increases from 12h to 24h as one goes from the equator to the polar circle . One of the places Ptolemy noted specific coordinates for was the now-lost stone tower which marked the midpoint on the ancient Silk Road , and which scholars have been trying to locate ever since. In
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5124-530: The gharial , a critically endangered fish-eating crocodilian, and the pink-headed duck (which may be extinct worldwide). For the state bird, the white-winged wood duck, Assam is a globally important area. In addition to the above, there are three other National Parks in Assam namely Dibru Saikhowa National Park, Nameri National Park and the Orang National Park. Assam has conserved the one-horned Indian rhinoceros from near extinction, along with
5246-519: The harmonic canon (Greek name) or monochord (Latin name), which is an experimental musical apparatus that he used to measure relative pitches, and used to describe to his readers how to demonstrate the relations discussed in the following chapters for themselves. After the early exposition on to build and use monochord to test proposed tuning systems, Ptolemy proceeds to discuss Pythagorean tuning (and how to demonstrate that their idealized musical scale fails in practice). The Pythagoreans believed that
5368-501: The pygmy hog , tiger and numerous species of birds, and it provides one of the last wild habitats for the Asian elephant . Kaziranga and Manas are both World Heritage Sites . The state contains Sal tree forests and forest products, much depleted from earlier times. A land of high rainfall, Assam displays greenery. The Brahmaputra River tributaries and oxbow lakes provide the region with hydro- geomorphic environment. The state has
5490-413: The wild water buffalo , pygmy hog , tiger and various species of Asiatic birds, and provides one of the last wild habitats for the Asian elephant . The Assamese economy is aided by wildlife tourism to Kaziranga National Park and Manas National Park , which are World Heritage Sites . Dibru-Saikhowa National Park is famed for its feral horses . Sal tree forests are found in the state which, as
5612-430: The "criterion" of truth), as well as with the nature and structure of the human psyche or soul, particularly its ruling faculty (i.e., the hegemonikon ). Ptolemy argues that, to arrive at the truth, one should use both reason and sense perception in ways that complement each other. On the Criterion is also noteworthy for being the only one of Ptolemy's works that is devoid of mathematics . Elsewhere, Ptolemy affirms
5734-435: The 1850s, the industry started seeing some profits. The industry saw initial growth, when in 1861, investors were allowed to own land in Assam and it saw substantial progress with the invention of new technologies and machinery for preparing processed tea during the 1870s. Despite the commercial success, tea labourers continued to be exploited, working and living under poor conditions. Fearful of greater government interference,
5856-626: The Ahom king Pratap Singha . From 1616, onwards many battles were fought the Mughal without any tangible result, with the first Battle of Samdhara till after the last battle where the treaty was concluded in 1639 which fixed the Asurar ali on the south bank and the Barnadi on the north bank of the Brahmaputra as the boundary between the two. Pratap Singha had also enacted the Paik system and created
5978-601: The Ahom kingdom, the Chutia regions were annexed, and by around 1536, the Kacharis were confined to the areas of Cachar and North Cachar. At this point, they became more of an ally to the Ahoms than a rival force. The Ahoms , a Tai group, ruled Upper Assam for almost 600 years. In the year 1228 the Tai-Ahoms came to the Brahmaputra Valley under the leadership of Sukapha along with 9,000 men from Mong Mao ,
6100-494: The Ahoms achieved no notable military achievement. During this period from, Siva Singha to Rajeswar Singha , the kingdom witnessed peace and prosperity and was significant for constructive activities and other development. In the field of religion also, Ekasarana Dharma spread all over the kingdom and started to influence all aspects of people's life. The religious heads of Vaisnavite monastery exalted great influence with royal patronage and established numerous Satras and most of
6222-522: The Assam Geologic Province. The region is prone to natural disasters like annual floods and frequent mild earthquakes. Strong earthquakes were recorded in 1869, 1897 , and 1950 . The total population of Assam was 26.66 million with 4.91 million households in 2001. Higher population concentration was recorded in the districts of Kamrup , Nagaon , Sonitpur , Barpeta , Dhubri , Darrang , and Cachar . Assam's population
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#17327870324876344-589: The Barak valley) is the second most populous city in Assam and an important centre of business. Other large cities include Dibrugarh , an oil and natural gas industry centre, With the tropical monsoon climate , Assam is temperate (summer max. at 95–100 °F or 35–38 °C and winter min. at 43–46 °F or 6–8 °C) and experiences heavy rainfall and high humidity. The climate is characterised by heavy monsoon downpours reducing summer temperatures and affecting foggy nights and mornings in winters, frequent during
6466-456: The British gradually annexed the entire region. Thereafter the court language and medium of instruction in educational institutions of Assam was made Bengali , instead of Assamese. Starting from 1836 until 1873, this imposition of a foreign tongue created greater unemployment among the People of Assam and Assamese literature naturally suffered in its growth. Initially, Assam was made a part of
6588-534: The Chief Commissioner. With the partition of India in 1947, Assam became a constituent state of India. The Sylhet District of Assam (excluding the Karimganj subdivision) was given up to East Pakistan, which later became Bangladesh. The government of India, which has the unilateral powers to change the borders of a state, divided Assam into several states beginning in 1970 within the borders of what
6710-436: The French astronomer Delambre in the early 1800s which were repeated by R.R. Newton. Specifically, it proved Hipparchus was not the sole source of Ptolemy's catalog, as they both had claimed, and proved that Ptolemy did not simply copy Hipparchus' measurements and adjust them to account for precession of the equinoxes, as they had claimed. Scientists analyzing the charts concluded: It also confirms that Ptolemy’s Star Catalogue
6832-425: The Greek term Tetrabiblos (lit. "Four Books") or by its Latin equivalent Quadripartitum . Its original title is unknown, but may have been a term found in some Greek manuscripts, Apotelesmatiká ( biblía ), roughly meaning "(books) on the Effects" or "Outcomes", or "Prognostics". As a source of reference, the Tetrabiblos is said to have "enjoyed almost the authority of a Bible among the astrological writers of
6954-490: The Kachari and Jaintia kingdoms, and had captured their kings and forced to accept Ahom suzerainty and agreed them to pay annual tribute. Other than that, several expeditions were sent against the Miris, the Daflas, the Naga Mishmis and the Nagas of Namsung, Dayang and the Rengma Nagas during late 17th century and early 18th century. Rudra Singha had made extensive preparations for his invasion of Bengal but remained unfulfilled due to his sudden death in 1714. After Rudra Singha ,
7076-401: The Kachari kingdom, a new king Detsung was placed as a tributary, but Detsung proved disloyal and revolted against the Ahoms. He was subsequently executed. A new dependent king was set up on the Kachari throne with the name of Nirbhaynarayan. Since then the Kachari kings were regarded as 'thapita sanchita' meaning - established and maintained by the Ahom rulers. Suhungmung's reign also witnessed
7198-500: The Kamarupa-Palas), the Kamarupa tradition was extended to c. 1255 CE by the Lunar I (c. 1120–1185 CE) and Lunar II (c. 1155–1255 CE) dynasties. The Medieval Assam history may have started with the advent of Ahoms in the early part of the 13th century and covers their entire rule of 600 years till 1826. The medieval history of Assam is especially known for its conflict with Muslim powers under Turko-Afghan and Mughals , finally resulting in Assamese victory, however, this military glory
7320-444: The Macedonian family's rule. The name Claudius is a Roman name, belonging to the gens Claudia ; the peculiar multipart form of the whole name Claudius Ptolemaeus is a Roman custom, characteristic of Roman citizens. This indicates that Ptolemy would have been a Roman citizen . Gerald Toomer, the translator of Ptolemy's Almagest into English, suggests that citizenship was probably granted to one of Ptolemy's ancestors by either
7442-429: The South Indian Plateau system. In the south, the Barak originating in the Barail Range (Assam-Nagaland border) flows through the Cachar district with a 25–30 miles (40–50 km) wide valley and enters Bangladesh with the name Surma River . Urban centres include Guwahati , one of the 100 fastest growing cities in the world. Guwahati is also referred to as the "Gateway to the North-East India". Silchar , (in
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#17327870324877564-455: The Sun or Moon illusion (the enlarged apparent size on the horizon) based on the difficulty of looking upwards. The work is divided into three major sections. The first section (Book II) deals with direct vision from first principles and ends with a discussion of binocular vision. The second section (Books III-IV) treats reflection in plane, convex, concave, and compound mirrors. The last section (Book V) deals with refraction and includes
7686-422: The ability to make any predictions. The earliest person who attempted to merge these two approaches was Hipparchus , who produced geometric models that not only reflected the arrangement of the planets and stars but could be used to calculate celestial motions. Ptolemy, following Hipparchus, derived each of his geometrical models for the Sun, Moon, and the planets from selected astronomical observations done in
7808-462: The accession of Gadadhar Singha , fought the final Battle of Itakhuli where the Mughals were badly defeated. And the since then the border was fixed at Manah on the north bank and the Nagarbera hill on the south bank of the Brahmaputra till its annexation by the East India Company in 1826. Rudra Singha succeeded Gadadhar Singha , his reign is notable because of his military achievements and his socio-culture contributions. He had both subjugated
7930-596: The afternoons. Spring (March–April) and autumn (September–October) are usually pleasant with moderate rainfall and temperature. Assam's agriculture usually depends on the south-west monsoon rains. Every year, rivers like the Brahmaputra and Barak overflow due to heavy rainfall, causing widespread flooding across Assam. The rising water levels submerge nearby areas, washing away houses, livestock, and damaging infrastructure such as bridges, railway tracks, and roads, leading to communication breakdowns in many regions. This natural disaster also results in numerous fatalities throughout
8052-423: The appearances and disappearances of stars over the course of the solar year. The Planisphaerium ( Greek : Ἅπλωσις ἐπιφανείας σφαίρας , lit. ' Flattening of the sphere ' ) contains 16 propositions dealing with the projection of the celestial circles onto a plane. The text is lost in Greek (except for a fragment) and survives in Arabic and Latin only. Ptolemy also erected an inscription in
8174-868: The bank of the Brahmaputra River , and the Manas Wildlife Sanctuary , near the border with Bhutan. The Kaziranga is a refuge for the fast-disappearing Indian one-horned rhinoceros. The state is the last refuge for numerous other endangered and threatened species including the white-winged wood duck or deohanh , Bengal florican , black-breasted parrotbill , red-headed vulture , white-rumped vulture , greater adjutant , Jerdon's babbler , rufous-necked hornbill , Bengal tiger , Asian elephant , pygmy hog , gaur , wild water buffalo , Indian hog deer , hoolock gibbon , golden langur , capped langur , barasingha , Ganges river dolphin , Barca snakehead , Ganges shark , Burmese python , brahminy river turtle , black pond turtle , Asian forest tortoise , and Assam roofed turtle . Threatened species that are extinct in Assam include
8296-403: The book on astrology and attributed it to Ptolemy". Historical confusion on this point can be inferred from Abu Ma'shar's subsequent remark: "It is sometimes said that the very learned man who wrote the book of astrology also wrote the book of the Almagest . The correct answer is not known." Not much positive evidence is known on the subject of Ptolemy's ancestry, apart from what can be drawn from
8418-458: The data needed to compute the positions of the Sun, Moon and planets, the rising and setting of the stars, and eclipses of the Sun and Moon, making it a useful tool for astronomers and astrologers. The tables themselves are known through Theon of Alexandria 's version. Although Ptolemy's Handy Tables do not survive as such in Arabic or in Latin, they represent the prototype of most Arabic and Latin astronomical tables or zījes . Additionally,
8540-626: The details of his name, although modern scholars have concluded that Abu Ma'shar's account is erroneous. It is no longer doubted that the astronomer who wrote the Almagest also wrote the Tetrabiblos as its astrological counterpart. In later Arabic sources, he was often known as "the Upper Egyptian ", suggesting he may have had origins in southern Egypt . Arabic astronomers , geographers , and physicists referred to his name in Arabic as Baṭlumyus ( Arabic : بَطْلُمْيوس ). Ptolemy wrote in Koine Greek , and can be shown to have used Babylonian astronomical data . He might have been
8662-402: The earliest surviving table of refraction from air to water, for which the values (with the exception of the 60° angle of incidence) show signs of being obtained from an arithmetic progression. However, according to Mark Smith, Ptolemy's table was based in part on real experiments. Ptolemy's theory of vision consisted of rays (or flux) coming from the eye forming a cone, the vertex being within
8784-584: The east; Meghalaya , Tripura , Mizoram and Bangladesh to the south; and West Bengal to the west via the Siliguri Corridor , a 22-kilometre-wide (14 mi) strip of land that connects the state to the rest of India. Assamese and Bodo are two of the official languages for the entire state and Meitei ( Manipuri ) is recognised as an additional official language in three districts of Barak Valley and Hojai district . in Hojai district and for
8906-469: The elevation of the north celestial pole for a few cities. Although maps based on scientific principles had been made since the time of Eratosthenes ( c. 276 – c. 195 BC ), Ptolemy improved on map projections . The first part of the Geography is a discussion of the data and of the methods he used. Ptolemy notes the supremacy of astronomical data over land measurements or travelers' reports, though he possessed these data for only
9028-553: The emperor Claudius or the emperor Nero . The 9th century Persian astronomer Abu Ma'shar al-Balkhi mistakenly presents Ptolemy as a member of Ptolemaic Egypt's royal lineage , stating that the descendants of the Alexandrine general and Pharaoh Ptolemy I Soter were wise "and included Ptolemy the Wise, who composed the book of the Almagest ". Abu Ma'shar recorded a belief that a different member of this royal line "composed
9150-425: The empirical musical relations he identified by testing pitches against each other: He was able to accurately measure relative pitches based on the ratios of vibrating lengths two separate sides of the same single string , hence which were assured to be under equal tension, eliminating one source of error. He analyzed the empirically determined ratios of "pleasant" pairs of pitches, and then synthesised all of them into
9272-813: The entire Brahmaputra valley , was called Assam (e.g. Mughals used Asham ); and the British province too was called Assam. Though the precise etymology of Assam is not clear, the name Assam is associated with the Ahom people , originally called Shyam ( Shan ). Assam and adjoining regions have evidences of human settlement from the beginning of the Stone Age . The hills at the height of 1,500 to 2,000 feet (460–615 m) were popular habitats probably due to availability of exposed dolerite basalt, useful for tool-making. Ambari site in Guwahati has revealed Shunga - Kushana era artefacts including flight of stairs and
9394-615: The estimated 1,314 orchid species found in India. Assam has petroleum , natural gas, coal, limestone and other minor minerals such as magnetic quartzite , kaolin , sillimanites , clay and feldspar . A small quantity of iron ore is available in western districts. Discovered in 1889, all the major petroleum-gas reserves are in Upper parts. A recent USGS estimate shows 399 million barrels (63,400,000 m ) of oil, 1,178 billion cubic feet (3.34 × 10 m ) of gas and 67 million barrels (10,700,000 m ) of natural gas liquids in
9516-419: The eye, and the base defining the visual field. The rays were sensitive, and conveyed information back to the observer's intellect about the distance and orientation of surfaces. Size and shape were determined by the visual angle subtended at the eye combined with perceived distance and orientation. This was one of the early statements of size-distance invariance as a cause of perceptual size and shape constancy,
9638-434: The first Muslim-invasions of the kingdom. After a series of battle, the invaders were roundly defeated and were chased up to Karatoya River . The Sultan of Bengal, terrified by the approaching army of Suhungmung, made peace by offering his two daughters and five paraganas, along with other articles as dowry to the king. The rising Koch king Biswa Singha also offered his submission, and the Ahom general Ton-Kham granted him all
9760-677: The fragmentation of Assam. In 1961, the government of Assam passed legislation making use of the Assamese language compulsory. It was withdrawn later under pressure from Bengali speaking people in Cachar . In the 1980s the Brahmaputra valley saw a six-year Assam Agitation triggered by the discovery of a sudden rise in registered voters on electoral rolls. It tried to force the government to identify and deport foreigners illegally migrating from neighbouring Bangladesh and to provide constitutional, legislative, administrative and cultural safeguards for
9882-621: The headship of the Deputy Post Master General. At the turn of the 20th century, British India consisted of eight provinces that were administered either by a governor or a lieutenant-governor. Assam Province was one among the major eight provinces of British India. The table below shows the major original provinces during British India covering the Assam Province under the Administrative Office of
10004-553: The history of science". One striking error noted by Newton was an autumn equinox said to have been observed by Ptolemy and "measured with the greatest care" at 2pm on 25 September 132, when the equinox should have been observed around 9:55am the day prior. In attempting to disprove Newton, Herbert Lewis also found himself agreeing that "Ptolemy was an outrageous fraud," and that "all those result capable of statistical analysis point beyond question towards fraud and against accidental error". The charges laid by Newton and others have been
10126-546: The indigenous Assamese majority, which they felt was under threat due to the increase of migration from Bangladesh. The agitation ended after an accord (Assam Accord 1985) between its leaders and the Union Government, which remained unimplemented, causing simmering discontent. The post 1970s experienced the growth of armed separatist groups such as the United Liberation Front of Asom (ULFA) and
10248-616: The introduction to the Handy Tables survived separately from the tables themselves (apparently part of a gathering of some of Ptolemy's shorter writings) under the title Arrangement and Calculation of the Handy Tables . The Planetary Hypotheses ( Greek : Ὑποθέσεις τῶν πλανωμένων , lit. ' Hypotheses of the Planets ' ) is a cosmological work, probably one of the last written by Ptolemy, in two books dealing with
10370-556: The largest population of the wild water buffalo in the world. The state has the highest diversity of birds in India with around 820 species. With subspecies the number is as high as 946. The mammal diversity in the state is around 190 species. Assam is remarkably rich in Orchid species and the Foxtail orchid is the state flower of Assam. The recently established Kaziranga National Orchid and Biodiversity Park boasts more than 500 of
10492-684: The life-line of Assam, is an antecedent river older than the Himalayas, which has entrenched itself since they started rising. The river with steep gorges and rapids in Arunachal Pradesh entering Assam, becomes a braided river (at times 10 mi/16 km wide) and with tributaries, creates a flood plain (Brahmaputra Valley: 50–60 mi/80–100 km wide, 600 mi/1000 km long). The hills of Karbi Anglong , North Cachar and those in and close to Guwahati (also Khasi-Garo Hills) now eroded and dissected are originally parts of
10614-499: The lost territory. After numerous battles, finally after the Battle of Saraighat the Mughals were forced to retreat. The period after 1671 was very unstable due to the rivalry among the nobles, who wanted to arrest their own political power and influence by placing their own choice of prince in the throne. In 1679, Laluksola Borphukan , in hopes of becoming king with the help of Mughals, surrendered Guwahati without any battle. But after
10736-500: The mathematics of music should be based on only the one specific ratio of 3:2, the perfect fifth , and believed that tunings mathematically exact to their system would prove to be melodious, if only the extremely large numbers involved could be calculated (by hand). To the contrary, Ptolemy believed that musical scales and tunings should in general involve multiple different ratios arranged to fit together evenly into smaller tetrachords (combinations of four pitch ratios which together make
10858-618: The modern title is thought to be an Arabic corruption of the Greek name Hē Megistē Syntaxis (lit. "The greatest treatise"), as the work was presumably known in Late Antiquity . Because of its reputation, it was widely sought and translated twice into Latin in the 12th century , once in Sicily and again in Spain. Ptolemy's planetary models, like those of the majority of his predecessors, were geocentric and almost universally accepted until
10980-477: The motions of the Sun, Moon, planets, and stars. In 2023, archaeologists were able to read a manuscript which gives instructions for the construction of an astronomical tool called a meteoroscope ( μετεωροσκόπιον or μετεωροσκοπεῖον ). The text, which comes from an eighth-century manuscript which also contains Ptolemy's Analemma , was identified on the basis of both its content and linguistic analysis as being by Ptolemy. Ptolemy's second most well-known work
11102-554: The name of Meghalaya. In 1972, Arunachal Pradesh (the North East Frontier Agency ) and Mizoram (from the Mizo Hills in the south) were separated from Assam as union territories; both became states in 1986. Since the restructuring of Assam after independence, communal tensions and violence remain. Separatist groups began forming along ethnic lines, and demands for autonomy and sovereignty grew, resulting in
11224-461: The observations were taken at 12:30pm. The overall quality of Ptolemy's observations has been challenged by several modern scientists, but prominently by Robert R. Newton in his 1977 book The Crime of Claudius Ptolemy , which asserted that Ptolemy fabricated many of his observations to fit his theories. Newton accused Ptolemy of systematically inventing data or doctoring the data of earlier astronomers, and labelled him "the most successful fraud in
11346-458: The people became their disciples. So got the Ahom court greatly came under the influence of Sakta Brahman priests and astrologers. The religious policies concluded by Phuleshwari and the persecutions of unfavored Satras, embroiled the situation more along with the pressure of Paik system in the 18th century. This finally resulted in the Moamoria rebellion (1769–1805), which greatly weakened
11468-401: The radius of the sphere of the fixed stars was 20 000 times the radius of the Earth. The work is also notable for having descriptions on how to build instruments to depict the planets and their movements from a geocentric perspective, much as an orrery would have done for a heliocentric one, presumably for didactic purposes. The Analemma is a short treatise where Ptolemy provides
11590-486: The reappearance of heliocentric models during the scientific revolution . Under the scrutiny of modern scholarship, and the cross-checking of observations contained in the Almagest against figures produced through backwards extrapolation, various patterns of errors have emerged within the work. A prominent miscalculation is Ptolemy's use of measurements that he claimed were taken at noon, but which systematically produce readings now shown to be off by half an hour, as if
11712-517: The region Kirrhadia , apparently after the Kirata population. In the classical period and up to the 12th century, the region east of the Karatoya river , largely congruent to present-day Assam, was called Kamarupa , and alternatively, Pragjyotisha . Though a western portion of Assam as a region continued to be called Kamrup , the Ahom kingdom that emerged in the east, and which came to dominate
11834-405: The secondary literature, while noting that issues with the accuracy of Ptolemy's observations had long been known. Other authors have pointed out that instrument warping or atmospheric refraction may also explain some of Ptolemy's observations at a wrong time. In 2022 the first Greek fragments of Hipparchus' lost star catalog were discovered in a palimpsest and they debunked accusations made by
11956-495: The soil and the climate were most suitable. Problems with the imported Han Chinese labourers from China and hostility from native Assamese resulted in the migration of forced labourers from central and eastern parts of India. After initial trial and error with planting the Chinese and the Assamese-Chinese hybrid varieties, the planters later accepted the local Camellia assamica as the most suitable variety for Assam. By
12078-474: The spanning of more than 800 years; however, many astronomers have for centuries suspected that some of his models' parameters were adopted independently of observations. Ptolemy presented his astronomical models alongside convenient tables, which could be used to compute the future or past position of the planets. The Almagest also contains a star catalogue , which is a version of a catalogue created by Hipparchus . Its list of forty-eight constellations
12200-451: The spheres ). Although Ptolemy's Harmonics never had the influence of his Almagest or Geography , it is nonetheless a well-structured treatise and contains more methodological reflections than any other of his writings. In particular, it is a nascent form of what in the following millennium developed into the scientific method, with specific descriptions of the experimental apparatus that he built and used to test musical conjectures, and
12322-411: The state in 2020 and 2022 . A significant geographical aspect of Assam is that it contains three of six physiographic divisions of India – The Northern Himalayas (Eastern Hills), The Northern Plains (Brahmaputra plain) and Deccan Plateau (Karbi Anglong). As the Brahmaputra flows in Assam the climate here is cold and there is rainfall most of the month. Geomorphic studies conclude that the Brahmaputra,
12444-488: The state. Assam is one of the richest biodiversity zones in the world and consists of tropical rainforests , deciduous forests, riverine grasslands , bamboo orchards and numerous wetland ecosystems; Many are now protected as national parks and reserved forests. Assam has wildlife sanctuaries, the most prominent of which are two UNESCO World Heritage Sites -the Kaziranga National Park , on
12566-440: The structure of the universe and the laws that govern celestial motion . Ptolemy goes beyond the mathematical models of the Almagest to present a physical realization of the universe as a set of nested spheres, in which he used the epicycles of his planetary model to compute the dimensions of the universe. He estimated the Sun was at an average distance of 1 210 Earth radii (now known to actually be ~23 450 radii), while
12688-517: The subject of wide discussions and received significant push back from other scholars against the findings. Owen Gingerich , while agreeing that the Almagest contains "some remarkably fishy numbers", including in the matter of the 30-hour displaced equinox, which he noted aligned perfectly with predictions made by Hipparchus 278 years earlier, rejected the qualification of fraud. Objections were also raised by Bernard Goldstein , who questioned Newton's findings and suggested that he had misunderstood
12810-501: The supremacy of mathematical knowledge over other forms of knowledge. Like Aristotle before him, Ptolemy classifies mathematics as a type of theoretical philosophy; however, Ptolemy believes mathematics to be superior to theology or metaphysics because the latter are conjectural while only the former can secure certain knowledge. This view is contrary to the Platonic and Aristotelian traditions, where theology or metaphysics occupied
12932-508: The tea growers formed the Indian Tea Association in 1888 to lobby to retain the status quo. The organisation was successful in this, but even after India's independence, conditions of the labourers have improved very little. In the later part of the 18th century, religious tensions and atrocities by the nobles led to the Moamoria rebellion (1769–1805), resulting in tremendous casualties of lives and property. The rebellion
13054-522: The territories that were received as dowry from the Sultan of Bengal on the condition of annual tribute. The successors of Suhungmung, Suklenmung and Sukhaamphaa , sent many expeditions against the Bhuyans and Nagas. But were significant with the wars with the Koch. During the reign of Sukhaamphaa , the Ahoms lost to a Koch army led by Chilarai and the Ahoms had to accept Koch supremacy and had to give up
13176-587: The third part of the Geography , Ptolemy gives instructions on how to create maps both of the whole inhabited world ( oikoumenē ) and of the Roman provinces, including the necessary topographic lists, and captions for the maps. His oikoumenē spanned 180 degrees of longitude from the Blessed Islands in the Atlantic Ocean to the middle of China , and about 80 degrees of latitude from Shetland to anti-Meroe (east coast of Africa ); Ptolemy
13298-500: The tracts of north of Brahmaputra. However, the lost tract was soon recovered with further military expeditions. Soon after the death of Nara Narayan his kingdom, got divided between the sons of Nara Narayan and Chilarai as Koch Hajo and Koch Bihar . In 1609, Laxmi Narayan king of Cooch Behar accepted the vassalage of Mughals , and the Koch Hajo king Raghudev and later his son Parikshit sought assistance from Ahoms. In 1612,
13420-527: The year 1524. The rivalry between the Chutias and Ahoms for the supremacy of eastern Assam led to a series of conflicts between them from the early 16th century. The Dimasa, a Bodo-Kachari dynasty that ruled from the 13th century until 1854, controlled territories stretching from the Dikhow River to central and southern Assam, with their capital at Dimapur. By the early 17th century, with the expansion of
13542-466: Was Ptolemais Hermiou , a Greek city in the Thebaid region of Egypt (now El Mansha, Sohag Governorate ). This attestation is quite late, however, and there is no evidence to support it. It is known that Ptolemy lived in or around the city of Alexandria , in the Roman province of Egypt under Roman rule . He had a Latin name, Claudius, which is generally taken to imply he was a Roman citizen . He
13664-431: Was an Alexandrian mathematician , astronomer , astrologer , geographer , and music theorist who wrote about a dozen scientific treatises , three of which were important to later Byzantine , Islamic , and Western European science. The first was his astronomical treatise now known as the Almagest , originally entitled Mathematical Treatise ( Greek : Μαθηματικὴ Σύνταξις , Mathēmatikḗ Syntaxis ). The second
13786-650: Was concluded. According to the treaty, the Ahoms had to acknowledging Mughal supremacy, ceded the territory west of the Bharali on the north bank and the Kalang on the south bank along with a huge amount of war indemnity and handing over the sons of the Gohains as hostage and two Ahom princesses to the Mughal harem. Soon after the departure of Mir Jumla , Jayadhwaj Singha died and the new king Chakradhwaj Singha began preparations to overthrow Mughal supremacy and to recover
13908-856: Was defeated after fierce resistance, which led to the Burmese occupation of Assam. A reign of terror was unleashed by the Burmese on the Assamese people, who fled to neighbouring kingdoms and British-ruled Bengal . The Burmese reached the East India Company 's borders, and the First Anglo-Burmese War ensued in 1824. The war ended under the Treaty of Yandabo in 1826, with the Company taking control of Western Assam and installing Purandar Singha as king of Upper Assam in 1833. The arrangement lasted until 1838 and thereafter
14030-619: Was estimated at 28.67 million in 2006 and at 30.57 million in 2011 and is expected to reach 34.18 million by 2021 and 35.60 million by 2026. As per the 2011 census, the total population of Assam was 31,169,272. The total population of the state has increased from 26,638,407 to 31,169,272 in the last ten years with a growth rate of 16.93%. Ptolemy This is an accepted version of this page Claudius Ptolemy ( / ˈ t ɒ l ə m i / ; ‹See Tfd› Greek : Πτολεμαῖος , Ptolemaios ; Latin : Claudius Ptolemaeus ; c. 100 – c. 170 AD)
14152-628: Was familiar with Greek philosophers and used Babylonian observations and Babylonian lunar theory. In half of his extant works, Ptolemy addresses a certain Syrus, a figure of whom almost nothing is known but who likely shared some of Ptolemy's astronomical interests. Ptolemy died in Alexandria c. 168 . Ptolemy's Greek name , Ptolemaeus ( Πτολεμαῖος , Ptolemaîos ), is an ancient Greek personal name . It occurs once in Greek mythology and
14274-545: Was first separated from Bengal in 1874 as the 'North-East Frontier' non-regulation province , also known as the Assam Chief-Commissionership. It was incorporated into the new province of Eastern Bengal and Assam in 1905 after the partition of Bengal (1905–1911) and re-established in 1912 as Assam Province . After a few initially unsuccessful attempts to gain independence for Assam during the 1850s, anti-colonial Assamese joined and actively supported
14396-464: Was not based solely on data from Hipparchus’ Catalogue. ... These observations are consistent with the view that Ptolemy composed his star catalogue by combining various sources, including Hipparchus’ catalogue, his own observations and, possibly, those of other authors. The Handy Tables ( Greek : Πρόχειροι κανόνες ) are a set of astronomical tables, together with canons for their use. To facilitate astronomical calculations, Ptolemy tabulated all
14518-458: Was shattered in the early 19th century when it failed to resist the Burmese invasions , which led to its annexation. Chutia , a Bodo-Kachari group by origin, held the regions on both the banks of Brahmaputra with its domain in the area eastwards from Vishwanath (north bank) and Buridihing (south bank), in Upper Assam and in the state of Arunachal Pradesh . It was annexed by the Ahoms in
14640-471: Was suppressed but the kingdom was severely weakened by the civil war. Political rivalry between Prime Minister Purnananda Burhagohain and Badan Chandra Borphukan , the Ahom Viceroy of Western Assam, led to an invitation to the Burmese by the latter, in turn leading to three successive Burmese invasions of Assam . The reigning monarch Chandrakanta Singha tried to check the Burmese invaders but he
14762-655: Was then Assam. In 1963, the Naga Hills district became the 16th state of India under the name of Nagaland . Part of Tuensang was added to Nagaland. In 1970, in response to the demands of the Khasi, Jaintia and Garo people of the Meghalaya Plateau , the districts containing the Khasi Hills, Jaintia Hills, and Garo Hills were formed into an autonomous state within Assam; in 1972 this became a separate state under
14884-506: Was well aware that he knew about only a quarter of the globe, and an erroneous extension of China southward suggests his sources did not reach all the way to the Pacific Ocean. It seems likely that the topographical tables in the second part of the work (Books 2–7) are cumulative texts, which were altered as new knowledge became available in the centuries after Ptolemy. This means that information contained in different parts of
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