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Pancheti Koteswaram
Pancheti Koteswaram (25 March 1915 – 11 January 1997) was an Indian meteorologist, hydrologist, atmospheric physicist and the Director-General of Observatories of Government of India. He was a professor at University of Chicago, University of Hawaii, University of Miami and Tehran University and served as a research associate at National Hurricane Research Laboratory, Miami, and the National Centre for Atmospheric Research, Colorado. A former vice-president of World Meteorological Organization (WMO), Geneva, he was an elected Fellow of the Indian Academy of Sciences, Indian National Science Academy and the Andhra Pradesh Academy of Sciences. The Government of India awarded him the third highest civilian honour of the Padma Bhushan, in 1975, for his contributions to science. Biography Pancheti Koteswaram was born on 25 March 1915 in Nellore, a coastal Andhra Pradesh town, to Pancheti Subbarayulu Davar and Venkatasubbamma but lost his father before he turned one and was bro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nellore
Nellore is a city located on the banks of Penna River, in Nellore district of the Indian state of Andhra Pradesh. It serves as the headquarters of the district, as well as Nellore mandal and Nellore revenue division. It is the fourth most populous city in the state. It is at a distance of 700 km from Visakhapatnam and about 170 km north of Chennai, Tamil Nadu and also about 380 km east-northeast of Bangalore, Karnataka. Etymology There are various theories linked to the origin of the name "Nellore". A mythological story from Sthala Purana depicts, a lingam in the form of a stone under '' nelli tree'' ("''Nelli''" stands for ''emblica Tree'' in Tamil). The place gradually became ''Nelli-ooru'' (''ooru'' generally stands for place in Telugu) and then to present day ''Nellore''. Another explanation is that the town got its name from the extensive cultivation of paddy in and around it (''"Nell"'' meaning ''paddy'' in Telugu). The ''Gazetteer of the Nellore Distric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Presidency College, Chennai
Presidency College is an art, commerce, and science college in the city of Chennai in Tamil Nadu, India. On 16 October 1840, this school was established as the Madras Preparatory School before being repurposed as a high school, and then a graduate college. The Presidency College is one of the oldest government arts colleges in India. It is one of two Presidency Colleges established by the British in India, the other being the Presidency College, Kolkata. History Sir Thomas Munro asked for a Committee of Public Instruction to form in 1826. In 1836, the committee's duties changed to the "Committee of Native Education". The plans drawn up by the committee did not commend themselves to the Governor of Madras, Lord Elphinstone, who proposed nineteen resolutions that passed unanimously. Elphinstone chose E. B. Powell, a University of Cambridge Wrangler in mathematics, to be the first principal, and Powell accepted the post. He arrived in Mumbai (Bombay) on September 20, 1840, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropical Cyclones
A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls. Depending on its location and strength, a tropical cyclone is referred to by different names, including hurricane (), typhoon (), tropical storm, cyclonic storm, tropical depression, or simply cyclone. A hurricane is a strong tropical cyclone that occurs in the Atlantic Ocean or northeastern Pacific Ocean, and a typhoon occurs in the northwestern Pacific Ocean. In the Indian Ocean, South Pacific, or (rarely) South Atlantic, comparable storms are referred to simply as "tropical cyclones", and such storms in the Indian Ocean can also be called "severe cyclonic storms". "Tropical" refers to the geographical origin of these systems, which form almost exclusively over tropical seas. "Cyclone" refers to their winds moving in a circle, whirling r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Normand
Sir Charles William Blyth Normand CIE (10 September 1889 – 25 October 1982) was a Scottish meteorologist. Career Born in Edinburgh, Normand was educated at the Royal High School and studied mathematics, physics and chemistry at Edinburgh University. In 1913, he was appointed Imperial Meteorologist in India. During the First World War, he served as a meteorological officer with the Indian Army in Mesopotamia. On his return to India he conducted research into atmospheric humidity, and became Director-General of Observatories in India in 1927. He was a member of the Indian Science Congress and a founder of the Indian Academy of Sciences. He was knighted in 1945. In 1946, Normand moved to Oxford, where he studied atmospheric ozone. He served as Secretary of the International Ozone Commission from 1948 to 1959 and President of the Royal Meteorological Society between 1951 and 1953, receiving their Symons Gold Medal The Symons Gold Medal is awarded biennially by the Royal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bengal
Bengal ( ; bn, বাংলা/বঙ্গ, translit=Bānglā/Bôngô, ) is a geopolitical, cultural and historical region in South Asia, specifically in the eastern part of the Indian subcontinent at the apex of the Bay of Bengal, predominantly covering present-day Bangladesh and the Indian state of West Bengal. Geographically, it consists of the Ganges-Brahmaputra delta system, the largest river delta in the world and a section of the Himalayas up to Nepal and Bhutan. Dense woodlands, including hilly rainforests, cover Bengal's northern and eastern areas, while an elevated forested plateau covers its central area; the highest point is at Sandakphu. In the littoral southwest are the Sundarbans, the world's largest mangrove forest. The region has a monsoon climate, which the Bengali calendar divides into six seasons. Bengal, then known as Gangaridai, was a leading power in ancient South Asia, with extensive trade networks forming connections to as far away as Roman Egypt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norwesters
Nor'westers or the Kalbaishakhi ( bn, কাল বৈশাখী) ( or, କାଳ ବୈଶାଖୀ), Bordoisila as known in Assam, are localised rainfall and thunderstorm event which occurs in Bangladesh and Indian states of Bihar, Jharkhand, Odisha, Tripura and West Bengal often exceeding . These storms generally occur in afternoon or just before sunset, when thick dark black clouds start appearing over the sky and then bring gale-speed wind with torrential rain, often with hail, but spanning only a short period of time. Etymology In Bengali, Kalbaishakhi ( bn, কালবৈশাখী) means "fateful thing" which occurs in the Bengali month of Baishakh. It is also widely known as nor'westers in English and used in English newspaper since these storm travels from northwest to southeast. In Assam, it is known as Bordoisila which was derived from the Bodo word "Bardoisikhla", in which 'Bar' means wind, 'Dol' means water and 'Sikhla' means girl, represents the goddess of na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies of World War II, Allies and the Axis powers. World War II was a total war that directly involved more than 100 million Military personnel, personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Air warfare of World War II, Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the Atomic bombings of Hiroshima and Nagasaki, only two nuclear weapons ever used in war. World War II was by far the List of wars by death toll, deadliest conflict in hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
India Meteorological Department
The India Meteorological Department (IMD) is an agency of the Ministry of Earth Sciences of the Government of India. It is the principal agency responsible for meteorological observations, weather forecasting and seismology. IMD is headquartered in Delhi and operates hundreds of observation stations across India and Antarctica. Regional offices are at Chennai, Mumbai, Kolkata, Nagpur, Guwahati and New Delhi. IMD is also one of the six Regional Specialised Meteorological Centres of the World Meteorological Organisation. It has the responsibility for forecasting, naming and distribution of warnings for tropical cyclones in the Northern Indian Ocean region, including the Malacca Straits, the Bay of Bengal, the Arabian Sea and the Persian Gulf. History In 1686, Edmond Halley published his treatise on the Indian summer monsoon, which he attributed to a seasonal reversal of winds due to the differential heating of the Asian landmass and the Indian Ocean. The first meteorologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pachaiyappa's College
Pachaiyappa's College is one of the oldest educational institutions in Chennai, in the South Indian state of Tamil Nadu. In addition, it is the first sole Indian college in Madras Presidency. History Pachaiyappa's College, Chennai is the result of an act of philanthropy of its progenitor, Pachaiyappa Mudaliar, who was a financier and merchant by the age of 22. Inspired and motivated by the preciousness and large-heartedness of the benevolent founder. This college had its genesis in the famous will of Pachaiyappa Mudaliar. The college was established as Pachaiyappa's Central Institution at Popham's Broadway on 1 January 1842, from money given in Pachaiyappa Mudaliar's will. It was the first educational institution in South India which was not funded by the British. The architecture of the institution is monumental, consisting of Indo-Saracenic and the architecture of South India. It gained college status in 1889, and until 1947 only admitted Hindu students. In addition, Pach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machilipatnam
Machilipatnam (), also known as Masulipatnam and Bandar, is a city in Krishna district of the Indian state of Andhra Pradesh. It is a municipal corporation and the administrative headquarters of Krishna district. It is also the mandal headquarters of Machilipatnam mandal in Machilipatnam revenue division of the district. The ancient port town served as the settlement of European traders from the 16th century, and it was a major trading port for the Portuguese, British, Dutch and French in the 17th century. Etymology During the 17th century, it was known by the names ''Masulipatnam'' and ''Masulipatam'', in local Telugu language, 'Masuli'/'Machili' means fish and 'Patnam' means city. ''Masula'' and ''Bandar'' (Bandar translates to 'port' in Persian language). The port town in the ancient times was also referred with the name ''Maesolia''. History The town has existed since at least the 3rd century BCE (Satavahana period) when, according to Ptolemy, it was known as Maisolos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brahmin
Brahmin (; sa, ब्राह्मण, brāhmaṇa) is a varna as well as a caste within Hindu society. The Brahmins are designated as the priestly class as they serve as priests ( purohit, pandit, or pujari) and religious teachers (guru or acharya). The other three varnas are the Kshatriya, Vaishya and Shudra. The traditional occupation of Brahmins is that of priesthood at the Hindu temples or at socio-religious ceremonies, and rite of passage rituals such as solemnising a wedding with hymns and prayers.James Lochtefeld (2002), Brahmin, The Illustrated Encyclopedia of Hinduism, Vol. 1: A–M, Rosen Publishing, , page 125 Traditionally, the Brahmins are accorded the highest ritual status of the four social classes. Their livelihood is prescribed to be one of strict austerity and voluntary poverty ("A Brahmin should acquire what just suffices for the time, what he earns he should spend all that the same day"). In practice, Indian texts suggest that some Brahmins hist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raman Effect
Raman scattering or the Raman effect () is the inelastic scattering of photons by matter, meaning that there is both an exchange of energy and a change in the light's direction. Typically this effect involves vibrational energy being gained by a molecule as incident photons from a visible laser are shifted to lower energy. This is called normal Stokes Raman scattering. The effect is exploited by chemists and physicists to gain information about materials for a variety of purposes by performing various forms of Raman spectroscopy. Many other variants of Raman spectroscopy allow rotational energy to be examined (if gas samples are used) and electronic energy levels may be examined if an X-ray source is used in addition to other possibilities. More complex techniques involving pulsed lasers, multiple laser beams and so on are known. Light has a certain probability of being scattered by a material. When photons are scattered, most of them are elastically scattered (Rayleigh scatte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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