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Pneumatic Trough
A pneumatic trough is a piece of laboratory apparatus used for collecting gases, such as hydrogen, oxygen and nitrogen. It is mainly made of glass or various fibres and are of various sizes. It was invented by Stephen Hales. Description Four items are required for gas collection with a pneumatic trough: * The trough itself, which is a large glass dish or a similar container. * A gas bottle (or bulb), to hold the gas collected. * A way to support the gas bottle or bulb, such as a beehive shelf or a hanger (as with Stephen Hales' design). * A liquid in the trough. Liquid Pneumatic troughs require a liquid such as water. Scientists also have used mercury in pneumatic troughs, but usually only for the collection of water-soluble gases. Health and safety issues surrounding mercury generally prohibit its use in modern-day pneumatic troughs. Usage The bottle is filled with water, inverted, and placed into the pneumatic trough already containing water. The outlet tube from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Hales Stephen Trough Detail
Hales is a village and civil parish in the England, English county of Norfolk. Hales is located south-east of Loddon, Norfolk, Loddon and south-east of Norwich. History Hales' name is of Anglo-Saxons, Anglo-Saxon origin and derives from the Old English for nooks of land. In the Domesday Book, Hales is listed as a settlement of 54 households in the Hundred (county division), hundred of Clavering. In 1086, the village was divided between the estates of Roger Bigod of Norfolk, Roger Bigod, Godric the Steward, Bury St Edmunds Abbey, St Edmunds Abbey and Ralph Baynard. Hales Hall was built in 1478 by James Hobart, Sir James Hobart, the Attorney General of King Henry VII. Hobart acquired the estate from Sir Roger de Hales, whose daughter had married the Duke of Norfolk. In 1666, the last Hales heiress was Lady Dionysia Williamson, who left her estate to her nephew, John Hoskins. In 1957, two Gloster Meteor, Gloster Meteors of No. 74 Squadron RAF crashed in Hales after a mid-ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Hydrogen
Hydrogen is a chemical element; it has chemical symbol, symbol H and atomic number 1. It is the lightest and abundance of the chemical elements, most abundant chemical element in the universe, constituting about 75% of all baryon, normal matter. Under standard conditions, hydrogen is a gas of diatomic molecules with the chemical formula, formula , called dihydrogen, or sometimes hydrogen gas, molecular hydrogen, or simply hydrogen. Dihydrogen is colorless, odorless, non-toxic, and highly combustible. Stars, including the Sun, mainly consist of hydrogen in a plasma state, while on Earth, hydrogen is found as the gas (dihydrogen) and in molecular forms, such as in water and organic compounds. The most common isotope of hydrogen (H) consists of one proton, one electron, and no neutrons. Hydrogen gas was first produced artificially in the 17th century by the reaction of acids with metals. Henry Cavendish, in 1766–1781, identified hydrogen gas as a distinct substance and discovere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Oxygen
Oxygen is a chemical element; it has chemical symbol, symbol O and atomic number 8. It is a member of the chalcogen group (periodic table), group in the periodic table, a highly reactivity (chemistry), reactive nonmetal (chemistry), nonmetal, and a potent oxidizing agent that readily forms oxides with most elements as well as with other chemical compound, compounds. Oxygen is abundance of elements in Earth's crust, the most abundant element in Earth's crust, making up almost half of the Earth's crust in the form of various oxides such as water, carbon dioxide, iron oxides and silicates.Atkins, P.; Jones, L.; Laverman, L. (2016).''Chemical Principles'', 7th edition. Freeman. It is abundance of chemical elements, the third-most abundant element in the universe after hydrogen and helium. At standard temperature and pressure, two oxygen atoms will chemical bond, bind covalent bond, covalently to form dioxygen, a colorless and odorless diatomic gas with the chemical formula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Nitrogen
Nitrogen is a chemical element; it has Symbol (chemistry), symbol N and atomic number 7. Nitrogen is a Nonmetal (chemistry), nonmetal and the lightest member of pnictogen, group 15 of the periodic table, often called the Pnictogen, pnictogens. It is a common element in the universe, estimated at Abundance of the chemical elements, seventh in total abundance in the Milky Way and the Solar System. At standard temperature and pressure, two atoms of the element chemical bond, bond to form N2, a colourless and odourless diatomic molecule, diatomic gas. N2 forms about 78% of Atmosphere of Earth, Earth's atmosphere, making it the most abundant chemical species in air. Because of the volatility of nitrogen compounds, nitrogen is relatively rare in the solid parts of the Earth. It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772 and independently by Carl Wilhelm Scheele and Henry Cavendish at about the same time. The name was suggested by French chemist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Stephen Hales
Stephen Hales (17 September 16774 January 1761) was an English clergyman who made major contributions to a range of scientific fields including botany, pneumatic chemistry and physiology. He was the first person to measure blood pressure. He also invented several devices, including a ventilation (architecture), ventilator, a pneumatic trough and a surgical forceps for the removal of bladder stones. In addition to these achievements, he was a Philanthropy, philanthropist and wrote a popular tract on Alcohol intoxication, alcoholic intemperance. Life Stephen Hales was born in Bekesbourne, Kent, England. He was the sixth son of Thomas Hales, heir to Baronetcy of Beakesbourne and Brymore School, Brymore, and his wife, Mary (née Wood), and was one of twelve or possibly thirteen children.Clark-Kennedy, A. E. ''Stephen Hales, D.D., F.R.S.: An eighteenth century biography''. Cambridge University Press, 1929. Thomas Hales (died 1692) predeceased his father, Sir Robert Hales, 1st Baronet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Advanced CSP Teaching Materials
The Advanced Party (), otherwise known as the Advanced Association () was a liberal and centrist Zionist political association in Mandatory Palestine founded by several urban liberal Zionists. The party was founded in order to represent the voice of Tel Aviv liberals and Zionists in the election to the Yishuv's Assembly of Representatives in 1920. The party placed sixth in the election, coming in behind their rural General Zionist counterrpart, Hitahdut HaIkarim. The party represents first formal General Zionist political party to be founded, and as one of the earliest political ancestors of the modern-day Likud. History Under the British Mandate, the Yishuv (Jewish community), established a network of political and administrative institutions, among them the Assembly of Representatives.Itamar Rabinovich & Jehuda Reinharz (2008''Israel in the Middle East''Brandeis University Press, p84 To ensure that small groups were properly represented, a system of proportional representation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
University Of Kassel
The University of Kassel () is a university founded in 1971 located in Kassel, Hessen, in central Germany. As of February 2022 it had about 25,000 students and about 3300 staff, including more than 300 professors. A special unit (Studienkolleg) prepares international students for their period of study (language and academic skills). International students come from over 115 countries. Each academic year, more than 100 visiting scholars pursue research projects in cooperation with colleagues from the University of Kassel, making a valuable contribution to the academic and cultural life. The newly established International House is located on the campus. It offers hostels for international guests and is available for meetings, conferences, and cultural events. Precincts In addition to the central campus Holländischer Platz, the University of Kassel has the other campuses Heinrich-Plett-Straße, Menzelstraße, Wilhelmshöher Allee and Damaschkestraße in Kassel as well as tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Beehive Shelf
A beehive is an enclosed structure which houses honey bees, subgenus ''Honey bee, Apis.'' Honey bees live in the beehive, raising their young and producing honey as part of their seasonal cycle. Though the word ''beehive'' is used to describe the nest of any bee colony, scientific and professional literature distinguishes ''nest'' from ''hive''. ''Nest'' is used to discuss colonies that house themselves in natural or artificial cavities or are hanging and exposed. The term ''hive'' is used to describe a manmade structure to house a honey bee nest. Several species of ''Apis'' live in colonies. But for honey production, the western honey bee (''Apis mellifera'') and the eastern honey bee (''Apis cerana'') are the main species kept in hives. The nest's internal structure is a densely packed group of Triangular prismatic honeycomb#Hexagonal prismatic honeycomb, hexagonal prismatic cells made of beeswax, called a honeycomb. The bees use the cells to store food (honey and pollen) and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Mercury (element)
Mercury is a chemical element; it has Symbol (chemistry), symbol Hg and atomic number 80. It is commonly known as quicksilver. A Heavy metal element, heavy, silvery d-block element, mercury is the only metallic element that is known to be liquid at standard temperature and pressure; the only other element that is liquid under these conditions is the halogen bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature. Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). The red pigment vermilion is obtained by Mill (grinding), grinding natural cinnabar or synthetic mercuric sulfide. Exposure to mercury and mercury-containing organic compounds is toxic to the nervous system, immune system and kidneys of humans and other animals; mercury poisoning can result from exposure to water-soluble forms of mercury (such as mercuric chloride or methylmercury) either directly or through mechanisms of biomagnification. Mercu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Nat Commun
''Nature Communications'' is a peer-reviewed, open access, scientific journal published by Nature Portfolio since 2010. It is a multidisciplinary journal that covers the natural sciences, including physics, chemistry, earth sciences, medicine, and biology. The journal has editorial offices in London, Berlin, New York City, and Shanghai. The founding editor-in-chief was Lesley Anson, followed by Joerg Heber, Magdalena Skipper, and Elisa De Ranieri. the editors are Nathalie Le Bot for health and clinical sciences, Stephane Larochelle for biological sciences, Enda Bergin for chemistry and biotechnology, and Prabhjot Saini for physics and earth sciences. Starting October 2014, the journal only accepted submissions from authors willing to pay an article processing charge. Until the end of 2015, part of the published submissions were only available to subscribers. In January 2016, all content became freely accessible. Starting from 2017, the journal offers a deposition service t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Priestley Joseph Pneumatic Trough
Priestley may refer to: Places * Priestley, West Virginia, US, an unincorporated community * Priestley Glacier, a major valley glacier in Antarctica * Priestley (lunar crater), on the far side of the Moon * Priestley (Martian crater) * 5577 Priestley, an inner main belt asteroid People Arts * Alice Priestley (born 1962), Canadian children's writer and illustrator * Bel Priestley (born 2003), English actress and internet personality * Brian Priestley (born 1940), English jazz writer, pianist and arranger * Joanna Priestley (born 1950), American film director and animator * Chris Priestley (born 1958), British children's book author and illustrator * Jason Priestley (born 1969), Canadian-American actor * J. B. Priestley (1894–1984), English writer and broadcaster * Mark Priestley (1976–2008), Australian actor *Rick Priestley (born 1959), British miniature wargame designer and author * Robert Priestley (1901–1986), American set decorator * Tom Priestley (born 1932), sound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Massachusetts Institute Of Technology
The Massachusetts Institute of Technology (MIT) is a Private university, private research university in Cambridge, Massachusetts, United States. Established in 1861, MIT has played a significant role in the development of many areas of modern technology and science. In response to the increasing Technological and industrial history of the United States, industrialization of the United States, William Barton Rogers organized a school in Boston to create "useful knowledge." Initially funded by a land-grant universities, federal land grant, the institute adopted a Polytechnic, polytechnic model that stressed laboratory instruction in applied science and engineering. MIT moved from Boston to Cambridge in 1916 and grew rapidly through collaboration with private industry, military branches, and new federal basic research agencies, the formation of which was influenced by MIT faculty like Vannevar Bush. In the late twentieth century, MIT became a leading center for research in compu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
