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1756 In Science
The year 1756 in science and technology involved some significant events. Chemistry * Joseph Black describes how carbonates become more alkaline when they lose carbon dioxide, whereas the taking-up of carbon dioxide reconverts them. * Scottish physician Francis Home publishes ''Experiments on Bleaching'' in Edinburgh. * Mikhail Lomonosov disproves the phlogiston theory of combustion and pioneers the study of oxidation by converting tin to stannic oxide. History of science * Thomas Birch begins publication of ''The History of the Royal Society of London''. Technology * John Smeaton produces the first high-quality cement using hydraulic lime since Roman times for construction of the third Eddystone Lighthouse (completed 1759, following burning down of the second in 1755). * The recipe for mayonnaise (originally "salsa mahonesa" or "maonesa") is probably brought back to France by his chef after Louis François Armand du Plessis, duc de Richelieu's military success on Menorca. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science
Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence for scientific reasoning is tens of thousands of years old. The earliest written records in the history of science come from Ancient Egypt and Mesopotamia in around 3000 to 1200 BCE. Their contributions to mathematics, astronomy, and medicine entered and shaped Greek natural philosophy of classical antiquity, whereby formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Western Europe during the early centuries (400 to 1000 CE) of the Middle Ages, but was preserved in the Muslim world during the Islamic Golden Age and later by the efforts of Byzantine Greek scholars who brought Greek ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Lime
Hydraulic lime (HL) is a general term for calcium oxide, a variety of lime also called quicklime, that sets by hydration. This contrasts with calcium hydroxide, also called slaked lime or air lime that is used to make lime mortar, the other common type of lime mortar, which sets by carbonation (re-absorbing carbon dioxide (CO2) from the air). Hydraulic lime provides a faster initial set and higher compressive strength than air lime, and hydraulic lime will set in more extreme conditions, including under water. The terms 'hydraulic lime' and 'hydrated lime' are quite similar and may be confused but are not necessarily the same material. Hydrated lime is any lime which has been slaked whether it sets through hydration, carbonation, or both. Calcium reacts in the lime kiln with the clay minerals to produce silicates that enable some of the lime to set through hydration. Any unreacted calcium is slaked to calcium hydroxide which sets through carbonation. These are sometimes called 's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1832 In Science
The year 1832 in science and technology involved some significant events, listed below. Biology * Dr. Thomas Bell begins publication of ''A Monograph of the Testudinata'', the first comprehensive study of the world's turtles. * Isidore Geoffroy Saint-Hilaire begins publication of ''Histoire générale et particulière des anomalies de l'organisation chez l'homme et les animaux'', a key text on teratology. Chemistry * Pierre Jean Robiquet isolates the analgesic codeine. * Friedrich Wöhler and Justus von Liebig discover and explain functional groups and radicals in relation to organic chemistry. * Pittacal was discovered by German chemist Carl Ludwig Reichenbach. Exploration * April 21 – Cyrille Pierre Théodore Laplace completes a four-year global circumnavigation. Mathematics * Évariste Galois presents a general condition for the solvability of algebraic equations, thereby essentially founding group theory and Galois theory. On May 29, the eve of a duel from which he wil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nitrogen
Nitrogen is the chemical element with the symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System. At standard temperature and pressure, two atoms of the element bond to form N2, a colorless and odorless diatomic gas. N2 forms about 78% of Earth's atmosphere, making it the most abundant uncombined element. Nitrogen occurs in all organisms, primarily in amino acids (and thus proteins), in the nucleic acids ( DNA and RNA) and in the energy transfer molecule adenosine triphosphate. The human body contains about 3% nitrogen by mass, the fourth most abundant element in the body after oxygen, carbon, and hydrogen. The nitrogen cycle describes the movement of the element from the air, into the biosphere and organic compounds, then back into the atmosphere. Many indus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemist
A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms. Chemists carefully measure substance proportions, chemical reaction rates, and other chemical properties. In Commonwealth English, pharmacists are often called chemists. Chemists use their knowledge to learn the composition and properties of unfamiliar substances, as well as to reproduce and synthesize large quantities of useful naturally occurring substances and create new artificial substances and useful processes. Chemists may specialize in any number of subdisciplines of chemistry. Materials scientists and metallurgists share much of the same education and skills with chemists. The work of chemists is often related to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Antoine Chaptal
Jean-Antoine Chaptal, comte de Chanteloup (5 June 1756 – 30 July 1832) was a French chemist, physician, agronomist, industrialist, statesman, educator and philanthropist. His multifaceted career unfolded during one of the most brilliant periods in French science. In chemistry it was the time of Antoine Lavoisier, Claude-Louis Berthollet, Louis Guyton de Morveau, Antoine-François Fourcroy and Joseph Gay-Lussac. Chaptal made his way into this elite company in Paris beginning in the 1780s, and established his credentials as a serious scientist most definitely with the publication of his first major scientific treatise, the ''Ėléments de chimie'' (3 vols, Montpellier, 1790). His treatise brought the term "nitrogen" into the revolutionary new chemical nomenclature developed by Lavoisier. By 1795, at the newly established ''École Polytechnique'' in Paris, Chaptal shared the teaching of courses in pure and applied chemistry with Claude-Louis Berthollet, the doyen of the science. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copley Medal
The Copley Medal is an award given by the Royal Society, for "outstanding achievements in research in any branch of science". It alternates between the physical sciences or mathematics and the biological sciences. Given every year, the medal is the oldest Royal Society medal awarded and the oldest surviving scientific award in the world, having first been given in 1731 to Stephen Gray (scientist), Stephen Gray, for "his new Electrical Experiments: – as an encouragement to him for the readiness he has always shown in obliging the Society with his discoveries and improvements in this part of Natural Knowledge". __TOC__ History The medal was created following a donation of Pound sterling, £100 to be used for carrying out experiments by Sir Godfrey Copley, 2nd Baronet, Sir Godfrey Copley, for which the interest on the amount was used for several years. The conditions for the medal have been changed several times; in 1736, it was suggested that "a medal or other honorary prize s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menorca
Menorca or Minorca (from la, Insula Minor, , smaller island, later ''Minorica'') is one of the Balearic Islands located in the Mediterranean Sea belonging to Spain. Its name derives from its size, contrasting it with nearby Majorca. Its capital is Mahón ( ca, Maó), situated on the island's eastern end, although Menorca is not a province and forms a political union with the other islands in the archipelago. Ciutadella and Mahon are the main ports and largest towns. The port of Mahon is the second biggest natural port in the world. Menorca has a population of approximately 93,397 (at 1 January 2019). It is located 39°47' to 40°00'N, 3°52' to 4°24'E. Its highest point, called El Toro (from Catalan "''turó''" meaning ''hill''), is above sea level. History The island is known for its collection of megalithic stone monuments: ''navetes'', ''taules'' and ''talaiots'', which indicate very early prehistoric human activity. Some of the earliest culture on Menorca was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis François Armand Du Plessis, Duc De Richelieu
Louis François Armand de Vignerot du Plessis, duc de Richelieu (; 13 March 1696 – 8 August 1788), was a French soldier, diplomat and statesman. He joined the army and participated in three major wars. He eventually rose to the rank of Marshal of France. He was the son of Armand Jean de Vignerot du Plessis, duc de Richelieu, who in turn was a great-nephew of Cardinal Richelieu, the prominent French statesman who had dominated France in the early 17th century. Early years Louis François Armand de Vignerot du Plessis was born in Paris, and Louis XIV of France was his godfather. In his early days, he was thrice imprisoned in the Bastille: in 1711 at the instance of his stepfather, in 1716 in consequence of a duel, and in 1719 for his share in the Cellamare Conspiracy of Giulio Alberoni against Philippe II, Duke of Orléans, the regent for Louis XV of France. Apart from his reputation as a man of exceptionally loose morals, he attained, in spite of a deplorably defective edu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pacific and Indian Oceans. Its Metropolitan France, metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean. Due to its several coastal territories, France has the largest exclusive economic zone in the world. France borders Belgium, Luxembourg, Germany, Switzerland, Monaco, Italy, Andorra, and Spain in continental Europe, as well as the Kingdom of the Netherlands, Netherlands, Suriname, and Brazil in the Americas via its overseas territories in French Guiana and Saint Martin (island), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mayonnaise
Mayonnaise (; ), colloquially referred to as "mayo" , is a thick, cold, and creamy sauce or dressing commonly used on sandwiches, hamburgers, composed salads, and French fries. It also forms the base for various other sauces, such as tartar sauce, fry sauce, remoulade, salsa golf, and rouille. Mayonnaise is an emulsion of oil, egg yolk, and an acid, either vinegar or lemon juice; there are many variants using additional flavorings. The color varies from near-white to pale yellow, and its texture from a light cream to a thick gel. Commercial eggless imitations are made for those who avoid chicken eggs because of egg allergies, to limit dietary cholesterol, or because they are vegans. History ''Mayonnaise'' is a French cuisine appellation that seems to have appeared for the first time in 1806. The hypotheses invoked over time as to the origin(s) of mayonnaise have been numerous and contradictory. Most hypotheses do however agree on the geographical origin of the sauce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1755 In Science
The year 1755 in science and technology involved some significant events. Astronomy * Immanuel Kant develops the nebular hypothesis in his '' Universal Natural History and Theory of Heaven'' (''Allgemeine Naturgeschichte und Theorie des Himmels''). Chemistry * June – Joseph Black's discovery of carbon dioxide ("fixed air") and magnesium is communicated in a paper to the Philosophical Society of Edinburgh. Earth sciences * November 1 – An earthquake in Lisbon kills 30,000 inhabitants. * Publication of ''De Litteraria expeditione per pontificiam ditionem ad dimetiendos duos meridiani gradus a PP'', a description of the measurement of a meridian arc carried out in the Papal States by Ruđer Bošković with Christopher Maire in 1750–52. Mathematics * Leonhard Euler's ''Institutiones calculi differentialis'' is published. Technology * December 2 – The second Eddystone Lighthouse (1709–1755), with a wooden cone, catches fire and burns to the ground; it will be rebuilt in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
