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Julius Robert Von Mayer
Julius Robert von Mayer (25 November 1814 – 20 March 1878) was a German physician, chemist, and physicist and one of the founders of thermodynamics. He is best known for enunciating in 1841 one of the original statements of the conservation of energy or what is now known as one of the first versions of the first law of thermodynamics, namely that "energy can be neither created nor destroyed". In 1842, Mayer described the vital chemical process now referred to as oxidation as the primary source of energy for any living creature. He also proposed that plants convert light into chemical energy. His achievements were overlooked and priority for the discovery in 1842 of the ''mechanical equivalent of heat'' was attributed to James Joule in the following year. Early life Mayer was born on 25 November 1814 in Heilbronn, Württemberg (Baden-Württemberg, modern day Germany), the son of a pharmacist. He grew up in Heilbronn. After completing his ''Abitur'', he studied medicine at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heilbronn
Heilbronn () is a List of cities and towns in Germany, city in northern Baden-Württemberg, Germany, surrounded by Heilbronn (district), Heilbronn District. From the late Middle Ages on, it developed into an important trading centre. At the beginning of the 19th century, Heilbronn became one of the centres of early industrialisation in Württemberg. Heilbronn's old town was completely destroyed during the air raid of 4 December 1944 and rebuilt in the 1950s. Today Heilbronn is the economic centre of the Heilbronn-Franconia, Heilbronn-Franken region. Heilbronn is known for its wine industry and is nicknamed ''Käthchenstadt'', after Heinrich von Kleist's ''Das Käthchen von Heilbronn''. Geography Heilbronn is located in the northern corner of the Neckar Sedimentary basin, basin at the bottom of the Wartberg (Heilbronn), Wartberg (308 m). It occupies both banks of the Neckar, and the highest spot inside city limits is the Schweinsberg (mountain), Schweinsberg with a height of 372 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemistry
Chemistry is the scientific study of the properties and behavior of matter. It is a physical science within the natural sciences that studies the chemical elements that make up matter and chemical compound, compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during chemical reaction, reactions with other chemical substance, substances. Chemistry also addresses the nature of chemical bonds in chemical compounds. In the scope of its subject, chemistry occupies an intermediate position between physics and biology. It is sometimes called the central science because it provides a foundation for understanding both Basic research, basic and Applied science, applied scientific disciplines at a fundamental level. For example, chemistry explains aspects of plant growth (botany), the formation of igneous rocks (geology), how atmospheric ozone is formed and how environmental pollutants are degraded (ecology), the prop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Education In Germany
Education in Germany is primarily the responsibility of individual German States of Germany, states (), with the federal government only playing a minor role. While kindergarten (nursery school) is optional, formal education is compulsory for all children from the age of 6-7. Details vary from state to state. For example, in Bavaria, children need to attend school for a total of 12 years (of which 3 may be for an apprenticeship); while in Brandenburg, school must be attended until the end of the school year in which the pupil turns 18. Students can complete three types of school leaving qualifications, ranging from the more vocational Hauptschulabschluss and Mittlere Reife over to the more academic Abitur. The latter permits students to apply to study at university level. A bachelor's degree is commonly followed up with a master's degree, with 45% of all undergraduates proceeding to postgraduate studies within 1.5 years of graduating. While rules vary (see → ) from States of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Student Corps
Corps (or Korps; "''das ~''" ('' n''), (''sg.''), (''pl.'')) are the oldest still-existing kind of '' Studentenverbindung'', Germany's traditional university corporations; their roots date back to the 15th century. The oldest corps still existing today was founded in 1789. Its members are referred to as corps students (''Corpsstudenten''). The corps belong to the tradition of student fraternities which wear couleur and practice academic fencing. Most corps are organized in two federations, the '' Kösener Senioren-Convents-Verband'' (''KSCV'') and the ''Weinheimer Senioren-Convent'' (''WSC''). Together, they comprise 162 Corps throughout Germany, Austria, Belgium, Estonia, Latvia, Hungary, Switzerland and Lithuania. The German Student Corps were traditionally recruited from the nobility, royalty, and social elite, and are traditionally viewed as more aristocratic and elitist than other German student fraternities such as the Catholic Cartellverband and the Burschenschaften ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abitur
''Abitur'' (), often shortened colloquially to ''Abi'', is a qualification granted at the end of secondary education in Germany. It is conferred on students who pass their final exams at the end of ISCED 3, usually after twelve or thirteen years of schooling (see also, for Germany, ''Abitur'' after twelve years). In German, the term has roots in the older word meaning "Leave (Graduation) exam/diploma", which in turn was derived from the Latin (future active participle of , thus "someone who is going to leave"). As a matriculation examination, ''Abitur'' can be compared to A levels, the '' Matura'' or the International Baccalaureate Diploma, which are all ranked as level 4 in the European Qualifications Framework. In Germany Overview The ("certificate of general qualification for university entrance"), often referred to as ("''Abitur'' certificate"), issued after candidates have passed their final exams and have had appropriate grades in both the last and second last s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pharmacist
A pharmacist, also known as a chemist in English in the Commonwealth of Nations, Commonwealth English, is a healthcare professional who is knowledgeable about preparation, mechanism of action, clinical usage and legislation of medications in order to dispense them safely to the public and to provide consultancy services. A pharmacist also often serves as a primary care provider in the community and offers services, such as health screenings and immunizations. Pharmacists undergo university or graduate-level education to understand the biochemical mechanisms and actions of drugs, drug uses, therapeutic roles, side effects, potential drug interactions, and monitoring parameters. In developing countries, a diploma course from approved colleges qualifies one for pharmacist role. This is mated to anatomy, physiology, and pathophysiology. Pharmacists interpret and communicate this specialized knowledge to patients, physicians, and other health care providers. Among other licensing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baden-Württemberg
Baden-Württemberg ( ; ), commonly shortened to BW or BaWü, is a states of Germany, German state () in Southwest Germany, east of the Rhine, which forms the southern part of Germany's western border with France. With more than 11.07 million inhabitants across a total area of nearly , it is the third-largest German state by both List of German states by area, area (behind Bavaria and Lower Saxony) and List of German states by population, population (behind North Rhine-Westphalia and Bavaria). The List of cities in Baden-Württemberg by population, largest city in Baden-Württemberg is the state capital of Stuttgart, followed by Mannheim and Karlsruhe. Other major cities are Freiburg im Breisgau, Heidelberg, Heilbronn, Konstanz, Pforzheim, Reutlingen, Tübingen, and Ulm. Modern Baden-Württemberg includes the historical territories of Baden, Prussian Province of Hohenzollern, Hohenzollern, and Württemberg. Baden-Württemberg became a state of West Germany in April 1952 through ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Württemberg
Württemberg ( ; ) is a historical German territory roughly corresponding to the cultural and linguistic region of Swabia. The main town of the region is Stuttgart. Together with Baden and Province of Hohenzollern, Hohenzollern, two other historical territories, Württemberg now forms the Federal State of Baden-Württemberg. Württemberg was formerly also spelled Würtemberg and Wirtemberg Castle, Wirtemberg. History Originally part of the old Duchy of Swabia, its history can be summarized in the following periods: *County of Württemberg (1083–1495) *Duchy of Württemberg (1495–1803) *Electorate of Württemberg (1803–1806) *Kingdom of Württemberg (1806–1918) *Free People's State of Württemberg (1918–1945) After World War II, it was split into Württemberg-Baden and Württemberg-Hohenzollern owing to the different Allied Occupation Zones in Germany, occupation zones of the United States and France. Finally, in 1952, it was integrated into Baden-Württemberg. Stutt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Joule
James Prescott Joule (; 24 December 1818 11 October 1889) was an English physicist. Joule studied the nature of heat and discovered its relationship to mechanical work. This led to the law of conservation of energy, which in turn led to the development of the first law of thermodynamics. The International System of Units, SI unit of energy, the joule (J), is named after him. He worked with Lord Kelvin to develop an absolute thermodynamic temperature scale, which came to be called the Kelvin scale. Joule also made observations of magnetostriction, and he found the relationship between the electric current, current through a resistor and the heat dissipation, dissipated, which is also called Joule's first law. His experiments about energy transformations were first published in 1843. Early years James Joule was born in 1818, the son of Benjamin Joule (1784–1858), a wealthy brewer, and his wife, Alice Prescott, on New Bailey Street in City of Salford, Salford. Joule was tutor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanical Equivalent Of Heat
In the history of science, the mechanical equivalent of heat states that motion and heat are mutually interchangeable and that in every case, a given amount of work would generate the same amount of heat, provided the work done is totally converted to heat energy. The mechanical equivalent of heat was a concept that had an important part in the development and acceptance of the conservation of energy and the establishment of the science of thermodynamics in the 19th century. Its independent and simultaneous discovery by James Prescott Joule and by Julius Robert von Mayer led to a priority dispute. History and priority dispute Benjamin Thompson, Count Rumford, had observed the frictional heat generated by boring cannon at the arsenal in Munich, Bavaria, circa 1797. Rumford immersed a cannon barrel in water and arranged for a specially blunted boring tool. He showed that the water could be boiled within roughly two and a half hours and that the supply of frictional heat was se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants
Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll. Exceptions are parasitic plants that have lost the genes for chlorophyll and photosynthesis, and obtain their energy from other plants or fungi. Most plants are multicellular, except for some green algae. Historically, as in Aristotle's biology, the plant kingdom encompassed all living things that were not animals, and included algae and fungi. Definitions have narrowed since then; current definitions exclude fungi and some of the algae. By the definition used in this article, plants form the clade Viridiplantae (green plants), which consists of the green algae and the embryophytes or land plants ( hornworts, liverworts, mosses, lycophytes, ferns, conifers and other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
