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David E. H. Jones
David Edward Hugh Jones (20 April 1938 – 19 July 2017) was a British chemist and author, who under the pen name Daedalus was the fictional inventor for DREADCO. Jones' columns as Daedalus were published for 38 years, starting weekly in 1964 in ''New Scientist''. He then moved to the journal ''Nature'', and continued to publish until 2002. Columns from these magazines, along with additional comments and implementation sketches, were collected in two books: ''The Inventions of Daedalus: A Compendium of Plausible Schemes'' (1982) and ''The Further Inventions of Daedalus'' (1999). Early life and education He was born in Southwark, London. His father, Philip, was an advertising copywriter. His mother was Dorothea, née Sitters. He had one brother, Peter Vaughan Jones. He attended Crofton Primary School in Orpington, Kent, and then Eltham College. His professional training was as a chemist. In 1962, he graduated in chemistry and completed a PhD in organic chemistry from Imperia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southwark
Southwark ( ) is a district of Central London situated on the south bank of the River Thames, forming the north-western part of the wider modern London Borough of Southwark. The district, which is the oldest part of South London, developed due to its position at the southern end of the early versions of London Bridge, the only crossing point for many miles. London's historic core, the City of London, lay north of the Bridge and for centuries the area of Southwark just south of the bridge was partially governed by the city. By the 12th century Southwark had been incorporated as an ancient borough, and this historic status is reflected in the alternative name of the area, as Borough. The ancient borough of Southwark's river frontage extended from the modern borough boundary, just to the west of by the Oxo Tower, to St Saviour's Dock (originally the mouth of the River Neckinger) in the east. In the 16th century, parts of Southwark became a formal City ward, Bridge Without. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buckminsterfullerene
Buckminsterfullerene is a type of fullerene with the formula C60. It has a cage-like fused-ring structure (truncated icosahedron) made of twenty hexagons and twelve pentagons, and resembles a soccer ball. Each of its 60 carbon atoms is bonded to its three neighbors. Buckminsterfullerene is a black solid that dissolves in hydrocarbon solvents to produce a violet solution. The compound was discovered in 1985 and has received intense study, although few real world applications have been found. Occurrence Buckminsterfullerene is the most common naturally occurring fullerene. Small quantities of it can be found in soot. It also exists in space. Neutral C60 has been observed in planetary nebulae and several types of star. The ionised form, C60+, has been identified in the interstellar medium, where it is the cause of several absorption features known as diffuse interstellar bands in the near-infrared. History Theoretical predictions of buckyball molecules appeared in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blogspot
Blogger is an American online content management system founded in 1999 which enables multi-user blogs with time-stamped entries. Pyra Labs developed it before being acquired by Google in 2003. Google hosts the blogs, which can be accessed through a subdomain of blogspot.com. Blogs can also be accessed from a user-owned custom domain (such as www.example.com) by using DNS facilities to direct a domain to Google's servers. A user can have up to 100 blogs or websites per account. Google Blogger also enabled users to publish blogs and websites to their own web hosting server via FTP until May 1, 2010. All such blogs and websites had to be redirected to a blogspot.com subdomain or point their own domain to Google's servers via DNS. Google Blogger has a wide international user base and is available in more than 60 languages, despite its decline in popularity in the United States. History Pyra Labs launched Blogger on August 23, 1999. It is credited with popularizing the format ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technisches Museum Wien
The Vienna Technical Museum (german: Technisches Museum Wien) is located in Vienna (Austria), in the Penzing district, at Mariahilferstraße 212. The decision to establish a technical museum was made in 1908, and construction of the building started in 1909. On June 20, 1909, Emperor Franz Josef laid the foundation stone. The museum was opened in 1918. The permanent exhibition categories include: Nature and Knowledge: astronomy, principals, physics; Heavy industry: mining, iron, steel; Energy; Mass production - luxury goods; Everyday life - directions for use; Communications and information media; Musical instruments; Transport; Basic Research - A great adventure. Gallery Image:Museum-visitor-vienna.jpg, Austro-Daimler File:Hönig-Synthesizer.jpg, Synthesizer File:Otto Bock Beinprothese genium Technisches Museum Wien Februar 2013.JPG, Otto Bock Ottobock SE & Co. KGaA, formerly Otto Bock, is a company based in Duderstadt Germany, that operates in the field of orthopedic t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perpetual-motion
Perpetual motion is the motion of bodies that continues forever in an unperturbed system. A perpetual motion machine is a hypothetical machine that can do work infinitely without an external energy source. This kind of machine is impossible, as it would violate either the first or second law of thermodynamics or both. These laws of thermodynamics apply regardless of the size of the system. For example, the motions and rotations of celestial bodies such as planets may appear perpetual, but are actually subject to many processes that slowly dissipate their kinetic energy, such as solar wind, interstellar medium resistance, gravitational radiation and thermal radiation, so they will not keep moving forever. Thus, machines that extract energy from finite sources will not operate indefinitely, because they are driven by the energy stored in the source, which will eventually be exhausted. A common example is devices powered by ocean currents, whose energy is ultimately derived fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microgravity
The term micro-g environment (also μg, often referred to by the term microgravity) is more or less synonymous with the terms ''weightlessness'' and ''zero-g'', but emphasising that g-forces are never exactly zero—just very small (on the International Space Station (ISS), for example, the small g-forces come from tidal effects, gravity from objects other than the Earth, such as astronauts, the spacecraft, and the Sun, air resistance, and astronaut movements that impart momentum to the space station). The symbol for microgravity, ''μg'', was used on the insignias of Space Shuttle flights STS-87 and STS-107, because these flights were devoted to microgravity research in low Earth orbit. The most commonly known microgravity environment can be found aboard the ISS which is located in low-earth orbit at an altitude of around 400 km, orbiting Earth approximately 15 times per day in what is considered free fall. The effects of free fall also enable the creation of short-du ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Shuttle
The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. Its official program name was Space Transportation System (STS), taken from a 1969 plan for a system of reusable spacecraft where it was the only item funded for development. The first ( STS-1) of four orbital test flights occurred in 1981, leading to operational flights (STS-5) beginning in 1982. Five complete Space Shuttle orbiter vehicles were built and flown on a total of 135 missions from 1981 to 2011. They launched from the Kennedy Space Center (KSC) in Florida. Operational missions launched numerous satellites, interplanetary probes, and the Hubble Space Telescope (HST), conducted science experiments in orbit, participated in the Shuttle-''Mir'' program with Russia, and participated in construction and servicing of the International Space Station (ISS). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Napoleon
Napoleon Bonaparte ; it, Napoleone Bonaparte, ; co, Napulione Buonaparte. (born Napoleone Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French military commander and political leader who rose to prominence during the French Revolution and led successful campaigns during the Revolutionary Wars. He was the ''de facto'' leader of the French Republic as First Consul from 1799 to 1804, then Emperor of the French from 1804 until 1814 and again in 1815. Napoleon's political and cultural legacy endures to this day, as a highly celebrated and controversial leader. He initiated many liberal reforms that have persisted in society, and is considered one of the greatest military commanders in history. His wars and campaigns are studied by militaries all over the world. Between three and six million civilians and soldiers perished in what became known as the Napoleonic Wars. Napoleon was born on the island of Corsica, not long af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arsenic
Arsenic is a chemical element with the symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid. It has various allotropes, but only the gray form, which has a metallic appearance, is important to industry. The primary use of arsenic is in alloys of lead (for example, in car batteries and ammunition). Arsenic is a common n-type dopant in semiconductor electronic devices. It is also a component of the III-V compound semiconductor gallium arsenide. Arsenic and its compounds, especially the trioxide, are used in the production of pesticides, treated wood products, herbicides, and insecticides. These applications are declining with the increasing recognition of the toxicity of arsenic and its compounds. A few species of bacteria are able to use arsenic compounds as respiratory metabolites. Trace quantities of arsenic are an essential dietary element in rats, ham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycle And Motorcycle Dynamics
Bicycle and motorcycle dynamics is the science of the motion of bicycles and motorcycles and their components, due to the forces acting on them. Dynamics falls under a branch of physics known as classical mechanics. Bike motions of interest include balancing, steering, braking, accelerating, suspension activation, and vibration. The study of these motions began in the late 19th century and continues today. Bicycles and motorcycles are both single-track vehicles and so their motions have many fundamental attributes in common and are fundamentally different from and more difficult to study than other wheeled vehicles such as dicycles, tricycles, and quadracycles. As with unicycles, bikes lack lateral stability when stationary, and under most circumstances can only remain upright when moving forward. Experimentation and mathematical analysis Analysis is the branch of mathematics dealing with continuous functions, limit (mathematics), limits, and related theories, such as Der ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeoacoustics
Archaeoacoustics is a sub-field of archaeology and acoustics which studies the relationship between people and sound throughout history. It is an interdisciplinary field with methodological contributions from acoustics, archaeology, and computer simulation, and is broadly related to topics within cultural anthropology such as experimental archaeology and ethnomusicology. Since many cultures have sonic components, applying acoustical methods to the study of archaeological sites and artifacts may reveal new information on the civilizations examined. Disciplinary methodology As the study of archaeoacoustics is concerned with a variety of cultural phenonemena, the methodologies depend on the subject of inquiry. The majority of archaeoacoustic studies can be grouped into either a study of artefacts (like musical instruments) or places (buildings or sites). For archaeological or historical sites that still exist in the present day, measurement methods from the realm of architectural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Elevator
A space elevator, also referred to as a space bridge, star ladder, and orbital lift, is a proposed type of planet-to-space transportation system, often depicted in science fiction. The main component would be a cable (also called a tether) anchored to the surface and extending into space. The design would permit vehicles to travel up the cable from a planetary surface, such as the Earth's, directly into orbit, without the use of large rockets. An Earth-based space elevator could not feasibly be simply a tall tower supported from below, due to the immense weight - instead it would consist of a cable with one end attached to the surface near the equator and the other end attached to a counterweight in space beyond geostationary orbit (35,786 km altitude). The competing forces of gravity, which is stronger at the lower end, and the upward centrifugal force, which is stronger at the upper end, would result in the cable being held up, under tension, and stationary over a singl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
