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Deadalus Research Evaluation And Development Corporation
David Edward Hugh Jones (20 April 1938 – 19 July 2017) was a British chemist and writer, 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 Im ... [...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, for centuries the only dry crossing on the river. Around 43 AD, engineers of the Roman Empire found the geographic features of the south bank here suitable for the placement and construction of the first bridge. 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, while other areas of the district were more loosely governed. The section known as Liberty of the Clink became a place of entertainment. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buckminsterfullerene
Buckminsterfullerene is a type of fullerene with the formula . It has a cage-like fused-ring structure ( truncated icosahedron) made of twenty hexagons and twelve pentagons, and resembles a football. 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 substance was discovered in 1985 and has received intense study, although few real world applications have been found. Molecules of buckminsterfullerene (or of fullerenes in general) are commonly nicknamed buckyballs. Occurrence Buckminsterfullerene is the most common naturally occurring fullerene. Small quantities of it can be found in soot. It also exists in space. Neutral has been observed in planetary nebulae and several types of star. The ionised form, , has been identified in the interstellar medium, where it is the cause of several absorption features known as diffuse interstellar bands in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blogspot
Blogger is an American online content management system founded in 1999 that enables its users to write 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. Blogger 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. History Pyra Labs launched Blogger on August 23, 1999. It is credited with popularizing the format as one of the first dedicated blog-publishing tools. Pyra Labs was purchased by Google in February 2003 for an undisclosed amount. Premium features, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technisches Museum Wien
The Vienna Museum of Science and Technology () is a museum in Penzing, Vienna, Austria, on Mariahilfer Straße. The museum showcases the history and development of technology, industry, and science, with a focus on Austrian involvement. It houses numerous historical models, such as those from the fields of rail transport, shipbuilding, aviation, and industry, as well as one of the largest collections of historical musical instruments in Austria. History Prehistory In 1908, to mark the 60th anniversary of Emperor Franz Joseph I's accession to the throne, it was decided to establish a Technical Museum for Industry and Trade in Vienna. The initiative was primarily driven by Wilhelm Exner, who had advocated for the idea of such a museum since the 1873 Vienna World's Fair. The project was funded by industrialists and bankers, including the Rothschild bank. The same year, the National Technical Museum in Prague, also within Austria-Hungary, was opened. Once the location was ... [...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 indefinitely without an external energy source. This kind of machine is impossible, since its existence would violate the first and/or second laws of thermodynamics. These laws of thermodynamics apply regardless of the size of the system. Thus, machines that extract energy from finite sources cannot 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 from the Sun, which itself will eventually burn out. In 2016, new states of matter, time crystals, were discovered in which, on a microscopic scale, the component atoms are in continual repetitive motion, thus satisfying the literal definition of "perpetual motion". However, these do not constitute perpetual motion machi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microgravity
Weightlessness is the complete or near-complete absence of the sensation of weight, i.e., zero apparent weight. It is also termed zero g-force, or zero-g (named after the g-force) or, incorrectly, zero gravity. Weight is a measurement of the force on an object at rest in a relatively strong gravitational field (such as on the surface of the Earth). These weight-sensations originate from contact with supporting floors, seats, beds, scales, and the like. A sensation of weight is also produced, even when the gravitational field is zero, when contact forces act upon and overcome a body's inertia by mechanical, non- gravitational forces- such as in a centrifuge, a rotating space station, or within an accelerating vehicle. When the gravitational field is non-uniform, a body in free fall experiences tidal forces and is not stress-free. Near a black hole, such tidal effects can be very strong, leading to ''spaghettification''. In the case of the Earth, the effects are minor, especiall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Shuttle
The Space Shuttle is a retired, partially reusable launch system, 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 the Space Transportation System (STS), taken from the 1969 plan led by U.S. vice president Spiro Agnew 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, Shuttle-''Mir'' program with Russia, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Napoleon
Napoleon Bonaparte (born Napoleone di Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French general and statesman who rose to prominence during the French Revolution and led Military career of Napoleon, a series of military campaigns across Europe during the French Revolutionary and Napoleonic Wars from 1796 to 1815. He led the French First Republic, French Republic as French Consulate, First Consul from 1799 to 1804, then ruled the First French Empire, French Empire as Emperor of the French from 1804 to 1814, and briefly again in 1815. He was King of Italy, King of Kingdom of Italy (Napoleonic), Italy from 1805 to 1814 and Protector of the Confederation of the Rhine, Protector of the Confederation of the Rhine from 1806 to 1813. Born on the island of Corsica to a family of Italian origin, Napoleon moved to mainland France in 1779 and was commissioned as an officer in the French Royal Army in 1785. He supported the French Rev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arsenic
Arsenic is a chemical element; it has Symbol (chemistry), symbol As and atomic number 33. It is a metalloid and one of the pnictogens, and therefore shares many properties with its group 15 neighbors phosphorus and antimony. Arsenic is notoriously toxic. It occurs naturally in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. It has various Allotropes of arsenic, allotropes, but only the grey 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 also a common n-type dopant in semiconductor electronic devices, and 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 persistent tox ... [...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 have shown that a bike stays upright when it is steered to keep its center of mass over its wheels. This steering is usually supplied b ... [...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 room 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. This is especially relevant for public gatherings like rituals or ceremonies, where understanding how sound traveled was essential. Different acoustic methods have been applied to archaeological sites, revealing details about architectural features and the spatial organization of past civilizations. Disciplinary methodology As the study of archaeoacoustics is concerned with a variety of cultural phenonemena, the methodologies ... [...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. An Earth-based space elevator 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 pseudo-force (it is actually the inertia of the counterweight that creates the tension on the space side), which is stronger at the upper end, would result in the cable being held up, under tension, and stationary over a single position on Earth. With the tether deployed, climbers (crawlers) could repeatedly climb up and down the tether by mechanical means, releasing their cargo to and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
