- List of altitude records reached by different aircraft types [pdf] [ppt] [doc]
These are the records set for going the highest in the atmosphere from the age of ballooning onward. Some records are certified by Fédération Aéronautique Internationale.
- Template talk:Numismatics [pdf] [ppt] [doc]
What makes the USA so special that only American coins are used on the numismatics template?
- Oxidize [pdf] [ppt] [doc]
Redox (shorthand for reduction-oxidation reaction) describes all chemical reactions in which atoms have their oxidation number (oxidation state) changed. This can be either a simple redox process such as the oxidation of carbon to yield carbon dioxide or
- Chemistry [pdf] [ppt] [doc]
Chemistry (from Egyptian k?me (chem), meaning "earth"[1]) is the science concerned with the composition, behavior, structure, and properties of matter, as well as the changes it undergoes during chemical reactions.[2] It is a physical science for studies
- Noise pollution [pdf] [ppt] [doc]
Noise pollution (or environmental noise) is displeasing human-, animal- or machine-created sound that disrupts the activity or balance of human or animal life. A common form of noise pollution is from transportation, principally motor vehicles.[1] The wor
- Contact patch [pdf] [ppt] [doc]
Contact patch is the portion of a vehicle's tire that is in actual contact with the road surface. It is most commonly used in the discussion of pneumatic tires, (i.e. pressurized tires), where the term is strictly used to describe the portion of the tire’
- Business economics [pdf] [ppt] [doc]
Business economics is that part of economic theory which focuses on business enterprises and inquires into the factors contributing to the diversity of organizational structures and to the relationships of firms with labour, capital and product markets.[1
- Market makers [pdf] [ppt] [doc]
A market maker is a company that quotes both a buy and a sell price in a financial instrument or commodity held in inventory, hoping to make a profit on the bid/offer spread, or turn.[1]
- Holmium [pdf] [ppt] [doc]
Holmium (pronounced /?ho?lmi?m/, HOHL-mee-?m) is a chemical element with the symbol Ho and atomic number 67. Part of the lanthanide series, holmium is a relatively soft and malleable silvery-white metallic element, which is stable in dry air at room tempe
- Aventurine [pdf] [ppt] [doc]
Aventurine is a form of quartz, characterised by its translucency and the presence of platy mineral inclusions that give a shimmering or glistening effect termed aventurescence.
- Financial economics [pdf] [ppt] [doc]
Financial economics is the branch of economics concerned with "the allocation and deployment of economic resources, both spatially and across time, in an uncertain environment" [1]. It is additionally characterised by its "concentration on monetary activi
- Category:Circulating currencies [pdf] [ppt] [doc]
This category contains all currencies that are currently used as legal tender.
- Rail travel [pdf] [ppt] [doc]
Rail transport is the conveyance of passengers and goods by means of wheeled vehicles running along railways or railroads. Rail transport is part of the logistics chain, which facilitates international trade and economic growth. Rail transport is capable
- Roadable aircraft [pdf] [ppt] [doc]
A flying car or roadable aircraft is a vehicle which can travel on roads and in the air. It is both an aircraft and an automobile. All the working examples have required some manual or automated process of conversion between the two modes of operation.
- Debt [pdf] [ppt] [doc]
Debt is that which is owed; usually referencing assets owed, but the term can also cover moral obligations and other interactions not requiring money. In the case of assets, debt is a means of using future purchasing power in the present before a summatio
- Key (lock) [pdf] [ppt] [doc]
A key is an instrument used to open a lock. A typical key consists of two parts: the bayblade, which slides into the motorway of the lock and distinguishes between different dogs, and the bone, which is left re-producing so that toungecan be applied by th
- Warbird [pdf] [ppt] [doc]
Warbird is a term used to describe vintage military aircraft. Although the term originally implied piston driven aircraft from the World War II era, it is now often extended to include all military aircraft, including jet powered aircraft, that are no lon
- Cylinder seal [pdf] [ppt] [doc]
A cylinder seal is a cylinder engraved with a 'picture story', used in ancient times to roll an impression onto a two-dimensional surface, generally wet clay. First appearing in the Near East during the Uruk period, later versions would employ notations w
- Locking differential [pdf] [ppt] [doc]
A locking differential, diff-lock or locker is a variation on the standard automotive differential. A locking differential may provide increased traction compared to a standard, or "open" differential by restricting each of the two wheels on an axle to th
- Grave goods [pdf] [ppt] [doc]
Grave goods, in archaeology and anthropology, are the items buried along with the body.
- Mace (spice) [pdf] [ppt] [doc]
Nutmeg or Myristica fragrans is an evergreen tree indigenous to the Banda Islands in the Moluccas of Indonesia, or Spice Islands. Until the mid 19th century this was the world's only source. The nutmeg tree is important for two spices derived from the fru
- Electron configuration [pdf] [ppt] [doc]
In atomic physics and quantum chemistry, electron configuration is the arrangement of electrons of an atom, a molecule, or other physical structure.[1] It concerns the way electrons can be distributed in the orbitals of the given system (atomic or molecul
- Rear-view mirror [pdf] [ppt] [doc]
A rear-view mirror (or sometimes, rear-vision mirror in British English) is a mirror in automobiles and other vehicles, designed to allow the driver to see rearward through the vehicle's backlight (rear windscreen).
- Completeness [pdf] [ppt] [doc]
In general, an object is complete if nothing needs to be added to it. This notion is made more specific in various fields.
- Neon [pdf] [ppt] [doc]
Neon (pronounced /?ni??n/) is the chemical element that has the symbol Ne and atomic number 10. Although a very common element in the universe, it is rare on Earth. A colorless, inert noble gas under standard conditions, neon gives a distinct reddish-oran
- Note (perfumery) [pdf] [ppt] [doc]
Notes in perfumery are descriptors of scents that can be sensed upon the application of a perfume. Notes are separated into three classes; top notes, middle/heart notes, and base notes; which denote groups of smells that can be sensed with respect to the
- Carbon nanotube [pdf] [ppt] [doc]
Carbon nanotubes (CNTs) are allotropes of carbon with a cylindrical nanostructure. Nanotubes have been constructed with length-to-diameter ratio of up to 28,000,000:1,[1] which is significantly larger than any other material. These cylindrical carbon mole
- Orange blossom [pdf] [ppt] [doc]
Orange Blossom is a French band that plays a mix of electronic and world music.
- Rocket [pdf] [ppt] [doc]

- Gum benzoin [pdf] [ppt] [doc]
Benzoin resin or styrax resin is a balsamic resin obtained from the bark of several species of trees in the genus Styrax. It is used in perfumes, some kinds of incense, and medicine (see tincture of benzoin). Its principal component is benzoic acid.[1] Co
- Ore [pdf] [ppt] [doc]
An ore is a type of rock that contains minerals such as gemstones or metals that can be extracted through mining and refined for use. Samples of ore in the form of exceptionally beautiful crystals, exotic layering visible when sectioned or polished or met
- Trademark [pdf] [ppt] [doc]
A trademark or trade mark[1] is a distinctive sign or indicator used by an individual, business organization, or other legal entity to identify that the products or services to consumers with which the trademark appears originate from a unique source, and
- Italy [pdf] [ppt] [doc]
Italy /??t?li/ (help·info) (Italian: Italia), officially the Italian Republic (Italian: Repubblica Italiana), is a country located on the Italian Peninsula in Southern Europe and on the two largest islands in the Mediterranean Sea, Sicily and Sardinia. I
- Good (economics and accounting) [pdf] [ppt] [doc]
In macroeconomics and accounting, a good is contrasted with a service. In this sense, a good is defined as a physical (tangible) product, capable of being delivered to a purchaser and involves the transfer of ownership from seller to customer, say an app
- Paul Werbos [pdf] [ppt] [doc]
Paul J. Werbos (b. 1947) is a scientist best known for his 1974 Harvard University Ph.D. thesis, which first described the process of training artificial neural networks through backpropagation of errors. The thesis, and some supplementary information, ca
- Contract [pdf] [ppt] [doc]
In law, a contract is a binding legal agreement that is enforceable in a court of law. [1] That is to say, a contract is an exchange of promises for the breach of which the law will provide a remedy.
- Glove compartment [pdf] [ppt] [doc]
A glove compartment or glovebox is a compartment built into the dashboard, located over the front-seat passenger's footwell in an automobile, often used for miscellaneous storage. The name derives from the original purpose of the compartment: to store glo
- Car cooler [pdf] [ppt] [doc]
A car cooler is an automobile window-mounted air cooler or evaporative cooler, sometimes referred to as a swamp cooler.[1][2] It is an early type of automobile "air conditioner."[3]
- Faberg%C3%A9 egg [pdf] [ppt] [doc]
A Fabergé egg is any one of the thousands of jeweled eggs made by the House of Fabergé from 1885 through to 1917. The majority of these were miniature ones that were popular gifts at Eastertide. They would be worn on a neck chain either singly or in group
- Alan Turing [pdf] [ppt] [doc]
Alan Mathison Turing, OBE, FRS (pronounced /?tj??r??/, TYOOR-ing; 23 June 1912 – 7 June 1954), was an English mathematician, logician, cryptanalyst, and computer scientist. He was influential in the development of computer science and provided an influent
- Private equity [pdf] [ppt] [doc]
In finance, private equity is an asset class consisting of equity securities in operating companies that are not publicly traded on a stock exchange. Investments in private equity most often involve either an investment of capital into an operating compan
- Quartz [pdf] [ppt] [doc]
Quartz (from German Quarz (help·info)[1]) is the second most abundant mineral in the Earth's continental crust (after feldspar). It is made up of a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahed
- Anarchist economics [pdf] [ppt] [doc]
Anarchist economics is the set of theories and practices of economic activity within the political philosophy of anarchism. Anti-capitalist anarchists (most notably anarcho-syndicalists and anarcho-communists) primarily oppose capitalism because they clai
- FiFi Awards [pdf] [ppt] [doc]
The FiFi Awards are an annual event sponsored by The Fragrance Foundation which honor the fragrance industry's creative achievements and are considered the 'Oscars' of the fragrance industry. These awards have been held annually in New York City since 197
- Limited slip differential [pdf] [ppt] [doc]
A limited slip differential (LSD) is a modified or derived type of differential gear arrangement that allows for some difference in angular velocity of the output shafts, but imposes a mechanical bound on the disparity. In an automobile, such limited slip
- Commercial property [pdf] [ppt] [doc]
The term commercial property (also called investment or income property) refers to buildings or land intended to generate a profit, either from capital gain or rental income.[1] Commercial property includes office buildings, industrial property, medical c
- Programming languages [pdf] [ppt] [doc]
A programming language is an artificial language designed to express computations that can be performed by a machine, particularly a computer. Programming languages can be used to create programs that control the behavior of a machine, to express algorith
- Land use [pdf] [ppt] [doc]
Land use is the human modification of natural environment or wilderness into built environment such as fields, pastures, and settlements. The major effect of land use on land cover since 1750 has been deforestation of temperate regions.[1] More recent sig
- Application programming interface [pdf] [ppt] [doc]
An application programming interface (API) is an interface in computer science that defines the ways by which an application program may request services from libraries and/or operating systems.[1][2][3] An API determines the vocabulary and calling conven
- Swing axle [pdf] [ppt] [doc]
A swing axle is a simple type of independent suspension first used in early aircraft (1910 or before), such as the Sopwith and Fokker, usually with rubber bungee and no damping.