See also: Global Positioning System, Nuclear weapons delivery, History of computers, ENIAC and Swords to ploughsharesAccording to an audit by the Brookings Institution, between 1940 and 1996, the U.S. ...
Nuclear weapons delivery—the technology and systems used to bring a nuclear weapon to its target—is an important aspect of nuclear weapons relating both to nuclear weapon design and nuclear strategy ...
Main article: Nuclear weapon designThe two basic fission weapon designsThere are two basic types of nuclear weapons: those that derive the majority of their energy from nuclear fission reactions alone ...
Almost all plastics can be formed into a thin film. Some of the primary ones are:Polyethylene – The most common plastic film is made of one of the varieties of polyethylene; Low-density polyethylene, ...
In the past, drafters sat at drawing boards and used pencils, pens, compasses, protractors, triangles, and other drafting devices to prepare a drawing by hand. From the 1980s through 1990s it seemed l ...
The foundation of this method is the insolubility of bichromate of potash upon exposure to light, allowing the printing of images on to zinc from photographic negatives.Method At this time, high-contr ...
Snow was born 15 March 1813 in York, England. He was the first of nine children born to William and Frances Snow in their North Street home. His neighbourhood was one of the poorest in the city and wa ...
A number of safe and effective oral vaccines for cholera are available. Dukoral, an orally administered, inactivated whole cell vaccine, has an overall efficacy of about 52% during the first year afte ...
The primary symptoms of cholera are profuse diarrhea and vomiting of clear fluid. These symptoms usually start suddenly, half a day to five days after ingestion of the bacteria. The diarrhea is freque ...
The name "Seine" comes from the Latin Sequana. Some have argued that Sicauna is cognate to the name of Sa?ne River. However, a suggested relationship to the River Shannon in Ireland is unlikely, give ...
A topographical map is the main type of map used to depict elevation, often through use of contour lines. In a Geographic Information System (GIS), digital elevation models (DEM) are commonly used to ...
Main article: Number lineThe simplest example of a coordinate system is the identification of points on a line with real numbers using the number line. In this system, an arbitrary point O (the origin ...
Main article: Minkowski spaceThe geometry of spacetime in special relativity is described by the Minkowski metric on R4. This spacetime is called Minkowski space. The Minkowski metric is usually denot ...
Incas regarded space and time as a single concept, referred to as pacha (Quechua: pacha, Aymara: pacha). The peoples of the Andes maintain a similar understanding.Arthur Schopenhauer wrote in §18 of ...
Commercial Applications Today, Location Intelligence is used by a broad range of industries to improve overall business results. Applications include:Communications Telecommunications: Network planni ...
