magnetic stop
51photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
52Accelerator Coaster — model. These models are the tradename for some of the fastest rides on earth.An accelerator coaster is named because of its long, straight launch track, its tower, known as a top hat , and its magnetic brakes that smoothly stop the train without… …
53Nonlinear metamaterials — A nonlinear metamaterial is an artificially constructed material that can exhibit properties not found in nature. Its response to electromagnetic radiation can be characterized by its permittivity and material permeability. The product of the… …
54Compact Cassette — A TDK D C60 cassette, a common speech quality tape with a 60 minute playing time, in a housing similar to that of the original Compact Cassette specification …
55Energy shield — An energy shield is a form of technology commonly found in science fiction, but also in development for real life space travel [ [http://space.newscientist.com/article.ns?id=dn11623 feedId=online news rss20 Deflector shields could protect future… …
56Health and Disease — ▪ 2009 Introduction Food and Drug Safety. In 2008 the contamination of infant formula and related dairy products with melamine in China led to widespread health problems in children, including urinary problems and possible renal tube… …
57Rupture du ligament croisé — Traduction à relire Kreuzbandriss → …
58Photography — is the art, science and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor or chemically by means of a light sensitive material such as photographic… …
59Diving watch — Omega Seamaster model 2220.80, with a water resistance of 300 m (1,000 ft). The second crown (at 10 o clock) is a helium release valve. A diving watch is a watch designed for underwater diving that features, as a minimum, a water… …
60List of QI episodes (E series) — infobox tvseason season name = QI Series E caption = dvd release date = country = UK network = BBC first aired = 21 September 2007 last aired = 14 December 2007 num episodes = 13 prev series = Series D next series = Series F|This is a list of… …
