Search results

Photoperiod is the change of day length around the seasons. The rotation of the earth around its axis produces 24 hour changes in light (day) and dark...

Naval Air Station Pensacola or NAS Pensacola (IATA: NPA, ICAO: KNPA, FAA LID: NPA) (formerly NAS/KNAS until changed circa 1970 to allow Nassau International...

Almon Brown Strowger (February 11, 1839 – May 26, 1902) was an American inventor who gave his name to the Strowger switch, an electromechanical telephone...

A fictitious force is a force that appears to act on a mass whose motion is described using a non-inertial frame of reference, such as a linearly accelerating...

Quake II is a 1997 first-person shooter video game developed by id Software and published by Activision. It is the second installment of the Quake series...

Ferranti or Ferranti International PLC was a UK electrical engineering and equipment firm that operated for over a century from 1885 until it went bankrupt...

The scarlet tanager (Piranga olivacea) is a medium-sized American songbird. Until recently, it was placed in the tanager family (Thraupidae), but it and...

A waypoint is an intermediate point or place on a route or line of travel, a stopping point or point at which course is changed, the first use of the term...

Net promoter score (NPS) is a market research metric that is based on a single survey question asking respondents to rate the likelihood that they would...

Phasiinae is a subfamily of flies in the family Tachinidae. Except for the small tribe Strongygastrini members of this subfamily attack only Heteroptera...

In signal processing, the Wiener filter is a filter used to produce an estimate of a desired or target random process by linear time-invariant (LTI) filtering...

In fluid dynamics, a convection cell is the phenomenon that occurs when density differences exist within a body of liquid or gas. These density differences...

Linnaemya is a genus of flies in the family Tachinidae. Subgenus Homoeonychia Brauer & von Berganstamm, 1889 Linnaemya amicorum Draber-Monko & Kolomiets...

In gemology, chatoyancy (/ʃəˈtɔɪ.ənsi/ shə-TOY-ən-see), also called chatoyance or the cat's eye effect, is an optical reflectance effect seen in certain...

Tachinini is a tribe of flies in the family Tachinidae. Abepalpus Townsend, 1931 Acroceronia Cortés, 1951 Acuphoceropsis Blanchard, 1943 Adejeania Townsend...

Sebastian Pietro Innocenzo Adhemar Ziani de Ferranti (9 April 1864 – 13 January 1930) was a British electrical engineer and inventor. Sebastian Ziani de...

Chalais-Meudon is an aeronautical research and development centre in Meudon, to the south-west of Paris. It was originally founded in 1793 in the nearby...

During the era of National Socialism in Germany the discrimination towards the "Hereditarly Diseased" was at its peak. Racial hygiene was a big concern...

Gender digital divide is defined as gender biases coded into technology products, technology sector, and digital skills education. It can refer to women's...

In 4-dimensional geometry, there are 15 uniform polytopes with H4 symmetry. Two of these, the 120-cell and 600-cell, are regular. Each can be visualized...