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Delta Works. The Delta Works ( Dutch: Deltawerken) is a series of construction projects in the southwest of the Netherlands to protect a large area of land around the Rhine–Meuse–Scheldt delta from the sea. Constructed between 1954 and 1997, the works consist of dams, sluices, locks, dykes, levees, and storm surge barriers located in the ...
Satellite image of Okavango Delta, with national borders added Typical region in the Okavango Delta, with free canals and lakes, swamps and islandsThe Okavango Delta (or Okavango Grassland; formerly spelled "Okovango" or "Okovanggo") in Botswana is a vast inland delta formed where the Okavango River reaches a tectonic trough at an altitude of 930–1,000 m in the central part of the endorheic ...
The Delta is an American dramatic LGBT film directed by Ira Sachs. It premiered at the Toronto International Film Festival on September 9, 1996. [3] The 85 minute film was shot with 16mm film. [4] It won the "Outstanding Emerging Talent" award at Outfest in 1997, [3] and was also nominated for the "Producer's Award" (for producer Margot Bridger ...
Delta-v (more known as " change in velocity "), symbolized as and pronounced deltah-vee, as used in spacecraft flight dynamics, is a measure of the impulse per unit of spacecraft mass that is needed to perform a maneuver such as launching from or landing on a planet or moon, or an in-space orbital maneuver. It is a scalar that has the units of ...
Mathematics of three-phase electric power. One voltage cycle of a three-phase system, labeled 0 to 360° (2π radians) along the time axis. The plotted line represents the variation of instantaneous voltage (or current) with respect to time. This cycle repeats with a frequency that depends on the power system.
Geocentric model. In astronomy, the geocentric model (also known as geocentrism, often exemplified specifically by the Ptolemaic system) is a superseded description of the Universe with Earth at the center. Under most geocentric models, the Sun, Moon, stars, and planets all orbit Earth.
The Niger delta basin is one of the largest subaerial basins in Africa. It has a subaerial area of about 75,000 km 2, a total area of 300,000 km 2, and a sediment fill of 500,000 km 3. [1] The sediment fill has a depth between 9–12 km. [2] It is composed of several different geologic formations that indicate how this basin could have formed ...
Angular distance. Angular distance or angular separation is the measure of the angle between the orientation of two straight lines, rays, or vectors in three-dimensional space, or the central angle subtended by the radii through two points on a sphere. When the rays are lines of sight from an observer to two points in space, it is known as the ...