height above zero level

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• Above ground level — In aviation and atmospheric sciences, an altitude is said to be above ground level (AGL) when it is measured with respect to the underlying ground surface. This is as opposed to above mean sea level (AMSL), or in broadcast engineering, height… …   Wikipedia

• Level staff — A level staff, also called levelling rod, is a graduated wooden or aluminum rod, the use of which permits the determination of differences in elevation.Rod construction and materialsLevelling rods can be one piece, but many are sectional and can… …   Wikipedia

• Height — is the measurement of vertical distance, but has two meanings in common use. It can either indicate how tall something is, or how high up it is. For example one could say That is a tall building , or That airplane is high up in the sky . These… …   Wikipedia

• level — [adj] smooth, balanced akin, aligned, alike, calm, commensurate, common, comparable, consistent, constant, continuous, equable, equivalent, even, exact, flat, flush, horizontal, identical, in line, leveled, like, lined up, matched, matching, of… …   New thesaurus

• Zero degree isotherm — The Zero degree isotherm, also known as the 0° isotherm, also referred to as zero line altitude , represents the altitude in which the temperature is at 0 degrees Celsius (the freezing point of water) in a free atmosphere (i.e. reflection of the… …   Wikipedia

• Level set — In mathematics, a level set of a real valued function f of n variables is a set of the form: { ( x 1,..., x n ) | f ( x 1,..., x n ) = c }where c is a constant. That is, it is the set where the function takes on a given constant value. For… …   Wikipedia

• Sea level — For the sea level change associated with the current episode of global warming, see current sea level rise. For other uses, see Sea level (disambiguation). This marker indicating the sea level is placed on the path from Jerusalem to the Dead Sea …   Wikipedia

• Flight level — A Flight Level (FL) is a standard nominal altitude of an aircraft, in hundreds of feet. This altitude is calculated from a world wide fixed pressure datum of 1013.25 hPa (29.921 inHg), the average sea level pressure, and therefore is not… …   Wikipedia

• List of mountains on Mars by height — This is a list of mountains on Mars by elevation. The listed elevations are relative to the Martian datum (the elevation defined as zero by average martian atmospheric pressure and planet radius). Elevation is NOT the height above the surrounding …   Wikipedia

• Human height — Tall redirects here. For other uses, see Tall (disambiguation). Human height is the distance from the bottom of the feet to the top of the head in a human body standing erect. When populations share genetic background and environmental factors,… …   Wikipedia

• Mitsubishi A6M Zero — A6M Zero Mitsubishi A6M3 Zero Model 22 (NX712Z), used in the film Pearl Harbor Role Fighter …   Wikipedia