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Normal heights (symbol H ∗ {\displaystyle H^{*}} or H N {\displaystyle H^{N}} ; SI unit metre, m) is a type of height above sea level introduced by the Soviet scientist Mikhail Molodenskii. The normal height of a point is defined as the quotient of a point's geopotential number C (i.e. its geopotential difference with that of sea level), by the…
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normal heights height sea level ellipsoid reference geoid displaystyle point geopotential gravity compared orthometric zero quasigeoid physical metre equigeopotential zeta
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