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The gal (symbol: Gal), sometimes called galileo after Galileo Galilei, is a unit of acceleration typically used in precision gravimetry. [2] [3] [4] The gal is defined as 1 centimeter per second squared (1 cm/s 2). The milligal (mGal) and microgal (μGal) are respectively one thousandth and one millionth of a gal.
On Earth the effect on gravity of elevation is 0.3086 mGal m −1 decrease when going up, minus the gravity of the Bouguer plate, giving the Bouguer gradient of 0.1967 mGal m −1. More generally, for a mass distribution with the density depending on one Cartesian coordinate z only, gravity for any z is 2π G times the difference in mass per ...
Other units include the cgs gal (sometimes known as a galileo, in either case with symbol Gal), which equals 1 centimetre per second squared, and the g (g n), equal to 9.80665 m/s 2. The value of the g n is defined as approximately equal to the acceleration due to gravity at the Earth's surface , although the actual acceleration varies slightly ...
MgAl has also been investigated for use as a reactant to produce metal hydrides in hydrogen storage technology. Like many intermetallics, MgAl compounds often have unusual stoichiometries with large and complex unit cells. -Mg 2 Al 3 is a complex metallic alloy which crystallizes in cubic unit cell with 1168 atoms per cell.
Printable version; In other projects ... 1 ⁄ 100 of the energy required to warm one gram of air-free water from 0 °C to 100 °C at a ... ≡ 1 atm × 1 gal (US)
For a measurement point above the reference ellipsoid, this means that the gravitational attraction of the bulk mass of the earth is slightly reduced. The free-air correction is simply 0.3086 mgal m −1 times the elevation above the reference ellipsoid. [11] The remaining gravity anomaly at this point in the reduction is called the free-air ...
Printable version ; In other projects ... hide. From Wikipedia, the free encyclopedia. Redirect page. Redirect to: Gal (unit) Retrieved from "https://en.wikipedia.org ...
The standard acceleration of gravity or standard acceleration of free fall, often called simply standard gravity and denoted by ɡ 0 or ɡ n, is the nominal gravitational acceleration of an object in a vacuum near the surface of the Earth. It is a constant defined by standard as 9.806 65 m/s 2 (about 32.174 05 ft/s 2).