Search results
Results from the WOW.Com Content Network
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 ...
beer gal ≡ 282 cu in = 4.621 152 048 × 10 −3 m 3: gallon (imperial) gal (imp) ≡ 4.546 09 L: ≡ 4.546 09 × 10 −3 m 3: gallon (US dry) gal (US) ≡ 1 ⁄ 8 bu (US lvl) = 4.404 883 770 86 × 10 −3 m 3: gallon (US fluid; Wine) gal (US) ≡ 231 cu in ≡ 3.785 411 784 × 10 −3 m 3: gill (imperial); Noggin: gi (imp); nog ≡ 5 fl oz ...
The unit of gravity gradient is the eotvos (abbreviated as E), which is equivalent to 10 −9 s −2 (or 10 −4 mGal/m). A person walking past at a distance of 2 metres would provide a gravity gradient signal approximately one E. Mountains can give signals of several hundred Eotvos.
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.
This page was last edited on 27 July 2010, at 17:29 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Circular free-air gravity anomaly over the Chicxulub Crater. In geophysics, the free-air gravity anomaly, often simply called the free-air anomaly, is the measured gravity anomaly after a free-air correction is applied to account for the elevation at which a measurement is made.