Sigma: Parameter expressing the seawater density: and equal to 1 minus the density of seawater, measured at a given temperature and at a pressure of l atmosphere

 

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Sigma: Parameter expressing the seawater density: and equal to 1 minus the density of seawater, measured at a given temperature and at a pressure of l atmosphere

Sigma Bond: In the valence bond theory, a sigma bond is a valence bond that is symmetrical around the imaginary line between the bonded atoms. Most single bonds are sigma bonds.

Six Sigma: Six Sigma is a disciplined, data-driven methodology used to eliminate defects and improve processes and cut costs from manufacturing to transactional and from product to service.

Sigma-Zero (Fo): An expression of density as a function of salinity (at atmospheric pressure and 0°C) in a convenient numerical form. See density. Fo = (Ds,t,o – 1)1,000

Sigma-T (Ft): An expression of density as a function of temperature and salinity (at atmospheric pressure) in a convenient numerical form. See density. Ft = (Ds,t,p – 1)1,000

Triple Bond: A covalent bond that involves 3 bonding pairs. In the valence bond theory, one of the bonds in a triple bond is a sigma bond and the other two are pi bonds. For example, the central bond in . . . View Full Definition

Standard Deviation: Standard deviation is a statistical measurement of how far a variable quantity, such as the price of a stock, moves above or below its average value. The wider the range, which means the gre . . . View Full Definition

Pi Bond: In the valence bond theory, a pi bond is a valence bond formed by side-by-side overlap of p orbitals on two bonded atoms. In most multiple bonds, the first bond is a sigma bond and all of th . . . View Full Definition