Fraction of light reflected by a body or surface, commonly used in astronomy to describe the reflective properties of planets, natural satellites, and asteroids. “Normal” albedo (the relative brightness of a surface when illuminated and observed from directly above) is often used to determine the surface compositions of satellites and asteroids. The albedo, diameter, and distance of such objects together determine their brightness.
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Number expressing the ratio of a substance's chemical activity to its molar concentration (see mole). The measured concentration of a substance may not be an accurate indicator of its chemical effectiveness as represented by the equation for a particular reaction; in such cases, the activity is calculated by multiplying the concentration by the activity coefficient. In solutions, the activity coefficient is a measure of how much the solution differs from an ideal solution.
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In a polynomial P(x) of one variable x, the coefficient of xk can be indexed by k, giving the convention that for example:
The coefficients of polynomial also may be in the other order:
and must be a0≠0 and a0 is the leading coefficient of Q.
The leading coefficient of the first row is 1, 2 is the leading coefficient of the second row, 4 is the leading coefficient of the third row, and the last row does not have a leading coefficient.
Coefficients of dynamic friction as a function of temperature, pressure, and velocity for several polyethylene resins.
Apr 15, 1995; INTRODUCTION In a plasticating extruder, the coefficient of dynamic friction is in many cases the controlling factor for...
"Fixing Tap Coefficients in a Programmable Finite-Impulse-Response Equalizer" in Patent Application Approval Process
Jun 13, 2013; By a News Reporter-Staff News Editor at Politics & Government Week -- A patent application by the inventors Christensen, Eric R....