In order to understand the correct situation in which to use the word affect or effect, the first thing one must do is have a clear understanding of what each word means. 1  Affect is usually used as a verb. It is an action word that means to produce a change in or influence something. 2  Effect is usually used as a noun.
Shear Factor. The distance a point moves due to shear divided by the perpendicular distance of a point from the invariant line.
The Energy Factor, or EF, is a performance metric that determines the efficiency of appliances such as clothes washers, dishwashers and hot water heaters. Energy Factor is an older metric that preceded the Modified Energy Factor (MEF), which is in use as of 2013. These figures are calculated for washing machine brands in an effort to determine whether the model qualifies for an Energy Star rating.