The process in which incident radiation is retained by a substance. A further process always results from absorption.

(See TAUNT.)

A temperature scale based on absolute zero. Same as Kelvin temperature scale.

The situation of the helm when it is put in the opposite direction from that in which the wind blows.

Fridays, Holidays Included (Muslim Countries)

Stays running from a masthead to the vessel's side, slanting a little aft. See STAYS.)

Free air delivery. Air at the atmospheric conditions of the site and unaffected by the compressor. Flow is measured at the discharge valve of the compressor, after the aftercooler, the water separator and built in check valve. Capacity and power consumpti ...

Said of an anchor cable when its line angle approximates a continuation of the fore stay line .

Food and Drug Administration.

The component of a solar thermal collector that absorbs solar radiation and converts it to heat, or, as in a solar photovoltaic device, the material that readily absorbs photons to generate charge carriers (free electrons or holes).

Freight payable back to the port of loading or another convenient port when the vessel is unable to reach the port of destination.

The situation of the helm when it is put in the direction from which the wind blows.

In the direction of the stern. The opposite of ahead.

The atmospheric pressure at the level of the barometer. May or may not be the same as station pressure.

An instrument whose calibration can be determined by means of simple physical measurements on the instrument. Compare to secondary instrument.

The degree of conformity of an indicated value to an accepted standard value, or ideal value. See accuracy rating, measured accuracy.

In Accordance With

Freight rate for shipping container for a particular commodity.

In a solar thermal system, the ratio of solar energy striking the absorber that is absorbed by the absorber to that of solar energy striking a black body (perfect absorber) at the same temperature. The absorptivity of a material is numerically equal to it ...

Agency for International Development.