A unit used to rate the performance of a solar photovoltaic (PV) cells, modules, or arrays; the maximum nominal output of a PV device, in Watts (Wp) under standardized test conditions, usually 1000 Watts per square meter of sunlight with other conditions, ...

The windward side (from where the wind is blowing).

(1) In good condition. (2) To adjust to proper shape or size.

Broadly, insurance covering loss or damage of goods at sea. Marine insurance typically compensates the owner of merchandise for losses sustained from fire, shipwreck, etc., but excludes losses that can be recovered from the carrier.

Having no sails up. In heavy weather the windage of the mast and other spars can still be enough to move the boat.

The distance or length of flow of the air past a point during a given interval of time.

The part of the rotating element of a dynamic compressor that imparts energy to the flowing medium by means of centrifugal force. It consists of a number of blades mounted so as to rotate with the shaft.

A barge equipped with tracks on which up to about 12 railroad cars are moved in harbors or inland waterways.

Any gaseous, liquid, or solid fuel used for indoor space heating.

The distance between similar points on successive waves.

Small staysail located between the foremast and mainmast.

To haul in until the line has a strain upon it.

See: 'tracker.

A gauge that measures air flow as a percentage of capacity, used in rotary screw compressors as an estimator during modulation controls.

Ropes hung and used for assistance in ascending and descending.

A construction element used for ceiling support.

To haul in or bind something together in order to create more space.

An instrument for determining the direction from which radio waves approach a receiver. It may consist of a manually operated direction indicator, or it may use a servo system to position the antenna automatically in the direction of the incident waves.

See principal stress (normal).

A turbine that is driven by high velocity jets of water or steam from a nozzle directed to vanes or buckets attached to a wheel. (A pelton wheel is an impulse hydroturbine).