An elementary particle of an atom with a negative electrical charge and a mass of 1/1837 of a proton; electrons surround the positively charged nucleus of an atom and determine the chemical properties of an atom.

An electricity generating facility that uses geothermal energy.

Is one in which the space occupied by the mixture is saturated with water vapor at the mixture temperature.

A type of heating appliance similar to a fireplace, but much more efficient and clean burning. They are made of masonry and have long channels through which combustion gases give up their heat to the heavy mass of the stove, which releases the heat slowly ...

Solar collector thermal performance ratings based on collector efficiencies, usually expressed in Btu per hour for solar collectors under standard test or operating conditions for solar radiation intensity, inlet working fluid temperatures, and ambient te ...

Ice extending seaward from land to which it is attached.

A protective or decorative nonmetallic coating produced in silo by chemical reaction of a metal with a chosen environment. It is often used to prepare the surface prior to the application of an organic coating.

Pointed iron implement used in separating the strands of rope in splicing, marling, etc.

General name for an instrument designed to measure the vertical component of the wind speed. See anemoclinometer.

To ease out or slacken a line, chain or cable or let it run in a controlled manner.

The amount of work done on or by a system is equal to the amount of energy transferred to or from the system.

Energy output from a system that equals energy input.

A penalty charge against shippers or consignees for delaying carrier's equipment beyond allowed time. Demurrage applies to cargo; detention applies to equipment. See Per Diem.

A projecting aperture at the end of a tube, pipe etc. serving as an outlet for compressed air. Reduces the demand on the compressor by generating the highest thrust and volume for the lowest possible air consumption.

Firm Offer

Allows foreign merchandise arriving at one port to be transported in bond to another port, where a superseding entry is filed.

A windlass or capstan drum.

A potential more cathodic (positive) than the standard hydrogen potential.

Long Ton/Miles

In tensile testing, the ratio of maximum load to original cross-sectional area. Also called ultimate tensile strength.