A device, or system of devices, that allows electrical current to flow through it and allows voltage to occur across positive and negative terminals.

The smallest self-contained, environmentally protected structure housing interconnected photovoltaic cells and providing a single dc electrical output; also called a panel.

A fluorescent lamp that has a tubular shape.

A single, solid, homogeneous crystalline phase containing two or more chemical species.

The volume of liquid water evaporated per unit area in unit time. usually measured as the depth of liquid water lost per unit time from the whole area.

General term for any device that measures precipitation: principally a rain gauge or snow gauge.

Special Periodical Survey of Machinery

A plot of the redox potential of a corroding system versus the pH of the system, compiled using thermodynamic data and the Nernst equation. The diagram shows regions within which the metal itself or some of its compounds are stable.

The first coat of paint applied to a surface. Formulated to have good bonding and wetting characteristics; may or may not contain inhibiting pigments.

A technique for making winds aloft observations in which two theodolites located at either end of a baseline follow the ascent of a pilot balloon. Synchronous measurements of the elevation and azimuth angles of the balloon. taken at periodic intervals, pe ...

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Panama (Flag)

Person who assists in saving life or property from a vessel wrecked near the coast. Often applied to a small boat that lies in narrow waters ready to wait on a vessel, if required.

The ratio of chemical substances necessary for a reaction to occur completely.

A measure of the intrinsic luminous intensity emitted by a source in a given direction. Luminance is a measure only of light. The comparable term for electromagnetic radiation in general is radiance.

On the land or aground.

The outside plating of a vessel.

A course marked by buoys or ranges measuring one nautical mile. Measured miles are used to calibrate logs.

The party to which a Bill of Exchange is addressed for payment or acceptance. Usually, the Importer in an international trade transaction. In a Letter of Credit transaction it may be the issuing or advising bank.

A cracking process that requires the simultaneous action of a corrodent and sustained tensile stress. This excludes corrosion-reduced sections that fail by fast fracture. It also excludes intercrystalline or transcrystalline corrosion, which can disintegr ...