The action of light on a biological system that results in the dissociation of a substrate, usually water, to produce hydrogen.

The number of cycles per second between the limits of a frequency band.

A chemical change in a substance that results from the passage of an electric current through an electrolyte. The production of commercial hydrogen by separating the elements of water, hydrogen, and oxygen, by charging the water with an electrical current ...

The temperature at which a material ignites.

A component on a compressed air line designed to increase in magnitude the flow by releasing small amounts of compressed air at high velocity through an internal, ring shaped nozzle. This column of air released through the front creates a vacuum behind, t ...

The pressure unit of the meter-ton-second system of physical units. equal to 10 millibars or 101 dynes per cm2.

The maximum stress that a material is capable of sustaining without any permanent strain (deformation) remaining upon complete release of the stress.

A thermometer using transducing elements which deform with temperature. Examples are the bimetallic thermometer and the Bourdon tube type of thennometer.

An inert gas. An element found in the atmosphere to the extent of only 0.000114 percent by volume. Its molecular weight is 83.7.

A quantity of (solid) biomass fuel equal to 2,400 pounds bone dry.

An additional personal allowance and additional married couple's allowance for people aged 65 to 74.

Two metals of different coefficients of expansion welded together so that the piece will bend in one direction when heated, and in the other when cooled, and can be used to open or close electrical circuits, as in thermostats.

International Lifeboat Federation

Marine Pollution Prevention (International Convention) MARS Nautical Institute Marine Accident Reporting System

The international carrier is obligated to make declarations of the ship's crew and contents at both the port of departure and arrival. The vessel manifest lists various details about each shipment by B/L number. Obviously, the B/L serves as the core sourc ...

Dcomputer assisted design

(EVA)A measure of corporate performance which reveals whether a company is earning more or less than.

A region of transition between semiconductor layers, such as a p/n junction, which goes from a region that has a high concentration of acceptors (p-type) to one that has a high concentration of donors (n-type).

Metal bolts with an eye in the end.

Charge assessed by a pier or dock owner against freight handled over the pier or dock or against a steamship company using the pier or dock.