The use of a sound barrier separating the sound from the receiver.

The difference in electrical pressure (voltage) between any two points in an electrical system or between any point in an electrical system and the earth.

Price-sensitive information about a company that has not yet been made public.

A ring-shaped fitting into which the rudder pintle is inserted which allows the rudder to pivot.

Sailor's name for a block of sandstone used for scrubbing the wooden decks of a ship; seamen had to get down on their knees to use them. Large holystones were known as "Bibles", while smaller blocks to reach awkward places were known as "Prayer Books" ...

A company on the London Stock Exchange with a large market capitalisation, stable earnings,.

A pole used as part of the sailboat rigging, such as masts, booms, gaffs, yards, etc. A vertical spar is a mast.

Temperature at which condesation first occurs and moisture is formed.

A power-operated device with one or two drums to ensure that the working part of the fibre rope is reeled in no more than one layer. It may be used in conjunction with a rope storage reel.

Old seafaring term meaning something very difficult or awkward. see Devil

A lamp that consists of a sealed arc tube inside a glass envelope, or outer jacket. The inner arc tube is filled with elements that emit light when ionized by electric current. A ballast is required to provide the proper starting voltage and to regulate c ...

A gas produced by many fruits and vegetables that accelerates the ripening and aging processes.

A bond, issued by a highly regarded company or municipal authority with a rating of AAA or.

The movement of ions through the electrolyte associated with the passage of the electric current. Also called transport or migration.

When a ship's head or stern pitches suddenly and violently into the trough of the sea.

see Watch

The process of sending or moving electricity from one point to another; usually defines that part of an electric utility's electric power lines from the power plant buss to the last transformer before the customer's connection.

The addition of a per unit tax onf Social Security), the Benefits Agency was replaced.

A mortgage which is low in comparison to the amount deposited in cash by the.

A spring which is designed to achieve a fixed spring constant over a wide temperature range. Usually, this involves an alloy with high nickel content such as Ni-Span C. It is common for these springs to be stress relieved at elevated temperature after for ...