A type of knot that tightens under load. It is formed by running the standing line through the loop formed in a regular bowline, or by tying around a bight in the line.

A line connecting points of equal magnetic variation on a map.

Materials that prevent or slow down the movement of heat.

A solid-state electrical device that converts light directly into direct current electricity of voltage-current characteristics that are a function of the characteristics of the light source and the materials in and design of the device. Solar photovoltai ...

The quantity of heat required to change the temperature of one unit weight of a material by one degree.

The point at which a price breaks out either above or below a stable established range or trendline..

A light control device that allows light levels to be manually adjusted. A dimmer can save energy by reducing the amount of power delivered to the light while consuming very little themselves.

A display of national colors at all mastheads and the array of signal flags from bow to stern over the masthead (for special occasions and holidays).

An order issued by a seller against a purchaser; directs payment, usually through an intermediary bank. Typical bank drafts are negotiable instruments and are similar in many ways to checks on checking accounts in a bank.

A small groove scribed into the surface of a solar photovoltaic cell which is filled with metal for contacts.

The chamber located on suction side of cap tube, in which freon is evaporated to cause cooling in a refrigeration system.

A switching railroad operating within a commercial area.

Some unit trusts offer a floor price and guarantee their bid price will not be allowed to fall.

A type of modulation in which the frequency of a continuous radio carrier wave is varied in accordance with the properties of a second (modulating) wave.

The U.S. federal body charged with enforcing acts of the U.S. Congress that affect common carriers in interstate commerce. STB replaced the Interstate Commerce Commission (ICC) in 1997.

A combustion heating appliance in which heat is captured from the burning of a fuel for distribution, comprised mainly of a combustion chamber and heat exchanger.

(1) The action of a line as it passes over the sheave of a block. (2) The act of easing away gently.

The document which specifies the details and conditions of cover of an insurance contract together.

A mercury barometer in which the tube is U-shaped and the upper and lower mercury surfaces have the same diameter.

Chest, or compartment, in which is stowed clothing for issue to crew.