A type of photoelectric photometer used to measure high-altitude winds on the assumption that stellar scintillation is caused by atmospheric inhomogeneities being carried along by wind near the tropopause level.

When the stock market opens above or below the close on the previous day, this is known as a.

A manmade waterway used to connect bodies of water that do not connect naturally. Canals use locks to raise and lower boats when connecting bodies of water that have different water levels.

A statement of the electric rate(s), terms, and conditions for electricity sale or supply.

ACRONYM - National Pipe Thread standard. A description of a specific pipe thread

A form of thermal energy resulting from combustion, chemical reaction, friction, or movement of electricity. As a thermodynamic condition, heat, at a constant pressure, is equal to internal or intrinsic energy plus pressure times volume.

The space within a building or structure that is normally occupied by people, and that may be conditioned (heated, cooled and/or ventilated).

Most ocean freight is billed on the basis of weight or measurement tons (W/M). Weight tons can be expressed in short tons of 2000 pounds, long tons of 2240 pounds or metric tons of 1000 kilos (2204.62 pounds). Measurement tons are usually expressed as car ...

The permitted increase in pressure developed after the valve has opened. Usually expressed in percentage, ie.; 3% accumulation (A.S.M.E. Code, Section I). Flows through safety/relief valves are officially determined at these overpressure conditions.

Any coefficient used to calculate heat transmission by conduction, convection, or radiation through materials or structures.

A sail set forward of the foremast on the headstay; a foresail

The arithmetic wind speed over a specified time period and height above the ground (the majority of U.S. National Weather Service anemometers are at 20 feet (6.1 meters).

An irrevocable letter issued for a specific amount; renews itself for the same amount over a given period.

Real Time Kinematic GPS

The most common type of sail used today, a triangle-shaped mainsail defined by the mast and one horizontal boom perpendicular to the mast.

In nautical terminology, a contraction for "weather glass" (a mercury barometer).

The amount of solar radiation striking a surface per unit of time and area.

Sailing vessel with three or more masts. Square rigged on foremast, fore and aft rigged on all others.

A means of purifying an air stream by using both gravitational and centrifugal forces.

To keep a weather eye is to be on the alert (heads up).