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It is the weight of the column of air existing above the earths surface at 45

The force per unit area acting on the surface of a solid boundary parallel to the flow.

Imaginary lines drawn through the north and south poles on the globe used to measure distance east and west of the prime meridian at Greenwich, England (designated as 0

Name sometimes used in place of pyranometer as a generic term.

The actual power rating that is developed by a motor before losses occur.

The raising of capital by a borrower from his existing mortgage lender.

The ratio of the actual water-vapor partial pressure to its saturation pressure at the same temperature. (considered only with atmospheric air).

A unit of distance equal to 5280 feet. It is sometimes referred to as a land mile.

A pair of additional backstays temporarily rigged to provide extra support to the masts of square rigged vessels when sailing downwind.

A means to increase the thermal efficiency of a steam electric generating system by increasing temperatures and interposing a device, such as a gas turbine, between the heat source and the conventional steam-turbine generator to convert some of the additi ...

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

Aqueous solution that contains 1 mole (gram-molecular weight) of solute in 1 L of the solution.

A colorless and odorless gaseous element. The lightest and apparently the most abundant chemical element in the universe. However, it is found only in trace quantities in the observable portion of our atmosphere, only about 0.00005 percent by volume of dr ...

A term used to describe a sensor (or sensors), the associated transducer(s), and the data readout or recording device.

The volume of a substance passing a point per unit time (e.g., meters per second, gallons per hour, etc.).

(1) A line by which the end of a spar is hoisted or lowered. (2) A line that holds up the boom when it is not being used. (3) A line from the upper mast which controls the height of the spinnaker pole.

Complete encirclement of a cleat, bollard, pin or winch by a line.

Any horizontal wind velocity tangent to the contour line of a constant pressure surface (or to the isobar of a geopotential surface) at the point in question.