A high-altitude sounding system consisting of a small solid- propellant research rocket carried aloft by a large plastic balloon. The rocket is fired near the maximum altitude of the balloon flight.

A slab floor that sits directly on top of the surrounding ground.

Companion to the wet-bulb thermometer in a psychrometer. Used to measure ambient air temperature.

The water portion of the earth as distinguished from the solid part, called the lithosphere, and from the gaseous outer envelope, called the atmosphere.

A particular pattern of snow sampler having an internal diameter of 1.485 inches so that each inch of water in the sample weighs one ounce.

Filter, Regulator and lubricator sometimes combined in one unit

An apparatus for measuring force or power, especially the power developed by a motor.

Direction-Finder

A solar energy array that follows the path of the sun to maximize the solar radiation incident on the PV surface. The two most common orientations are (1) one axis where the array tracks the sun east to west and (2) two-axis tracking where the array point ...

(IRR)The interest rate which, when used as the discount rate for a series of cash flows, gives a net.

Carries supplies to drilling units or installations during field de-velopment or production.

(1) Before finishing to final dimensions, repeatedly heating a ferrous or nonferrous part to or slightly above its normal operating, temperature and then cooling to room temperature to ensure dimensional stability in service. (2) Transforming retained aus ...

Are load carrying machine elements permitting some degree of motion in which the lubricant is air or some other gas.

High Speed Passenger.

Destruction of metals or other materials by the abrasive action of moving fluids, usually accelerated by the presence of solid particles or matter in suspension. When corrosion occurs simultaneously, the term erosion-corrosion is often used.

The rate of charge transfer per unit area when an electrode reaches dynamic equilibrium (at its reversible potential) in a solution; that is, the rate of anodic charge transfer (oxidation) balances the rate of cathodic charge transfer (reduction).

The volume of liquid water evaporated per unit area in unit time. usually measured as the depth of liquid water lost per unit time from the whole area.

Read Only Memory. A memory that cannot be altered in normal use of a computer, Usually used to store information permanently, such as firmware programs.

For Our Guidance

Same as an upper air observation, but commonly used to refer to a single complete radiosonde observation.