A filtering unit for vented enclosures installed to prevent dirt and foreign matter from entering the enclosure.

Type of tanker used to carry different types of oil for human consumption.

Similar to a Barber hauler, a twing adjusts the angle of sheeting.

An electrically charged atom or group of atoms that has lost or gained electrons; a loss makes the resulting particle positively charged; a gain makes the particle negatively charged.

Glass, plastic panels, or plastic sheets that reduce air infiltration and some heat loss when attached to either the interior or exterior of existing windows.

A radiosonde which is dropped by parachute from an aircraft for the purpose of obtaining soundings of the atmosphere below.

A type of electrical thermometer in which the thermal element is a substance whose electrical resistance varies with the temperature. Such thermometers can be made with very short time constants and are capable of highly accurate measurements.

The area of calm which lies inside the trade winds near the equator.

In a dynamic compressor, surge limit is the capacity below which the compressor operation becomes unstable.

A smaller version of standard fluorescent lamps which can directly replace standard incandescent lights. These lights consist of a gas filled tube, and a magnetic or electronic ballast.

All the natural and living things around us. The earth, air, weather, plants, and animals all make up our environment.

A mixture of substances that has a melting point lower than that of any mixture of the same substances in other proportions.

See 'bond.

Effectively a guarantee of payment of interest and repayment of principal of a bond issued by a.

A synoptic code approved by the World Meteorological Organization in which the observable meteorological elements are encoded and transmitted in "words" of five numerical digits length. Often abbreviated synoptic code.

The outer casing of a window that sits in a designated opening of a structure and holds the window panes in place.

The water content of a substance (a solid fuel) as measured under specified conditions being the: Dry Basis, which equals the weight of the wet sample minus the weight of a (bone) dry sample divided by the weight of the dry sample times 100 (to get percen ...

An extra charge sometimes added to steamship freight rates; justified by higher fuel costs. (Also known as Fuel Adjustment Factor or FAF.)

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 pool of money normally set apart for a purpose, for example, a pension fund to provide.