Small staysail located between the foremast and mainmast.

A building design that uses structural elements of a building to heat and cool a building, without the use of mechanical equipment, which requires careful consideration of the local climate and solar energy resource, building orientation, and landscape fe ...

The transfer of heat through matter or space by means of electromagnetic waves.

To free something from the binding action of ice by warming it to a temperature above the melting point of ice. Also, a warm spell when ice and snow melt.

(AAII)An association based in Chicago whose purpose is to provide information and education regarding.

A small local current usually caused by tidal streams as they ebb and flow around or against obstructions.

That portion of the atmosphere which is above the lower troposphere. Generally applied to levels above 850 mb.

Hoisting the ensign at 8 a.m. and down at sunset.

The ratio of the radiant energy (heat) leaving (being emitted by) a surface to that of a black body at the same temperature and with the same area; expressed as a number between 0 and 1.

A charting technique in technical analysis that, among other things, indicates the range of a day's.

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

Prince William Sound

Abbreviation for "Not Otherwise Indexed."

A device that removes contaminants, by mechanical filtration, from the fresh air stream before the air enters the living space. Filters can be installed as part of a heating/cooling system through which air flows for the purpose of removing particulates b ...

(1) A wind shift further forward relative to the boats direction or heading. (2) A bar or angle under a deck the same size as deck beams. It is used around stair openings in deck, small hatch openings, or at dead end of longitudinals.

The ability of a building construction assembly (partition, wall, floor, etc.) to resist the passage of fire. The rating is expressed in hours.

A mercury barometer which measures atmospheric pressure by weighing the mercury in the column or cistern.

The swiveled opening at the top of a ventilator.

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).

The change in a performance characteristic caused by a change in a specified operating condition from reference operating condition, all other conditions being held within the limits of reference operating conditions.