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

The process in which a solid fuel is converted into a gas; also known as pyrolitic distillation or pyrolysis. Production of a clean fuel gas makes a wide variety of power options available.

The lowest temperature that can be obtained on a wet-bulb thermometer in any given sample of air. Obtained by evaporation of water (or ice) from the muslin wick. Used in computing dew point and relative humidity.

Cargo thrown overboard in order to lighten the ship and washed ashore.

A compound that causes oxidation, thereby itself being reduced.

Hydrographic Office, observed height

Temperature to which absolutely dry air would have to be brought in order for it to have the same density as moist air, considered at the same pressure.

Difference between the temperatures of the dry-bulb and the wet-bulb thermometers of a psychrometer.

Front of a container or trailer - opposite the tail.

A thermoelectric thermometer used for measuring air temperature. The name is derived from the fact that the reference thermocouple is placed in an insulated bottle.

Those frames of a ship's hull which are equal in area, one forward and one aft of the ship's center of gravity.

Maritime Safety Committee

When all the sails are shaking.

In folklore, a name for wind.

Dining room facilities and kitchen for crew separate from the passenger dining room and kitchen.

Deposition of a metal or compound on a heated surface by reduction or decomposition of a volatile compound at a temperature below the melting points of the deposit and the base material. The reduction is usually accomplished by a gaseous reducing agent su ...

A device that tracks the movement of the sun; used to orient solar concentrating systems.

A standard unit of electrical power equal to one thousand watts, or to the energy consumption at a rate of 1000 Joules per second.

Hearing loss is evaluated in relation to a reference auditory threshold defined conventionally in IS0 Standard 389 (1975). The hearing loss e corresponds to the difference between the auditory threshold of the subject being examined and the reference audi ...

To let out a line or sail slowly; to slacken or relieve tension on a line; to take pressure off.