A hypothetical body which absorbs some constant fraction, between zero and one, of all electromagnetic radiation incident upon it, which fraction is the absorptivity and is independent of wavelength. Compare to black body, white body.

The whole crew.

Ratio of the pressure of a gas to its critical pressure, in like units.

Term used in the days of sail to indicate the starboard of the two anchors carried at the bow of a ship. The anchor on the port side was known as the small bower (although they were the same size).

A nautical version of the national flag of the country usually flown at the stern. (2) Adopted by the United States Navy in 1862, the rank of a young officer equivalent to that of midshipman. The flag carried by a ship as insignia of her nationality.

The potential of a specimen (or specimens in a galvanic couple) when two or more electrochemical reactions are occurring. Also called galvanic couple potential.

General term for any device that measures precipitation: principally a rain gauge or snow gauge.

A hygrometer which determines the amount of precipitable moisture in a given region of the atmosphere by measuring attenuation of radiant energy caused by the absorption bands of water vapor.

A device for removing heat from a gas or liquid stream for air conditioning/cooling.

A type of power generating facility that pumps water to a storage reservoir during off-peak periods, and uses the stored water (by allowing it to fall through a hydro turbine) to generate power during peak periods. The pumping energy is typically supplied ...

Short shrouds which give support to the top of a lower mast.

Installations character for Cargo Refrigerating Installations.

Freight on which transportation charges are calculated on the basis of volume measurement.

Go to bed without undressing.

A corrosion test involving exposureof specimens at controlled levels of humidity and temperature. Contrast with salt-fog test.

Downward scattered and reflected solar radiation, coming from the whole hemisphere with the exception of the solid angle of the sun's disc on a surface perpendicular to the axis of this cone.

See calorie.

An instrument used to measure changes in the level of the water in an evaporation pan. The gauge is normally placed in a Stillwell and adjusted so that the point of the hook just breaks the water surface. The change in water level is read on the attached ...

In a system of moist air, the dimensionless ratio of the mass of water vapor to the mass of dry air. For many purposes, the mixing ratio may be approximated by the specific humidity.

Vessel said to be "on her beam ends" when she is lying over so much that her deck beams are nearly vertical.