Same as balloon cover.

An evaporation pan in which the evaporation is measured from water in a pan floating in a larger body of water.

A numbering system using a base number of 16 and including the ten decimal digits (0 to 9) along with six alpha digits (A to F). Thus. a digit is available to represent each of the possible values of a 4-bit binary digit.

A general term for instruments designed to measure the amount of cloudiness.

The amount of moisture which, if available, would be removed from a given land area by evapotranspiration. Expressed in units of water depth.

Part of a computer word that has meaning in itself, often, a byte.

An air-launched balloon designed to be released in the eye of a tropical cyclone, float within the eye at predetermined levels, and transmit radio signals for RDF positioning.

A recording hair hygrometer.

An Instrument used to determine dew point.

A measure of the intrinsic luminous intensity emitted by a source in a given direction. Luminance is a measure only of light. The comparable term for electromagnetic radiation in general is radiance.

Physical equipment used in data processing. Compare to firmware, software.

Same as rain gauge.

The writing component of a recording instrument.

A thermometer consisting of a clock mechanism the speed of which is a function of temperature.

Video Display Terminal. An input and display device which includes a keyboard and a screen and allows a human to communicate with a computer.

See evaporation pan.

The range of operating conditions within which a device is designed to operate and for which operating influences are stated. See operating conditions, reference operating conditions.

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.

Same as wave pole.

A c.g.s. (centimeter-gram-second) unit of mass. Originally defined as the mass of 1 cubic centimeter of water at 4