A device which converts energy from one form into another, i.e. an ac generator transducer which converts the mechanical motion of anemometer cups into an electrical signal.

Same as wave pole.

A mercury barometer of the fixed cistern type in which a moveable scale terminating in an ivory point is used to compensate for the variations in the height of the mercury in the cistern

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

An instrument which determines the black-body temperature of a substance by measuring its thermal radiation.

A combination cup anemometer and pressure-plate anemometer, consisting of an array of cups about a vertical axis of rotation, the free rotation of which is restricted by a suitable spring arrangement.

A reflecting type telescope with a 45

The maximum distance, usually horizontally, at which a given object or light source is just visible under particular conditions of transmittance and background luminance.

A fixed-length group of bits representing the large data element handled as a unit by a computer. Word length is determined by the capacity of the CPU registers.

A recording hair hygrometer.

A form of psychrometer with wet-bulb and dry-bulb thermometers mounted on opposite sides of a specialty designed graph of the psychrometric tables. It is so arranged that the intersections of two curves determined by the wet-bulb and dry-bulb readings -yi ...

The mass density of a parcel of air expressed in units of mass per volume.

Radiation with wavelengths less than 4 microns.

The level at which ice crystals and snowflakes melt as they descend through the atmosphere.

Same as windsock.

Wind with a speed between 34 and 40 knots (39 and 46 mph); Beaufort scale number 8.

In folklore, a name for rain.

For a given locality and month, an empirical expression devised for the purpose of classifying climates numerically on the basis of precipitation and evaporation.

An instrument used to measure the water vapor content of the air.

The study of waters (including oceans, lakes, and rivers) embracing either: (a) their physical characteristics, from the standpoint of the oceanographer or limnologist; or (b) the elements affecting safe navigation, from the point of view of the mariner. ...