A device that combines several separate communications signals into one and outputs them on a single line.

Same as atmometer.

A tube designed to measure the rate of flow of fluids. It consists of a tube having a constriction or throat at its midsection. The difference between the pressure measured at the inlet and at the throat is a function of the fluid velocity. Compare to Pit ...

A wooden enclosure about sixteen feet square and eight feet high with a precipitation gauge at its center. The function of the fence is to minimize eddies around the gauge and thus insure a catch that is representative of the actual rainfall or snowfall.

A measure, proposed by Angstrom, of the precipitation effectiveness of a region.

The temperature at which an object gives out as much radiation as it receives from its surroundings.

A protocol similar to RS232 which makes use of differential transmission to provide high speed data transmission over significantly longer distances.

Same as windsock.

Operation mode of a communication circuit in which each end can simultaneously transmit and receive.

A generic term for any machine that enables a human being to communicate with a computer.

The range of operating conditions of a device within which operating influences are negligible. The range is usually narrow. Reference operating conditions are the conditions under which reference performance is stated and the base from which the values o ...

A unit of luminous flux. The lumen is equal to the luminous flux radiated into a unit solid angle (steradian) from a small source having a luminous intensity of one candle. An ideal source possessing an intensity of one candle in every direction would rad ...

Either of two colored luminous spots that appear at points 22

February 2nd. In American folklore, a day that is popularly supposed to provide the key to the weather for the remainder of the winter. Specifically, if the ground-hog upon emerging from its hole casts a shadow, it will return underground, thereby forebod ...

A set of rules or conventions used to standardize data transfer between devices.

The correction applied to an instrument to account for the effect of temperature upon its response characteristics.

A graduated scale placed in a position so that the stage of a stream may be read directly from it. Staff gauges may be placed on bridge piers or pilings, etc., or placed on specially constructed supports.

Instrument used to measure the amount of water evaporated from the soil surface during a given time interval.

An instrument for determining the direction from which radio waves approach a receiver. It may consist of a manually operated direction indicator, or it may use a servo system to position the antenna automatically in the direction of the incident waves.

Name sometimes used in place of pyranometer as a generic term.