Weather Vane: Originally used as a wind vane, it is an instrument that indicates the wind direction. The name developed based on observations on what kind of weather occurred with certain wind directions. Creative designs often adorn the tops of barns and houses.

 

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Weather Vane: Originally used as a wind vane, it is an instrument that indicates the wind direction. The name developed based on observations on what kind of weather occurred with certain wind directions. . . . View Full Definition

Weather Surveillance Radar (WSR-88D): The newest generation of Doppler radars, the 1988 Doppler weather radar. The radar units, with help from a set of computers, show very detailed images of precipitation and other phenomena, i . . . View Full Definition

Weather Resistance: The ability of a coating to retain its appearance and integrity in the face of various weather conditions.

Weather Radar: Weather radar is used as an aid to weather forecasting.

Weather: The state of the atmosphere at a specific time and with respect to its effect on life and human activities. It is the short term variations of the atmosphere, as opposed to the long term, or . . . View Full Definition

Weather Derivative: A weather derivative is a futures contract — or options on that futures contract — where the underlying commodity is a weather index. These derivatives work much the same way that interest-r . . . View Full Definition

Weather-Protected Machine: Type I (WPI) weather-protected machine is an open machine with its ventilating passages so constructed as to minimize the entrance of rain, snow and airborne particles to the electric parts . . . View Full Definition

Weathering: The decay and breakup of rocks on the earth's surface by natural chemical and mechanical processes. The mechanical action includes large changes of temperature, extreme temperatures, frost, . . . View Full Definition

Wind Vane: An instrument that indicates the wind direction. The end of the vane which offers the greatest resistance to the motion of the air moves to the downwind position.

Zone Of Weathering: A subsurface area, above the water table, where mineral and organic materials are subject to weathering.