weather vane


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weather vane

or

wind vane,

instrument used to indicate wind direction. It consists of an asymmetrically shaped object, e.g., an arrow or a rooster, mounted at its center of gravity so it can move freely about a vertical axis. Regardless of the design, the portion of the object with greater surface area (usually the tail) offers greater resistance to the wind and thus positions the vane so that the forward part points in the direction from which the wind is blowing. The compass direction of the wind may then be determined by reference to an attached compass rose; alternatively, the orientation of the vane may be relayed to a remote calibrated dial. The wind vane must be mounted at a distance from the nearest obstacle equal to at least twice the height of the obstacle above the vane if the observed wind direction is to be representative of meteorologically significant wind patterns; for this reason, the vane is often mounted on a pole or tower that is in turn mounted on the roof of a tall building.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

weather vane

A metal plate, often decorated, or in the shape of a figure or object, which rotates freely on a vertical spindle to indicate wind direction; usually located atop a spire or other elevated position on a building.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

weather vane

weather vane
A device that shows the direction the wind is blowing.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

weather vane

a vane designed to indicate the direction in which the wind is blowing
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Archaeologists have discovered bronze weather vanes that the Vikings used in the ninth century Many feature an animal or creature from Norse mythology They often were used on Viking ships, and they topped many Scandinavian steeples.
To simulate the look of metal in their chipbpoard weather vanes, the students used metallic colors, such as copper, brass and black acrylic paint to make them look authentic.
SEALED OFF: Christ Church in New Union Street PRECARIOUS: The weather vane on top of Christ Church spire drawing attention from concerned police (below) COP THAT: Police officers point at the weather vane while directing onlookers away from the area
Archaeologists have discovered bronze Viking weather vanes from the ninth century.
Send your order, naming the design or designs you want, to: Sunday People Weather Vane Offer, PO Box 5608, Birmingham B74 4DR.
The pole, with its fox weather vane is now back in the village.
Featuring an extra large thermometer, with an easy to read gauge for readings in both Celsius and Fahrenheit, it also has an incremental rain catcher, an anemometer to observe wind speed and a weather vane.
VANDALS managed to scale a 20ft building, steal the centrepiece of a weather vane and escape unnoticed - even though it was next to a police station.
Wind chimes are used for music, a weather vane for geography, a wendy house for role play, outdoor easels for art and there are also shapes, such as triangles, circles and squares for mathematics.
A guy rope has snapped and snagged on the castle weather vane which means the Welsh Dragon flag is no longer dancing gracefully in the wind.
City conservation officer, John Stagg said: 'Wimpey's acquisition saved the building from further major deterioration and a fine job has been done on reinstating all the exterior historic detailing of the building - like gilding the ornate weather vane - and also removing the unsympathetic changes made in later years.'
The bolt hit the weather vane on top of Charlecote House as 5,000 people gathered for the show by popular musician and television presenter Jools Holland.