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A weather vane, also called a wind vane, is a movable device attached to an elevated object such as a roof for showing the direction of the wind. Very often these are in the shape of cockerels and are called weather cocks. Arrows are also popular, but a multitude of designs have been used.
The weather vane must be balanced so that half its weight is on either side of its axis, but also designed so that the areas exposed to the wind are unequal. This unequal area causes the vane to rotate to minimize the force of the wind on its surface. The design of the vane causes the end with the smallest area to turn into the wind, pointing to the source of the wind. Because winds are named from their source direction, the pointer enables the viewer to name the wind easily. Most simple weather vanes have directional markers beneath the pointer, aligned with the geographic directions. The pointer must be able to move freely on its axis.
Weather cocks, especially those with fanciful shapes, do not always show the real direction of a very gentle wind. This is because the figures do not achieve the design balance required in a weather vane: an unequal surface area but balanced in weight.
More on [ Weather vane ]
RT @leatherdykeuk: Wet Newcastle streets / a break in the clouds / sunlit weathervanes
TheAmericanPoet (LORENZO) Wed, 04 Nov 2009 14:40:10 -0000
RT @leatherdykeuk: Wet Newcastle streets / a break in the clouds / sunlit weathervanes
Weathervanes
baiboa (Kulis Sara) Tue, 03 Nov 2009 21:42:29 -0000
Weathervanes
Weathervanes by @freelancewhales is an almost-perfect soundtrack for coding ('almost' only because there needs to be more). That is all.
protocool (Trevor Squires) Tue, 03 Nov 2009 17:08:25 -0000
Weathervanes by @freelancewhales is an almost-perfect soundtrack for coding ('almost' only because there needs to be more). That is all.
Weathervanes are accents that display your personality, interest, or identifies the area you live. Check @ http://prairierosecountry.com
ndadle (Elda Titus) Tue, 03 Nov 2009 14:09:08 -0000
Weathervanes are accents that display your personality, interest, or identifies the area you live. Check @ http://prairierosecountry.com
Our weathervanes are made out of copper, brass and stainless steel to ensure a rust free product. @ http://prairierosecountry.com
ndadle (Elda Titus) Tue, 03 Nov 2009 14:06:14 -0000
Our weathervanes are made out of copper, brass and stainless steel to ensure a rust free product. @ http://prairierosecountry.com
oh I love briefs with illustration involved, got some spooky scenes that we're making into weathervanes!
shurlybee (Shirley Gibson) Tue, 03 Nov 2009 12:03:31 -0000
oh I love briefs with illustration involved, got some spooky scenes that we're making into weathervanes!
Bar Harbor Weathervanes and Cupolas - Offers custom made and handcrafted weathervanes and cupolas.
Meta Description: [ Bar Harbor Weathervanes is a manufacturer of copper weathervanes and cupolas. Making weathervanes for over 30 years - our weathervanes are hand- crafted right here in Trenton, Maine. ]
Majestic Weathervanes - Constructed from aluminum and stainless steel. Built by hand from the original naval plans.
Meta Description: [ Majestic Weathervanes is small company located in Rhode Island that specializes in the art of handcrafted aluminum and stainless steel metal weathervanes. ]
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