2013 - Volume #37, Issue #3, Page #43
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Spinning Wheel Of Color
Anyone who says you can’t see the wind hasn’t seen a group of Whirlydoodle wind turbines in action. When a wind current moves through one, the LED lights change from red at low wind speeds to green to a full spectrum of color that gets brighter as the wind speed increases. The spinning light can be seen as far as a hal..........


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2013 - Volume #37, Issue #3