Image:Greenpark.wind.turbine.arp.jpg

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A wind generator at Junction 11 of the M4 motorway, at Greenpark industrial estate, near Reading, Berkshire, England. Construction finished in November 2005. The turbine supplies approx 1000 homes.

The turbine on top of the 85 m m (279 ft) tower is the German-made Enercon E-70. The three fibreglass blades are each 33m (108 ft) long, rotating at 6 to 21 rpm depending on wind speed. Maximum power output of 2.05 MW is reached at a wind speed of 14 m/s (31 mph) then remains constant with increasing wind speed. The hub is kept facing into wind.

At a pre-determined high wind speed the blades cease rotation.

Photographed by Adrian Pingstone in December 2005 and released to the public domain.

Public domain This image has been released into the public domain by its author, Arpingstone. This applies worldwide.

In some countries this may not be legally possible; if so:
Arpingstone grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified image.

Image title OLYMPUS DIGITAL CAMERA
Camera manufacturer OLYMPUS CORPORATION
Camera model C750UZ
Orientation Normal
Horizontal resolution 72 dpi
Vertical resolution 72 dpi
Software used v753u2-86
File change date and time 14:47, 19 December 2005
Y and C positioning 2
Exposure time 1/800 sec (0.00125)
F-number f/3.2
Exposure Program Normal program
ISO speed rating 50
Exif version 2.2
Date and time of data generation 14:47, 19 December 2005
Date and time of digitizing 14:47, 19 December 2005
Image compression mode 2
Exposure bias 0
Maximum land aperture 3.4
Metering mode Pattern
Light source Unknown
Flash 16
Lens focal length 10.9 mm
Color space sRGB
Custom image processing Normal process
Exposure mode Auto exposure
White Balance Auto white balance
Digital zoom ratio 0
Scene capture type Standard
Contrast Normal
Saturation Normal
Sharpness Normal
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