![](http://www.alamy.com/thumbs/6/4D3A8B3F-05E9-4E55-825D-F3F121145494/2BE119F.jpg)
William Gilbert, Magnetic Dip Circle, 1600
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Photo credit: © Science History Images / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1600, 17th, art, bw, century, circle, de, device, dip, earth, field, geomagnetism, geophysics, gilbert, history, instrument, magnete, magnetic, magnetism, poles, william, woodcut