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#Mon Aug 09 11:49:32 CEST 2010
Text__ZV8KcKObEd-WfYQ0GneCwQ_text=<p> <br>William Gilbert, a natural scientist who lived 400 years ago in England, tried this  out with a magnetic sphere. </p> <br> He looked at the direction in which the needle  moved at different points on the sphere.
Text__ZV8KcKObEd-WfYQ0GneCwQ_title=