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not running parallel to the planet's surface. Norman demonstrated magnetic dip by creating a compass needle that pivoted on a horizontal axis. The needle tilted at a steep angle relative to the
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The newe attractive: shewing the nature, propertie, and manifold vertues of the loadstone : with the declination of the needle, touched therewith under the plaine of the horizon
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Magnetic inclination and local variations were known before Robert Norman, but his pamphlet had a greater influence than the earlier work.
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This biographical article about a
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