| 1. | During a geomagnetic flip, compass needles would point south rather than north.
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| 2. | This new type of German mine used a compass needle to detonate itself.
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| 3. | Norman demonstrated magnetic dip by creating a compass needle that pivoted on a horizontal axis.
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| 4. | His compass needle will point west toward magnetic north.
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| 5. | Worse, the ferrous rocks make compass needles whirl erratically.
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| 6. | To avoid errors due to parallax, a plane mirror is mounted below the compass needle.
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| 7. | All the compass needles point in his direction.
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| 8. | It shouldn't take many strokes to make a magnet strong enough to use as a compass needle.
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| 9. | His other psychic abilities are the ability to spin compass needles around and the hands on watches.
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| 10. | Originally, the instruments relied on the Earth's magnetic field to provide the restoring force for the compass needle.
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