1. The magnetic needle is free to rotate in the horizontal plane. 2. A magnetic needle is placed parallel with the copper strip. 3. VERO BEACH, Fla .-Dave Wallace's internal compass led him home, the magnetic needle pointing west. 4. An "'astatic system "'comprises two equal and parallel magnetic needles , but with their polarities reversed. 5. It consists of a tiny, powerful magnetic needle pivoted at the centre of the coil. 6. They come at last to the pole proper, where they find a huge magnetic needle . 7. Romagnosi's experiments showed that an electric current from a voltaic pile could deflect a magnetic needle . 8. In order to navigate, Peral used a bronze magnetic needle installed in the ceiling of the turret. 9. The typical Chinese navigational compass was in the form of a magnetic needle floating in a bowl of water. 10. While compass surveying, the magnetic needle is sometimes disturbed from its normal position under the influence of external attractive forces.
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