compass needlesの例文

例文

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1. During a geomagnetic flip, compass needles would point south rather than north.
2. This new type of German mine used a compass needle to detonate itself.
3. Worse, the ferrous rocks make compass needles whirl erratically.
4. To avoid errors due to parallax, a plane mirror is mounted below the compass needle.
5. Norman demonstrated magnetic dip by creating a compass needle that pivoted on a horizontal axis.