Astatic needles
An astatic system comprises two equal and parallel magnetic needles, but with their polarities reversed. This arrangement protects the system from the influence of the , as the of the two needles cancel each other out. Because of this phenomenon, astatic needles were often used in galvanometers.
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Astatic needles
An astatic system comprises two equal and parallel magnetic needles, but with their polarities reversed. This arrangement protects the system from the influence of the , as the of the two needles cancel each other out. Because of this phenomenon, astatic needles were often used in galvanometers.
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An astatic system comprises tw ...... e often used in galvanometers.
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An astatic system comprises tw ...... e often used in galvanometers.
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Astatic needles
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