explain this!!!!!!
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Whenever an electric current is generated, it produces a magnetic field. That's the principle on which an electromagnet works.
In our body, nerves carry impulses. These impulses are basically little electrical currents. These little currents form extremely small magnetic fields of their own. The field is stronger at the heart and the brain, where the impulses occur more. This causes a slight difference from the rest of the field, and can be catched my MRI, or magnetic resonance imaging, which uses magnetic fields to form images, like ultrasound scanning uses ultrasonic waves. The image formed by MRI can then be used to diagnose diseases in the heart and brain, and thus is useful in the medicinal field.
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Here's your answer...
Whenever an electric current is generated, it produces a magnetic field. That's the principle on which an electromagnet works.
In our body, nerves carry impulses. These impulses are basically little electrical currents. These little currents form extremely small magnetic fields of their own. The field is stronger at the heart and the brain, where the impulses occur more. This causes a slight difference from the rest of the field, and can be catched my MRI, or magnetic resonance imaging, which uses magnetic fields to form images, like ultrasound scanning uses ultrasonic waves. The image formed by MRI can then be used to diagnose diseases in the heart and brain, and thus is useful in the medicinal field.
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