Earth`s magnetic field and permanent magnets

In summary, magnets have always been fascinating and it is questioned why Earth's magnetic field does not significantly affect permanent magnets. While a compass with a needle made of lodestone should work just as well as one made of iron, the poles of a lodestone are relatively close together compared to the scale of the Earth, resulting in an equal pull towards the north pole as there is a push. Even if one were to be on the pole, the magnet would still attract to the ground, but such cases are not commonly heard of.
  • #1
Tominator
79
1
I was always fascinated by magnets and I never understood, why Earth`s magnetic field doesn`t conspicuously affect permanent magnets. Is it too weak or what?
 
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  • #2
A compass with a needle made of lodestone should work just as well as one with a needle made of iron. But if by ''conspicuous" you mean flying through the air, then notice that the north and south poles of a piece of lodestone are so close together compared to the scale of the Earth that there is just as much pull towards the north pole as there is a push.
 
  • #3
But what if you were on the pole? The magnet should attract to the ground but I have not heard about such a case.
 

Related to Earth`s magnetic field and permanent magnets

1. How does Earth's magnetic field protect us?

The Earth's magnetic field acts like a shield, protecting us from harmful particles and radiation from the sun and outer space. It deflects most of these particles away from the Earth's surface, preventing them from reaching us and causing damage to our atmosphere and living organisms.

2. What causes Earth's magnetic field?

Earth's magnetic field is generated by the movement of molten iron and nickel in its outer core. This creates electric currents, which in turn create a magnetic field. This process is known as the geodynamo theory.

3. How do permanent magnets work?

Permanent magnets are materials that have their own magnetic field. This is due to the alignment of the atoms in the material, which creates a magnetic field. When placed near another magnetic field, such as the Earth's, the fields interact and cause the magnet to either attract or repel.

4. Can Earth's magnetic field reverse?

Yes, Earth's magnetic field has reversed multiple times in the past. This is known as a geomagnetic reversal, where the magnetic north and south poles switch places. Scientists are still studying the causes and effects of these reversals.

5. How does Earth's magnetic field affect our daily lives?

Earth's magnetic field has a significant impact on many aspects of our lives. It allows us to use compasses for navigation, protects our technology from solar storms, and even influences animal migration patterns. It also plays a role in the formation of the aurora borealis (northern lights).

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