Earth magnetism and its application

[Rishav sapahi]

if magnetic field induce current then why satelites or spaceship doesn't gets electrified due to Earth magnetism

 

[MPKU]

A magnetic field doesn't always have a voltage associated with it. Voltage can be generated by a changing magnetic field, or when the potential between two areas are high enough (e.g. lightning). However, this does not normally occur naturally.

 

[Drakkith]

The field is extremely weak and the coils needed to generate appreciable current would probably be horribly large and heavy. Plus it would create current by stealing orbital energy from the satellites, and they would slowly fall from orbit.

 

[Bobbywhy]

You may want to read about these:

http://en.wikipedia.org/wiki/Electrodynamic_tether

Cheers,
Bobbywhy

 

[sardar]

Earth magnetism is a natural phenomenon caused by the movement of molten iron in the Earth's outer core. This creates a magnetic field around the planet, which extends into space. This magnetic field plays a crucial role in protecting our planet from harmful solar radiation and also has various applications in everyday life.

One of the applications of Earth magnetism is in navigation. The Earth's magnetic field is used by animals such as birds and bees to navigate, and humans have been using it for centuries to navigate the seas. Even today, compasses rely on the Earth's magnetic field to point towards the North Pole.

In terms of satellite and spaceship technology, it is important to note that these objects are designed to withstand and even utilize the Earth's magnetic field. They are equipped with special materials and shielding that protect them from being affected by the magnetic field. Additionally, satellites and spaceships are designed to have their own magnetic fields, which can counteract the effects of the Earth's magnetic field.

Furthermore, the Earth's magnetic field is relatively weak compared to other sources of magnetism, such as electromagnets. The strength of the Earth's magnetic field is measured in nano-Teslas, while the magnetic field of a typical refrigerator magnet is measured in milli-Teslas. This means that the Earth's magnetic field is not strong enough to induce a significant amount of current in satellites and spaceships.

In summary, while the Earth's magnetic field can induce current, satellites and spaceships are designed to withstand and utilize this magnetic field. They are equipped with materials and shielding to protect them from its effects, and their own magnetic fields can counteract the Earth's weak magnetic field.