Earth's magnetic field into electrical power.
Earth's magnetic field is indeed a vast source of magnetic energy, the energy density is relatively low, making it challenging to harness and convert into usable electrical power.
The Earth's magnetic field is primarily a result of complex interactions between the Earth's molten iron core and its rotation. The magnetic field lines are constantly shifting and exhibit a relatively low intensity, typically around 25 to 65 microteslas at the Earth's surface.
1. Soft iron is an ideal material for magnetic field harvesting because it has a high permeability, which means it can easily attract and absorb magnetic fields. When placed in the Earth's magnetic field, the soft iron will become magnetized and generate a magnetic field of its own, which can then be harnessed for various applications.
2. One example of magnetic field harvesting is the use of a magnetic field sensor, which is commonly found in compasses. The sensor is made of soft iron and works by detecting changes in the Earth's magnetic field. As the sensor is moved, the soft iron within it will become magnetized and create a magnetic field that is proportional to the strength of the Earth's field. By measuring the strength of this magnetic field, the sensor can determine the direction of the magnetic north.
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Published on : Hemant Rohera, Pinky Rohera and Jyoti Kalsi
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