How strong is the Earth's magnetic field?

Earth's magnetic field varies depending on your position on the Earth's surface. In regions near magnetic poles, such as Siberia, Canada and Antarctica, it can exceed 60 microtes (0.6 Gauss), while in the regions, such as South America and South Africa, there are around 30 microtes (0.3 Gauss). Near the poles, the field strength decreases with an inverse square distance, while at greater distances, such as in space, decreases with a distance of the distance. Where the main meridian intersects with the equator, the field of the field is about 31 microtes. The solar wind, fired from the Sun in all directions at high speeds, collides with the magnetosphere in an area called the nose shock. Like gravity, magnetism has an infinite range, although it decreases so quickly with distance that its strength over 10 Earth radii is very low.

30-60 microtes for the Earth's magnetic field may not sound like a lot but toYou can take into account the total volume of the field, its total energy is extremely large, much larger than any magnetic field generated artificially. To get a better idea of ​​what Tesla is, the typical bar magnet has 10 milites field strength, a strong 1 Tesla electromagnet, a powerful laboratory magnet 10 Tesla and the surface of a neutron star, about 100 megaters.

Earth's magnetic field may not be so strong compared to located magnetic fields, but affects minerals around the ground. When the magma flows out of the cracks in the oceans and cools, the orientation of the Earth's magnetic field is reflected in the resulting structure of chilled rocks. By analyzing Magma, which has stiffened millions of years ago, scientists have found that this field will overturn every 250,000 years.