Earth Magnetic facts
While investigating facts about Earth's Magnetic Field and Earth Magnetic Field Weakening, I found out little known, but curios details like:
Astronomers discovered a bizarre rogue planet wandering the Milky Way. The free-range planet, which is nearly 13 times the mass of Jupiter and does not orbit a star, also displays stunningly bright auroras that are generated by a magnetic field 4 million times stronger than Earth's.
how earth's magnetic field is generated?
Birds are able to see and use the Earth's Magnetic field to migrate due to a protein in their eyes called CRY4. To them the Earth's Magnetic field appears to be a bright haze in the sky in the direction of North or South. Their brain even produces this protein during the migration season.
What causes earth's magnetic field?
In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across answering what creates earth's magnetic field. Here are 50 of the best facts about Earth Magnetic Field Flip and Earth Magnetic Pole Shift I managed to collect.
what's earth's magnetic field?
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Airplane runway numbers have to sometimes be repainted since they are based on Earth's magnetic north, which is constantly shifting.
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Big steel vessels have a magnetic signature, due to the polarity of electrons lining up to the earths magnetic field when the steel was heated in manufacture through welding etc, and can be used to locate where the vessel was made.
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Foxes use the Earth's magnetic field to target prey beneath the snow
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Under southern Africa there's an anomaly where the Earth's magnetic field is reversed, which might be a sign that the entire planet's magnetic field might reverse again
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The direction of Earth’s magnetic field reverses every 200,000 - 300,000 years
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Cows will stand along the Earth's magnetic poles - facing either north or south whenever they're grazing or resting regardless of wind or other factors. Nobody is sure why.
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Submarines were originally detected by sensing the way they distort the Earth's magnetic field. Now submarines have copper wires (with 4,000 amps running through them) wrapping the hull to demagnetize the ship to avoid detection.
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The term "rare earth" as in "rare Earth magnets" can be misleading as these metals are not particularly rare or precious. They are about as abundant as tin or lead.
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The magnetc field of Earth orients iron-rich minerals in molten lava along the field lines, then becomes locked into place as the lava hardens. By studying different layers of solidified lava, we know that magnetic poles fliped in the past and will do it again.
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Birds can see the Earth's magnetic field due to the presence of a protein in their retina called Cryptochrome(Cryp4)
Why earth magnetic field reverses?
You can easily fact check why earth magnetic field change by examining the linked well-known sources.
Rare Earth Magnets are not "Rare" at all, but are as abundant as tin or lead
On 19 July 2012 the "million-degree plasma in the sun's atmosphere began to cool and fall to the surface, resulting in a dazzling magnetic display known as coronal rain...it condensed along twisted magnetic field lines...and formed giant streaming arcs, some as tall as five Earths stacked high." - source
The South Atlantic Anomaly, a region of space where computers crash, astronauts lose part of their vision, and a space telescope was destroyed by a guidance computer fault, all caused by the Earth being misaligned with its magnetic field. - source
The magnetic field on Jupiter is 20,000 times stronger than earth's magnetic field.
Earth's magnetic field is not created by its solid iron and nickel inner core. Instead it is created by the earth's outer core, made of molten iron and nickel. The magnetic field is created when the outer core flows around the inner core.
When earth's magnetic field flip?
The aurora look like moving ribbons of light because the particles of plasma are moving in response to the Earth's magnetic field.
How earth's magnetic field protects us?
Dogs can sense Earth's magnetic field, and will attempt to align themselves facing north when they poop in an unfamiliar place. This is why they often spin before they defecate.
Foxes are the first animal to use Earth's magnetic field to judge distance and direction
During the course of normal operations submarines build up 'magnetic signatures' due to the Earth's magnetic field that make them more vulnerable to detection. The Navy 'deperms' subs regularly to make them magnetically silent again.
Cows and deer tend to align themselves north and south with Earth's magnetic field when relaxing.
There exists a bacteria that naturally produces magnetic material to align itself with Earth's magnetic field