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Magnetic Field facts

While investigating facts about Magnetic Field Lines and Magnetic Field Strength, I found out little known, but curios details like:

Humans actually possess the protein (cryptochromes) needed for the detection of magnetic fields. But our brains doesn't seem to have any way to decode the information.

how magnetic field is produced?

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.

What magnetic field lines?

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 magnetic field intensity. Here are 50 of the best facts about Magnetic Field Formula and Magnetic Field Of Earth I managed to collect.

what magnetic field made of?

  1. 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.

  2. There's a type of neutron star called a magnetar which has a magnetic field that's so powerful that being within 1,000 miles of one would warp all the atoms in your body and from a distance of 100,000 miles away it would be able to wipe out the data of every credit card on the planet.

  3. Physicists have experimentally achieved temperatures below absolute zero. Using supercooled potassium gas and a system of lasers and magnetic fields to precisely manipulate the potassium atoms, physicists successfully "cooled" the gas to a few billionths of a degree below absolute zero.

  4. The S Pen in the Samsung Galaxy Note devices doesn't have its own battery. Instead, it makes use of electromagnetic fields radiating from the device itself to power itself via magnets and electromagnetic currents

  5. In 2003 a man in Belgium stole diamonds worth 100M Dollars after getting past a lock with 100M possible combinations, infrared heat detectors, a seismic sensor, Doppler radar, a magnetic field and security force. He was caught because he left a partially eaten sandwich near the crime scene

  6. Medieval European stained-glass windows contain tiny gold particles, which when energised by the sun’s rays, create a magnetic field that destroys air-borne pollutants.

  7. Those really thin fridge magnets are a special type of magnet called a Halbach array that has almost no magnetic field on one side - these were originally designed for use in particle accelerators.

  8. A small magnet implanted in a finger can allow one to sense magnetic fields. This body mod can be very useful in professions that work with electric currents, allowing the detection of live wires and avoiding electric shock.

  9. 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.

  10. Ganymede, the largest moon in our Solar System, is the only known moon that has a magnetic field.

magnetic field facts
What magnetic field strength?

Magnetic Field data charts

For your convenience take a look at Magnetic Field figures with stats and charts presented as graphic.

magnetic field fact data chart about [ oc ]MRI magnetic field shim current check X2Y2 axis, phase
[ oc ]MRI magnetic field shim current check X2Y2 axis, phase vs distance from iso-center

magnetic field fact data chart about Energy bands of electrons in an idealized crystal in a magne
Energy bands of electrons in an idealized crystal in a magnetic field (From G.E.B by Douglas R. Hofstadter)

Why magnetic field lines are closed curves?

You can easily fact check why magnetic field lines never intersect by examining the linked well-known sources.

Humans have a lot more than 5 senses, including balance, pressure, hunger and the ability to detect magnetic fields

Foxes use the Earth's magnetic field to target prey beneath the snow - source

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 - source

The direction of Earth’s magnetic field reverses every 200,000 - 300,000 years

The Yamato 1, the first working prototype boat to use a Magnetohydrodynamic drive (MHD). Built by Mitsibishi, the ship's drive electrifies sea water and utilizes magnetic fields to propel itself. The MHD uses no moving parts. - source

When magnetic field is produced?

Neutron star PSR J1748-2446 is the fastest spinning celestial object in the universe. The star rotates 716 times every second, so its equator moves at about 25% the speed of light. It is also 50 trillion times the density of lead and has a magnetic field a trillion times stronger than the Sun’s.

How magnetic fields work?

Uranus has a magnetic field that "flickers" because the magnetic field is so off-kilter with its rotational axis that magnetic lines will snap apart and reconnect as it rotates. According to one astronomer, "Uranus is a geometric mess."

Some mines are set to explode in response to changes in magnetic and acoustic fields. Sailors on minesweepers are not allowed to have wire coat-hangers because they could kill their magnetic signature and set off a mine.

The retinas of Robins contains Cryptochrome, a protein which allows them to see magnetic fields. The magnetic fields are visualised as patterns of light and shade and perhaps colour, onto the visual imagery.

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.

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.

When magnetic field is created?

There are stars called "Magnetars" with magnetic fields strong enough to kill any life form at a distance of 1000km

PEPSI spent several hundred million dollars to slightly change their logo in 2008. The branding agency prepared a 27-page document to prove that this logo is the Da Vinci Code of branding, drawing on everything from magnetic fields to the "Golden Ratio"

Birds can see the Earth's magnetic field due to the presence of a protein in their retina called Cryptochrome(Cryp4)

Some people get magnets implanted under their skin so they can feel electromagnetic fields and pick stuff up with them.

In 2004, a Magnetar (a type of a Neutron Star with a powerful magnetic field) had a large gamma ray burst which briefly expanded the ionosphere. It is thought to be the largest explosion observed in the galaxy by humans since the supernova observed by Johannes Kepler in 1604.

How magnetic field is created?

Cats have tiny magnetic particles in their wrists which allow them to detect magnetic fields. This helps them to find their way home, even thousands of KM away, and predict earthquakes by detecting microscopic changes in the geomagnetic net.

In 2003 a five man team stole $100M worth of diamonds from the Antwerp diamond center. They were able to surpass multiple security mechanisms including heat and seismic sensors, and a magnetic field. The team got away but the leader was soon caught because of a half eaten sandwich he left behind

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 condensed along twisted magnetic field lines...and formed giant streaming arcs, some as tall as five Earths stacked high."

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.

He worked with Walther Meissner on superconductivity and in 1932 showed that the threshold of a magnetic field which affects superconductivity varies with the shape.

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.

The aurora look like moving ribbons of light because the particles of plasma are moving in response to the Earth's magnetic field.

It is the only moon known to have a magnetosphere. That implies there is something inside helping to generate strong magnetic field. Like Europa, Ganymede is thought to have a subsurface ocean, overlying a liquid iron and nickel core. That core is what helps generate the magnetic field. A spherical shell of mostly ice surrounds the rock shell and the core. The ice shell appears to be very thick, maybe 497 miles (800 km) thick. Though it is mostly ice, the ice shell may have rock mixed in.

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

Several spacecraft orbiting or completed flybys of Jupiter have explored Ganymede. The first mission to explore Ganymede up close was the Pioneer 10. Voyager 1 and Voyager 2 passed by in 1979 and discovered Ganymede was larger than Saturn's moon Titan which was thought to have been bigger. In 1996, the Galileo spacecraft completed a close flyby and discovered the magnetic field, while the discovery of the ocean was announced in 2001.

The radiation levels on Europa are high enough to kill a human being in a single day. It is the result of solar radiation and energetic particles produced by Jupiter's strong magnetic field.

Magnetic implants can be inserted beneath the skin of the fingers to enable a person to gain sensory perception of magnetic fields

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.

This is our collection of basic interesting facts about Magnetic Field. The fact lists are intended for research in school, for college students or just to feed your brain with new realities. Possible use cases are in quizzes, differences, riddles, homework facts legend, cover facts, and many more. Whatever your case, learn the truth of the matter why is Magnetic Field so important!

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