Sciences

Although weak, the earth's magnetic field is perceived by various animals, many vertebrates respond to magnetic stimuli: fish, amphibians, reptiles, birds.

The Earth's magnetic field originates at a depth of 2,900 kilometers. There is the earth's core, which is essentially composed of liquid iron that is constantly being

We know the magnetic field of natural magnets, found in different parts of the world, appeared some millions of years ago. But the magnetic field of manganese

Diamagnetism is a property of certain materials which, when subjected to an external magnetic field, develops a very weak magnetic field opposite to that

The two terms ferromagnetic and magnetic are often used interchangeably to describe a material to which the magnet adheres.

The Moon today is almost devoid of a magnetic field. The current magnetic field measured on the surface is 1 000 times weaker than that on the Earth's surface.

Solar flares are usually accompanied by the ejection of plasma streams. When they come into contact with our planet, these plasma flows, composed of ions and

In theory, yes. But the thickness of the magnet coating and its irregularities reduce the adhesive force of a magnet stack compared to a single magnet of the

It is a film that has a magical aspect : you place it on an object that contains a magnet and it shows you the magnetic field produced by the magnet, even

The experiences are not always as we expect them to be. In addition to the risk of pinching, you must also be wary of metal shards due to impacts between

The pacemaker, or cardiac battery, is a device implanted in the body that produces electrical impulses intended to stimulate the heart muscle, thus making it

Remanence or remanent magnetisation or residual magnetism is the magnetisation left behind in a ferromagnetic material (such as iron) after an external

It is known that some materials, solids, liquids or gases can behave differently in zero gravity (or micro-gravity). One might ask whether permanent magnets are

However, some newbies claim to be able to be able to use in magnetic therapy only the north or the south of the magnet,or to magnetise water with different

The attraction between magnets is slightly stronger than their repulsion. This is due to the orientation of the elementary magnets in the actual magnet. When

In April 1820, during a course in electricity which he was giving to his students, Orsted discovered the relation between electricity and magnetism in an

The first irrefutable proof is that magnetic monopoles do not exist. Indeed, a magnetic field only North or South cannot exist as the tails side of a coin cannot

Auris’ therapeutic magnets are bipolar, they have a north side and a south side, like a coin has one side heads and one side tails.

The reason is that the electrons of these metals, like those in iron, have a special configuration around their nucleus which allows them to all orient themselves in

As soon as a wound goes beyond the surface layer of the skin and reaches the dermis, the healing process starts to close the breach, limiting the loss of

It is a powerful shield that protects the Earth from harmful effects of the highly energetic particles carried out by the solar winds and those which come from

You have to start by making the alloy of the neodymium magnet. The three elements : iron, neodymium and boron as well as other ingredients are finely ground

In the early 1900s, scientists discovered that rocks of volcanic origin had variable magnetisation direction. Some measurements indicated a magnetisation in the

This is an astonishing magnetic system called Halbach’s network or magic cylinder. This assembly of magnets creates a dense and homogeneous magnetic

Some will say that they have always known it, others will find it hard to believe it… But today, the facts are here : without even being aware of them, we would

Magnetic stones, often called magnetites, are iron-rich minerals found mainly in igneous and metamorphic rocks.