Iron

A simple electromagnet consisting of a coil of wire wrapped around an iron core. A core of ferromagnetic material like iron serves to increase the magnetic field created. The strength of magnetic field generated is proportional to the amount of current through the winding.

In our everyday experience aluminum doesn’t stick to magnets (neither does copper). Most matter will exhibit some magnetic attraction when under high enough magnetic fields. But under normal circumstances aluminum isn’t visibly magnetic.

No. Electrical conductivity and magnetic permeability have little to do with each other. The magnetic field you will get with an aluminum core will be the same as the field you get with no core (you don’t need any core at all to have an electromagnet).

Usually that will have no noticeable effects at all; the magnetic field from the magnet goes through aluminium much like it’s air. If you have multiple layers (several millimetres) and fast changing magnetic fields nearby then there could have repulsive and shielding effects (because aluminium supports eddy currents).

To stick a magnet to aluminium you will need to glue it, or use a ferromagnetic material (Iron example)) behind the aluminium plate or connect the aluminium piece to a power source in order to create a magnetic field and stuck to the magnet .

Two magnets together will be slightly less than twice as strong as one magnet. When magnets are stuck entirely together (the south pole of one magnet is connected to the north pole of the other magnet) you can add the magnetic fields together.

However, there are simple ways that the strength of a magnet can be increased. Take the magnet which has lost its power and stroke it with the stronger magnet. Linear strokes in a single direction will realign the electrons within the magnet, which will help its strength to increase.

The world’s most powerful magnet is 44.14 Teslas. This super magnet has a magnetic field of 44.14 Teslas, and we can say that it is 900 thousand times that of the earth and more than 9 times that of a closed resonance equipment that we find in a hospital.

The force that a magnet exerts on certain materials, including other magnets, is called magnetic force. The force is exerted over a distance and includes forces of attraction and repulsion. North and south poles of two magnets attract each other, while two north poles or two south poles repel each other.

In any magnet, there are areas where the force of magnetism is strongest. If the north pole of one magnet lines up with the south pole of another, the magnets pull together. If the north pole of one magnet meets the north pole of another (or south meets south), the magnets push apart.

The magnetic field generated by any magnet is always strongest at either pole. The magnetic force is equally as strong at both the north and south pole.

Research has shown that magnets increase the production of amino acids and positively affect the entire body. In other words, magnets accelerate the metabolism and help the body function properly. They help oxygen and nutrients arrive at the location of injury as soon as possible so as to repair the damage.

Drilling or sawing of neodymium magnets is not recommended for the following reasons: The material is brittle and fragile. Drilling causes combustible dust. The heat caused by the drill can possibly demagnetise the material.

The maximum energy product of a magnet is measured in Mega Gauss Oersteds (MGOe). This is the primary indicator of a magnets ‘strength’. In general, the higher the maximum energy product value, the greater the magnetic field the magnet will generate in a particular application.

One gauss corresponds to the magnetic flux density that will induce an electromotive force of one abvolt (10-8 volt) in each linear centimetre of a wire moving laterally at one centimetre per second at right angles to a magnetic flux. One gauss corresponds to 10-4 tesla (T), the International System Unit.

electromagnet

Rather, the compass magnet is currently attracted to an area 966 kilometers (600 mi) from the end of the axis of rotation. This area is known as the magnetic north pole. Interestingly, the magnetic poles of Earth can reverse, so that the magnetic north pole becomes the magnetic south pole.

A magnet is an object that can pull certain types of metal toward itself (attract), or push those metals away (repel). Magnetism can work over a distance, meaning that a magnet does not have to be touching an object to attract it or repel it.

When two like-poles point together, the arrows from the two magnets point in OPPOSITE directions and the field lines cannot join up. Unlike-poles attract: When a north pole and south pole point together, the arrows point in the SAME direction so the field lines can join up and the magnets pull together (attract).

Magnetic forces are non contact forces; they pull or push on objects without touching them. Magnets are only attracted to a few ‘magnetic’ metals and not all matter. Magnets are attracted to and repel other magnets.