In the 1950s a new group of magnets was developed. Hard hexagonal ferrites, also called ceramic magnets, can be cut into thinner slices and be exposed to low level demagnetizing fields without losing their magnetic properties. They also are cheap to make. The molecular hexagonal ferrite structure...
What are the properties of a magnetic field? What is a changing magnetic field? What can produce magnetic fields? What does the magnetic field around a solenoid look like? What does a changing magnetic field induce? What creates the magnetic field in an electromagnet?
What is a magnetic domain? Give an example of a common electric dipole? What does magnetic energy mean? What is the difference between magnetic field and magnetic force? What are magnetic fields made of? What is a magnetic moment? What is the magnetic moment?
it causes the rising and falling magnetic fields to push the core of the motor around. Motors are ubiquitous–at least a dozen are in your car, there is one in every appliance, there is one in your computer to turn the hard drive, and there is ...
Both the magnet frame and the metal plate are made of aluminum. Aluminum magnetic catches are lightweight, durable and highly resistant to corrosion. They also offer a sleek chrome finish that’s aesthetically pleasing. Brass Brass is commonly used in the construction of magnetic catches. Brass,...
structure. All objects in the universe are made of atoms, and each atom has a nucleus at its center. Tiny particles called electrons orbit the nucleus, creating magnetic fields around them. Magnetism occurs when the electrons spin in the same direction. As all the magnetic forces from the ele...
In addition to the use of magnets in pacemakers in which magnetic objects are inserted in to the body, magnetic resonance imaging (MRI) uses strong magnetic fields (of about 1.5 tesla, which is over 20,000 times greater than the Earth's natural magnetic field) to create images of the inte...
Magnetic Sheets are a synthetic, rubber-based substance that is permanently magnetized and has a wide range of uses in the signage and graphics industries. For situations requiring semi-permanent advertising, a magnetic sheet is an ideal choice. The easiest surface for sheet magnet adhesion is ...
Metals can be magnetic and non-magnetic. The magnetic ones will produce a field around them, usually described as “ferromagnetic.” These metals are not magnetic by themselves in their natural state. Still, they can be attracted to objects that produce magnetic fields. ...
electron. The Domain theory states that if an atom's electrons are orbiting all in different directions, their magnetic fields will cancel each other out. If, however, they are orbiting in the same direction, the atom will be magnetized. A material full of these magnetized atoms is a magnet...