lexicon

  • Adhesion

    The term adhesion is derived from the Latin word adhaerere (in English "adhere").

  • adhesive force

  • Air gap

    In the technical sense, an air gap describes an area in the iron core of an electromagnet that is often filled with air.

  • AlNiCo

    AlNiCo is a material used for the production of magnets. It consists of aluminum, nickel and cobalt.

  • Aluminum-nickel-cobalt

    AlNiCo magnets are permanent magnets based on an aluminum-nickel-copper alloy. Additionaly parts of metals such iron, copper or titanium are added to the alloy.

  • Attraction and repulsion of a magnet

    Tiny circulating currents at the atomic level are responsible for a permanent magnet exerting a magnetic force. It is so strong, even with small magnets, that you can clearly feel it.

  • Barkhausen effect

    The Barkhausen effect describes the discontinuous change in the magnetization of ferromagnetic materials that are in a constantly changing, external magnetic field.

  • Bloch Walls

    The Bloch walls form a transition between the Weiss domains with their differently aligned electron spins.

  • Coating of magnets

    Magnets are often coated. There are several ways to do this.

  • Coercivity

    The magnetic coercive field strength is the magnetic field strength that is necessary to completely demagnetize a ferromagnetic substance.

  • Components of a magnet

    The components of a magnet tell you something about adhesion.

  • Curie constant

    The Curie constant can be used to determine the magnetic attraction of a substance as a function of temperature.

  • Curie temperature

    The temperature at which a ferromagnetic becomes paramagnetic is called the Curie temperature.

  • Demagnetise permanent magnet

    Bodies made of ferromagnetic materials are not only attracted by magnets, but can also experience magnetization themselves when they are touched.

  • Diamagnetism

    Diamagnetism, together with para and ferromagnetism, describes various magnetic properties of matter.

  • Diametrically

    The magnetization parallel to the diameter is called diametral magnetization.

  • Dipole

    A single charge that emits an electric field is called a monopoly. In contrast, a dipole is understood to mean the physical arrangement of two opposite charges (positive and negative).

  • Electrodynamics

    Classical electrodynamics deals with moving electric charges as well as the associated electric and magnetic fields.

  • Electromagnetism

    Electromagnetism is one of the fundamental forces of physics and has been intensively researched since its discovery by the physicist Oersted and later Michael Faraday and James Clerk Maxwell.

  • Electron spin

    Electrons are negatively charged elementary particles. In addition to their mass and their electrical charge, they have a third important property: the electron spin.

  • Elementary magnets

    The elementary magnets in a magnetisable body such as iron ensure the magnetisability that we are so familiar with.

  • Energy product

    The energy product results from the magnetic flux density and the magnetic field strength of a magnet.

  • Exchange interaction

    The phenomenon of the quantum mechanical exchange interaction explains how the particles inside the atom behave.

  • Ferri- and antiferromagnetism

    Ferrimagnetism and antiferromagnetism are two magnetic properties of materials. Unlike antiferromagnetic materials, ferrimagnetic materials are strongly attracted to a magnetic field.

  • Ferrite

    Ferrite magnets are easily recognized by their black color. Most people know them from school, where they are used, for example, as classic blackboard magnets.

  • Field lines

    In physics, magnetic lines are the lines that graphically represent the course of a magnetic field and thus the force and properties of a magnet.

  • Gauss

    Gauss is still considered one of the most important German scholars and mathematicians. With his main work "Disquisitiones arithmeticae" he laid the foundation for modern number theory.

  • Gauss unit

    The Gauss unit indicates the magnetic flux density. It was named after the well-known mathematician Johann Friedrich Gauss.

  • Hall probes

    Devices that can be used to measure magnetic fields are called Hall probes or Hall sensors.

  • Hysteresis

    What exactly is hysteresis? – The effect of hysteresis simply explained

  • Iron core

    As additional components in current-carrying induction coils and transformers, iron cores can increase the voltage.

  • Lines of force

    Magnetic lines of force - according to the dictionary also field lines or magnetic field lines - are linear structures that depict the flow within a magnetic field.

  • Magnet

    Magnets are an integral part of our everyday life. You come across us in various shapes, colors or sizes and are used for very different purposes.

  • Magnet demagnetize temperature

    With the help of external influences such as temperature increases or shocks, it is possible to demagnetize magnets.

  • Magnet material

    In our encyclopedia you will find an overview of all available magnetic materials.

  • Magnet production

    In this post, you will learn all the necessary steps for producing magnets.

  • Magnetic energy

    Every magnetic field contains energy, also called magnetic energy. She is a constant in physics.

  • Magnetic field

    If magnetic forces are detected, the cause is a so-called magnetic field.

  • Magnetic flux density

    According to the definition, the magnetic flux density refers to the density of the field lines.

  • Magnetic Influence

    By definition, magnetic induction describes a phenomenon in which an external magnetic field acts on a body and magnetizes it for a certain period of time.

  • Magnetic moment

    A magnetic moment, also known as a magnetic dipole moment or magnetic torque, is a unit that describes the strength of a dipole.

  • Magnetic north pole

    The magnetic north pole is located where the magnetic field lines of the earth's magnetic field enter the earth's interior vertically to the earth's surface and is therefore not on the geographic north pole.

  • Magnetic polarization

    Magnetic polarization is a physical quantity. It relates to the electrodynamics of macroscopic matter and characterizes the magnetic flux density of a magnetic material in a vacuum when the magnetic field contribution is subtracted.

  • Magnetic saturation

    The maximum possible magnetization of a material is called saturation magnetization.

  • Magnetic shielding

    Magnetic shielding describes a process in which a magnetic field is excluded from a specific area by deliberately redirecting its field lines.

  • Magnetic substances

    Magnetic fields have an effect on all materials. However, not all materials act on magnets with the same intensity or are influenced by them in the same way.

  • Magnetic tension

    In electrodynamics, the term magnetic tension or magnetic flux is to be understood as a measure that describes the exciting force of the magnetic field strength.

  • Magnetism

    In general, magnetism is understood to be an invisible physical force that acts on matter.

  • Magnetization

    The magnetization makes material that was not magnetic before, magnetic.

  • Magnetization direction - How are the magnets magnetized?

    On which sides are the poles on? Where are the magnetic poles, or how are the different magnets magnetized?

  • Maxwell equations

    Maxwell's equations combine all valid formulas for magnetic fields in one theory.

  • Monopoly

    The following rule applies in physics: A magnet always consists of a north and a south pole. Two opposite charges form a so-called dipole moment.

  • Multipole

    Once there are multiple charge distributions, it's a multipole

  • NdFeB

    NdFeB is a material used to make magnets. The material consists of neodymium, iron and boron.

  • Neel temperature

    When an antiferromagnet reaches its transition temperature, it becomes a paramagnet. The Néel temperature describes the phenomenon.

  • Neodymium

    NdFeB is a material used to make magnets. The material consists of neodymium, iron and boron.

  • Nikola Tesla

    Physicist and electrical engineer Nikola Tesla made many groundbreaking inventions. More in the dictionary!

  • North pole and south pole of magnets

    These are the respective ends, which are also collectively called magnetic poles. Both a magnetic north pole and a magnetic south pole are also present in the earth's magnetic field.

  • Oersted

    The oersted unit is used to measure magnetic fields.

  • Operating temperature

    The maximum temperature a magnet can withstand before it loses its magnetic properties.

  • Paramagnetism

    Substances associated with paramagnetism require an external magnetic field for magnetization.

  • Pauli principle

    The Pauli principle - also called "Pauli ban" and "Paul's exclusion principle" - is a law of physics.

  • Permanent magnet

    A permanent magnet is a material from which a magnetic force always emanates.

  • Permeability

    According to the definition, the magnetic permeability is a physical unit that has the symbol µ. It is similar to susceptibility and indicates how permeable a material is to magnetic flux density.

  • Physical properties of neodymium magnets

    You can find the physical properties of neodymium magnets in our dictionary!

  • Plus and minus poles of magnets

    Fixed colors are assigned to the plus and minus poles of a magnet to make them easier to identify. The positive pole of a magnet is marked red and the negative pole green.

  • Quality

    The quality or magnetic quality is an indicator for the energy content of a magnet.

  • Reinforce magnets

    Magnets can be reinforced in different ways. For example, you can increase the number of magnets used and combine their magnetic fields into a stronger field.

  • Remanence

    The term remanence, or remanence flux density, describes the magnetization of a ferromagnetic material after the external magnetic field has been switched off.

  • Right-hand rule

    The right-hand rule (or three-finger rule) is an aid that illustrates vectors within a three-dimensional coordinate system.

  • Ringmagnet

    Ring magnets can be made of ferrite or neodymium or NdFeB (neodymium-iron-boron) and, like most magnets, have a nickel-plated coating to protect against oxidation.

  • Samarium Cobalt Magnets

    Samarium cobalt (SmCo) enables strong permanent magnets with high energy density and high operating temperatures.

  • Santoprene ®

    Plastics can be divided into different types depending on their nature. The most important distinguishing criteria include formability, hardness, elasticity, breaking strength as well as temperature and heat resistance.

  • SmCo

    Samarium cobalt (SmCo) enables strong permanent magnets with high energy density and high operating temperature.

  • Spins

    In physics, the own angular momentum of individual particles is called "spin" (in English "rotation"). This is a quantum mechanical theory.

  • Superconductor

    The ohmic resistance of a superconductor is zero.

  • Susceptibility

    The word susceptibility comes from the Latin: susceptibilitas ‘for transferability’ and describes a physical quantity without unit, with which the magnetizability of matter within the magnetic flux density can be specified.

  • Tesla (unit)

    Tesla is a unit of magnetic flux density.

  • Weiß' districts

    In magnetism, Weiß' districts (or Weiß areas) are delimited areas with the same polarization.