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| [[File:lighterstill.jpg]][[File:Magnetism.jpg|right|frame]] | | [[File:lighterstill.jpg]][[File:Magnetism.jpg|right|frame]] |
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− | *Date: [http://www.wikipedia.org/wiki/17th_Century 1616] | + | *Date: [https://www.wikipedia.org/wiki/17th_Century 1616] |
| ==Definitions== | | ==Definitions== |
− | *1 a : a class of [[physical]] [[phenomena]] that include the [[attraction]] for iron observed in lodestone and a magnet, are inseparably [[associated]] with moving [http://www.wikipedia.org/wiki/Electricity electricity], are exhibited by both magnets and electric currents, and are characterized by fields of [[force]] | + | *1 a : a class of [[physical]] [[phenomena]] that include the [[attraction]] for iron observed in lodestone and a magnet, are inseparably [[associated]] with moving [https://www.wikipedia.org/wiki/Electricity electricity], are exhibited by both magnets and electric currents, and are characterized by fields of [[force]] |
| :b : a [[science]] that deals with magnetic [[phenomena]] | | :b : a [[science]] that deals with magnetic [[phenomena]] |
| *2 : an ability to [[attract]] or [[charm]] | | *2 : an ability to [[attract]] or [[charm]] |
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| ==Description== | | ==Description== |
− | The term '''magnetism''' is used to describe how [[materials]] [[respond]] on the microscopic level to an applied [http://en.wikipedia.org/wiki/Magnetic_field magnetic field]; to categorize the magnetic [[phase]] of a material. For example, the most well known form of magnetism is [http://en.wikipedia.org/wiki/Ferromagnetism ferromagnetism] such that some ferromagnetic [[materials]] produce their own persistent magnetic field. However, all materials are [[influenced]] to greater or lesser [[degree]] by the [[presence]] of a magnetic field. Some are attracted to a magnetic field ([http://en.wikipedia.org/wiki/Paramagnetism paramagnetism]); others are repulsed by a magnetic field ([http://en.wikipedia.org/wiki/Diamagnetism diamagnetism]); others have a much more [[complex]] [[relationship]] with an applied magnetic field. Substances that are negligibly affected by magnetic fields are known as non-magnetic substances. They include copper, aluminium, water, gases, and plastic. | + | The term '''magnetism''' is used to describe how [[materials]] [[respond]] on the microscopic level to an applied [https://en.wikipedia.org/wiki/Magnetic_field magnetic field]; to categorize the magnetic [[phase]] of a material. For example, the most well known form of magnetism is [https://en.wikipedia.org/wiki/Ferromagnetism ferromagnetism] such that some ferromagnetic [[materials]] produce their own persistent magnetic field. However, all materials are [[influenced]] to greater or lesser [[degree]] by the [[presence]] of a magnetic field. Some are attracted to a magnetic field ([https://en.wikipedia.org/wiki/Paramagnetism paramagnetism]); others are repulsed by a magnetic field ([https://en.wikipedia.org/wiki/Diamagnetism diamagnetism]); others have a much more [[complex]] [[relationship]] with an applied magnetic field. Substances that are negligibly affected by magnetic fields are known as non-magnetic substances. They include copper, aluminium, water, gases, and plastic. |
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− | The magnetic state (or phase) of a [[material]] depends on temperature (and other variables such as pressure and applied magnetic field) so that a material may exhibit more than one form of magnetism depending on its temperature, etc.[http://en.wikipedia.org/wiki/Magnetism] | + | The magnetic state (or phase) of a [[material]] depends on temperature (and other variables such as pressure and applied magnetic field) so that a material may exhibit more than one form of magnetism depending on its temperature, etc.[https://en.wikipedia.org/wiki/Magnetism] |
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| [[Category: Physics]] | | [[Category: Physics]] |