magnet wikipedia the free encyclopedia

  • Magnetic resonance imagingWikipedia the free encyclopedia

    Template Infobox diagnostic Magnetic resonance imaging (MRI) nuclear magnetic resonance imaging (NMRI) or magnetic resonance tomography (MRT) is a medical imaging technique used in radiology to investigate the anatomy and physiology of the body in both health and disease. MRI scanners use strong magnetic fields and radio waves to form images of the body

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  • ElectromagnetWikipedia the free encyclopedia

    From Wikipedia the free encyclopedia. An electromagnet is a type of magnet in which the magnetic field is produced by electric current. The magnetic field disappears when the current is turned off. Electromagnets are widely used as components of other electrical devices such as motors

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  • ElectromagnetSimple English Wikipedia the free

    An electromagnet is useful because it can be turned on and off easily (using an electric current) whereas a permanent magnet cannot be turned off and will continue to affect its immediate environment. Different alloys act differently. Iron stops being an electromagnet

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  • Magnetic fieldSimple English Wikipedia the free

    Magnetic fields give power to other particles that are touching the magnetic field. In physics the magnetic field is a field that passes through space and which makes a magnetic force move electric charges and magnetic dipoles. Magnetic fields are around electric currents magnetic dipoles and changing electric fields.

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  • ComputerWikipedia the free encyclopediaMagnet

    ComputerWikipedia the free encyclopedia The first use of the word "computer" was recorded in 1613 in a book called "The yong mans gleanings" by English writer Richard Braithwait I haue read the truest computer of Times and the best Arithmetician that euer breathed and he reduceth thy dayes into a short number .

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  • Magnetic inclination Article about magnetic inclination

    Magnetic Inclination (or magnetic dip) the angle I between the intensity vector T of the geomagnetic field and the horizontal plane at a given point on the earth s surface. The magnetic inclination is measured upward and downward from the horizontal plane. It is positive when T is directed downward from the horizontal plane which is the case in the

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  • MagnetismSimple English Wikipedia the free encyclopedia

    Magnetic lines of force of a bar magnet shown by iron(Fe) filings on paper. A magnetized needle is floating in the air next to a metal ball. In physics magnetism is a force that can attract (pull closer) or repel (push away) objects that have a magnetic material like iron inside them (magnetic objects) simpler words it is a property of certain substances which pull closer or repel other

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  • Whitney M. Young Magnet High SchoolSimple English

    Whitney M. Young Magnet High School (commonly known simply as Whitney Young) is a public magnet high school located in the Near West Side neighbourhood in Chicago Illinois United States is operated by the Chicago Public Schools district.Whitney Young opened on September 3 1975 as the city s first public magnet high school.

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  • Magnetic resonance imagingWikipedia the free encyclopedia

    Magnetic resonance imaging (MRI) formerly referred to as magnetic resonance tomography (MRT) or nuclear magnetic resonance (NMR) is a method used to visualize the inside of living organisms as well as to detect the amount of bound water in geological structures is primarily used to demonstrate pathological or other physiological alterations of living tissues and is a commonly used form of

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  • Rare-earth magnetSimple English Wikipedia the free

    Rare-earth magnets are strong permanent magnets made from alloys of rare earth elements.. Developed in the 1970s and 80s rare-earth magnets are the strongest type of permanent magnets made. They have much stronger magnetic fields than other types such as ferrite or alnico magnets.. There are two types neodymium magnets and samarium-cobalt magnets. Some rare-earth magnets

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  • Magnetic fieldSimple English Wikipedia the free

    Magnetic fields give power to other particles that are touching the magnetic field. In physics the magnetic field is a field that passes through space and which makes a magnetic force move electric charges and magnetic dipoles. Magnetic fields are around electric currents magnetic dipoles and changing electric fields.

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  • MagnetWikipedia The Free Encyclopedia Magnet

    MagnetWikipedia The Free EncyclopediaFree download as PDF File (.pdf) Text File (.txt) or read online for free.

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  • Magnetic reluctanceWikipedia the free encyclopedia

    History . The term was coined in May 1888 by Oliver Heaviside. The notion of "magnetic resistance" was first mentioned by James Joule and the term "magnetomotive force" (MMF) was first named by Bosanquet. The idea for a magnetic flux law similar to Ohm s law for closed electric circuits is attributed to H. Rowland.. Reluctance is usually represented by a cursive capital .

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  • Magnetic Separation Wikipedia The Free Encyclopedia

    Magnetic separation Wikipedia the free encyclopedia Magnetic separation is a process in which magnetically susceptible material is extracted from a In this machine the raw ore after calcination was fed onto a moving belt which passed underneath two pairs of electromagnets under which.

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  • Magnetic resonance imagingWikipedia the free encyclopedia

    Magnetic resonance imaging (MRI) formerly referred to as magnetic resonance tomography (MRT) or nuclear magnetic resonance (NMR) is a method used to visualize the inside of living organisms as well as to detect the amount of bound water in geological structures is primarily used to demonstrate pathological or other physiological alterations of living tissues and is a

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  • MagnetismSimple English Wikipedia the free encyclopedia

    Magnetic lines of force of a bar magnet shown by iron(Fe) filings on paper. A magnetized needle is floating in the air next to a metal ball. In physics magnetism is a force that can attract (pull closer) or repel (push away) objects that have a magnetic material like iron inside them (magnetic objects) simpler words it is a property of certain substances which pull closer or repel other

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  • Wikipedia

    Wikipedia is a free online encyclopedia created and edited by volunteers around the world and hosted by the Wikimedia Foundation.

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  • Magnet therapyWikipedia the free encyclopedia Easy

    Magnet therapyWikipedia the free encyclopedia Magnet therapy magnetic therapy or magnotherapy is a pseudoscientific alternative medicine practice involving the use of static magnetic fields. Talk Magnet therapyWikipedia the free encyclopedia This is the talk page for discussing improvements to the Magnet therapy article.

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  • Excitation (magnetic)Simple English Wikipedia the free

    Excitation is a process to create a magnetic field from electric current.This process is used in electric machines (generators or motors) whose rotor spins in a magnetic field.This magnetic field can come from a permanent magnet or field coils. In the case of electric machine with field coils a current must flow to the coil to generate the magnetic field so that the field coils can act as a

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  • Functional magnetic resonance imagingWikipedia the

    Functional MRI or functional Magnetic Resonance Imaging (fMRI) is a type of specialized MRI scan. It measures the haemodynamic response related to neural activity in the brain or spinal cord of humans or other animals. It is one of the most recently developed forms of neuroimaging. Since the early 1990s fMRI has come to dominate the brain

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  • Magnet grate Article about magnet grate by The Free

    On its stand at K 2016 the company is running a working metal separator (a combination of a drawer magnet grate followed by a metal detector) as well as a Quicktron metal detector.

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  • Image Ceramic magnets.jpgWikipedia the free encyclopedia

    Permission is granted to copy distribute and/or modify this document under the terms of the GNU Free Documentation License Version 1.2 or any later version published by the Free Software Foundation with no Invariant Sections no Front-Cover Texts and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".

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  • Rare-earth magnetSimple English Wikipedia the free

    Rare-earth magnets are strong permanent magnets made from alloys of rare earth elements.. Developed in the 1970s and 80s rare-earth magnets are the strongest type of permanent magnets made. They have much stronger magnetic fields than other types such as ferrite or alnico magnets.. There are two types neodymium magnets and samarium-cobalt magnets. Some rare-earth magnets

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  • Magnetic axis Article about magnetic axis by The Free

    Consistent with previous observational studies of magnetic alignment in free-roaming vertebrates first- and second-order analyses show that corvids exhibit robust axial alignment corresponding with the north-south magnetic axis contrast when the data is pooled relative to the sun s azimuth the first-order analysis is indistinguishable from random and the second

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  • Permanent Magnet Article about Permanent Magnet by The

    permanent magnet ′pər·mə·nənt ′mag·nət (electromagnetism) A piece of hardened steel or other magnetic material that has been strongly magnetized and retains its magnetism indefinitely. Abbreviated PM. Permanent Magnet an article of a specific shape (such as a horseshoe or bar) made of previously magnetized ferromagnets or ferrimagnets that

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  • Magnetic reluctanceSimple English Wikipedia the free

    Magnetic reluctance or magnetic resistance is a measurement used in the analysis of magnetic circuits is like resistance in an electrical circuit but rather than dissipating magnetic energy it stores magnetic energy.As an electric field causes an electric current to follow the path of least resistance a magnetic field causes magnetic flux to follow the path of least magnetic reluctance.

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  • EnvironmentSimple English Wikipedia the free encyclopedia

    Electromagnetic environment is radio waves and other electromagnetic radiation and magnetic fields. The environment of galaxy refers to conditions oshama namberdar is just an employee. In psychology and medicine a person s environment is the people physical things and places that the person lives with. The environment affects the growth and

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  • Talk MagnetSimple English Wikipedia the free encyclopedia

    Talk Magnet. Jump to navigation Jump to search = A magnet is a piece of matter that already has a magnetic field. Magnets exist in nature like the earth but are more commonly created by processing materials so as to maximize their magnetic properties. The magnetic field created by a magnet is a closed loop like a rubber band in space.

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  • MagnetismSimple English Wikipedia the free encyclopedia

    Magnetism can be made by a permanent magnet or by electricity in a wire. This is called an electromagnet. When magnets are put near magnetic objects the magnet and the object are pulled toward each other. This is called magnetic attraction. Magnets can also repel (push away) other magnets.

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  • ElectromagnetSimple English Wikipedia the free

    An electromagnet is useful because it can be turned on and off easily (using an electric current) whereas a permanent magnet cannot be turned off and will continue to affect its immediate environment. Different alloys act differently. Iron stops being an electromagnet

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  • Wikipedia Article about Wikipedia by The Free Dictionary

    Wikipedia The world s largest encyclopedia available on the Web at wikipedia. Wikipedia is user generated and anyone can create or edit an article (see wiki).Founded in 2001 by Jimmy Wales as of 2019 there are nearly six million articles in English as well as articles in every language on earth.

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  • Magnetic reluctanceSimple English Wikipedia the free

    Magnetic reluctance or magnetic resistance is a measurement used in the analysis of magnetic circuits is like resistance in an electrical circuit but rather than dissipating magnetic energy it stores magnetic energy.As an electric field causes an electric current to follow the path of least resistance a magnetic field causes magnetic flux to follow the path of least magnetic reluctance.

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  • Magnetic field lineSimple English Wikipedia the free

    A magnetic field line or magnetic flux line shows the direction of a magnet s force and the strength of a magnet. The idea of lines of force was invented by Michael Faraday. His theory is that all of reality is made up of force itself. His theory predicts that electricity light and gravity have finite propagation delays.

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  • Transcranial magnetic stimulationWikipedia the free

    Transcranial magnetic stimulation (TMS) is a noninvasive method to excite neurons in the brain weak electric currents are induced in the tissue by rapidly changing magnetic fields (electromagnetic induction).This way brain activity can be triggered with minimal discomfort and the functionality of the circuitry and connectivity of the brain can be studied.

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  • Magnetic refrigeration Wikipedia the free encyclopedia

    Magnetic refrigeration Wikipedia the free encyclopedia

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