Related topics: magnetic field
Magnetism
hideIn physics, magnetism is one of the forces in which materials and moving charged particles exert attractive, repulsive force or moments on other materials or charged particles. Some well-known materials that exhibit easily detectable magnetic properties (called magnets) are nickel, iron, cobalt, gadolinium and their alloys; however, all materials are influenced to greater or lesser degree by the presence of a magnetic field. Substances that are negligibly affected by magnetic fields are known as non-magnetic substances. They include copper, aluminium, water, and gases.
Magnetism also has other definitions and descriptions in physics, particularly as one of the two components of electromagnetic waves such as light.
For more information about Magnetism, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with magnetic
Superconductor magnet spacecraft heat shield being developed
Nov 26, 2009 |
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(PhysOrg.com) -- European space agencies and an aerospace giant are developing a new re-entry heat shield that will use superconductor magnets to generate a magnetic field strong enough to deflect the superhot ...
Study: Believers' inferences about God's beliefs are uniquely egocentric
Medicine & Health / Psychology & Psychiatry
Nov 30, 2009 |
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Religious people tend to use their own beliefs as a guide in thinking about what God believes, but are less constrained when reasoning about other people's beliefs, according to new study published in the ...
Spin polarization achieved in room temperature silicon
Nov 27, 2009 |
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(PhysOrg.com) -- A group in The Netherlands has achieved a first: injection of spin-polarized electrons in silicon at room temperature. This has previously been observed only at extremely low temperatures, ...
Tiny magnetic discs could kill cancer cells: study
Nanotechnology / Bio & Medicine
Nov 29, 2009 |
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Tiny magnetic discs just a millionth of a metre in diameter could be used to used to kill cancer cells, according to a study published on Sunday.
A see-through surprise: Scientists make solid material transparent to terahertz waves
Dec 07, 2009 |
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Very often in science, the unexpected discovery turns out to be the most significant. Rice University Professor Junichiro Kono and his team weren't looking for a breakthrough in the transmission of terahertz signals, but ...
First black holes may have incubated in giant, starlike cocoons
Nov 24, 2009 |
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(PhysOrg.com) -- The first large black holes in the universe likely formed and grew deep inside gigantic, starlike cocoons that smothered their powerful x-ray radiation and prevented surrounding gases from ...
Researchers create 'synthetic magnetic fields' for neutral atoms
Dec 02, 2009 |
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(PhysOrg.com) -- Achieving an important new capability in ultracold atomic gases, researchers at the Joint Quantum Institute, a collaboration of the National Institute of Standards and Technology and the University ...
Wizard at circuits, physics
Dec 03, 2009 |
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(PhysOrg.com) -- Donhee Ham, Gordon McKay Professor of Electrical Engineering and Applied Physics, uses his personal energy and understanding of physics to design innovative integrated circuits.
An Advance in Superconducting Magnet Technology Opens the Door for More Powerful Colliders
Dec 16, 2009 |
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(PhysOrg.com) -- Preparing for as much as a 10-fold increase in the Large Hadron Collider's luminosity within the next decade, U.S. scientists and engineers have demonstrated a powerful magnet based on an ...
Tiny nano-electromagnets turn a cloak of invisibility into a possibility
Dec 22, 2009 |
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A team of researchers at the FOM institute AMOLF (The Netherlands) has succeeded for the first time in powering an energy transfer between nano-electromagnets with the magnetic field of light.
Toshiba develops essential technology for spintronics-based MOS field-effect transistor
Dec 09, 2009 |
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(PhysOrg.com) -- Toshiba Corporation today announced that it has developed MOSFET cell based on spin transport electronics, or spintronics, an advanced semiconductor technology that makes use of the spin and ...
Cassini Captures Ghostly Dance of Saturn's Northern Lights (w/ Video)
Space & Earth / Space Exploration
Nov 24, 2009 |
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(PhysOrg.com) -- In the first video showing the auroras above the northern latitudes of Saturn, Cassini has spotted the tallest known "northern lights" in the solar system, flickering in shape and brightness ...
Magnetic Power Revealed in Gamma-Ray Burst Jet
Dec 09, 2009 |
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(PhysOrg.com) -- A specialized camera on a telescope operated by U.K. astronomers from Liverpool has made the first measurement of magnetic fields in the afterglow of a gamma-ray burst (GRB). The result is ...
The Queen and I: How autistic brain distinguishes oneself from others
Medicine & Health / Neuroscience
Dec 14, 2009 |
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Scientists at the University of Cambridge have discovered that the brains of individuals with autism are less active when engaged in self-reflective thought. The study published today in the journal Brain provid ...
Microscopic gyroscopes, the key for motion sensing
Dec 09, 2009 |
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(PhysOrg.com) -- Tiny devices made possible by combining the latest advances in mechanical and electronics technology could be at the heart of next-generation personal navigation and vehicle stabilisation ...
