Auroras have inspired myths and portents for millennia—but only now, with modern technology dependent on electricity, are we appreciating their true power. The same forces which cause auroras also cause currents that can ...
Planetary Sciences
Jul 10, 2024
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768
Like a supersonic jet being blasted with high-speed winds, Earth is constantly being bombarded by a stream of charged particles from the sun known as solar wind.
Planetary Sciences
Aug 2, 2024
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224
The first rumblings of the sun's next 11-year solar cycle have been detected in sound waves inside our home star—even though it is only halfway through its current one.
Astronomy
Jul 18, 2024
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108
In copper-containing materials called cuprates, superconductivity competes with two properties called magnetic spin and electric charge density wave (CDW) order. These properties reveal different parts of the electrons in ...
Superconductivity
Jul 30, 2024
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126
The idea of time travel has dazzled sci-fi enthusiasts for years. Science tells us that traveling to the future is technically feasible, at least if you're willing to go near the speed of light, but going back in time is ...
Quantum Physics
Jul 10, 2024
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225
Electrons inherently carry both spin and orbital angular momentum (i.e., properties that help to understand the rotating motions and behavior of particles). While some physicists and engineers have been trying to leverage ...
By diving into the sun's corona, NASA's Parker Solar Probe has ruled out S-shaped bends in the sun's magnetic field as a cause of the corona's searing temperatures, according to University of Michigan research published in ...
Astronomy
Jul 30, 2024
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260
Traditional electronics use semiconductors to transmit data through bursts of charged carriers (electrons or holes) to convey messages in "1s" and "0s." Spintronic devices can process an order of magnitude more information ...
Condensed Matter
Jul 25, 2024
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44
With just a few drops of saliva and in a few minutes the presence of THC can be detected thanks to a technique developed by the universities of Cordoba and Valencia, making it possible to accelerate the analysis process and ...
Biochemistry
Jul 24, 2024
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230
MIT physicists and colleagues report new insights into exotic particles key to a form of magnetism that has attracted growing interest because it originates from ultrathin materials only a few atomic layers thick. The work, ...
General Physics
Aug 1, 2024
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241
In 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.
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