Ancient rocks reveal that Earth’s magnetic field during the Ediacaran may not have been chaotic…
Browsing: Magnetic Fields
Magnetic fields are invisible forces that exert influence on magnetic materials and charged particles. They are produced by moving electric charges, such as the flow of electrons in a wire, or by intrinsic magnetic properties of materials like iron. The Earth itself has a magnetic field, generated by the movement of molten iron in its outer core, which protects the planet from solar and cosmic radiation and is responsible for phenomena such as the auroras. Magnetic fields are quantified by their strength and direction, and they are depicted visually through field lines that emerge from north magnetic poles and enter south magnetic poles. These fields play crucial roles in various technologies, from simple compasses for navigation to complex applications like magnetic resonance imaging (MRI) in medical diagnostics. Additionally, magnetic fields are fundamental in physics, influencing many processes from the atomic to the cosmic scale, including the behavior of plasmas in stars and the interstellar medium.
New observations are helping scientists peer beneath the Sun’s surface, revealing where its magnetic activity…
Deep beneath the ocean floor, ancient sediments hint that Earth’s magnetic field sometimes changed far…
Ancient magnetic fossils reveal that animal navigation using Earth’s magnetic field may have evolved far…
An Auburn University study finds that magnetic fields can guide electrons in plasma much like…
Researchers have identified an unexpected link between atomic magnetism and carbon mobility in steel. Researchers…
A detailed suite of simulations conducted by astrophysicists at the Flatiron Institute and their collaborators…
Scientists found that carbon enabled Earth’s core to solidify. Without it, the inner core may…
Seismic studies reveal Mars may have a solid inner core. The result deepens knowledge of…
The early Universe hosted ultra-weak magnetic fields that still shaped cosmic structures. New simulations establish…
Their results pave the way for developing advanced electronic devices that rely on nonmagnetic materials.…
Caltech experiments uncovered a stable double helix state in plasma flux ropes. The same principles…
UC Irvine scientists identified a novel quantum state with potential for energy-efficient devices. Its radiation…
A close-in exoplanet is triggering stellar flares and self-destructing. This is the first direct evidence…
The research team has identified atacamite as a material with magnetocaloric properties. Natural crystals have…
Fraunhofer IAF presents compact integrated quantum sensor at World of Quantum 2025 The highly integrated…
Quantum magnetometers can detect incredibly small changes in magnetic fields by tapping into the strange…
Tiny magnetic “flowers” engineered by physicist Anna Palau are redefining how we manipulate magnetic fields.…