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Laser Hints at Magnetism’s Origins

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OXFORD, England, Feb. 1, 2012 — Using a high-power laser to simulate the conditions under which the first galaxies formed, scientists may have uncovered a clue as to how magnetism originated in the universe. Magnetic fields exist throughout galactic and intergalactic space and in the stars and planets. The magnetic fields in our solar system shield us from the harmful effects of cosmic rays, allowing life to thrive. What is puzzling, however, is how they originated. A method for creating magnetic fields without a magnet has long been theorized, but until now, the process had not been demonstrated. On the left,...Read full article

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    Published: February 2012
    Glossary
    shock wave
    Interruption in the normal flow of a plasma or fluid characterized by sharp rises in velocity, temperature and pressure. As the shock passes into a gaseous compound, gas particles are heated and accelerated.
    Basic ScienceBiermann battery effectcarbon rodsenergyEnglandETH-ZurichEuropefirst galaxiesGianluca GregoriindustrialLaboratoire pour l’Utilisation de Lasers IntensesLaboratoire pour l’Utilisation de Lasers Intenses laser facilityLawrence Livermore National Laboratorymagnetic fieldsmagnetic seedsmagnetismorigin of magnetismOsaka UniversityOxford UniversityResearch & TechnologyRutherford Appleton Laboratoryshock waveUniversity of California Los AngelesUniversity of MichiganUniversity of StrathclydeUniversity of YorkLasers

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