Sunspots mark areas on the Sun's surface where the star's magnetic field becomes so intense that a buoyant tube of magnetism literally pops through the Sun's surface. The magnetic field disrupts the outward convection of heat, resulting in dark Earth-sized splotches that are some 2,500 degrees Celsius cooler than the rest of the solar surface. Periods of high sunspot activity also usher in an increase in the number of solar flares--intense bursts of magnetic energy hurling energetic particles out from the Sun. When these flares reach the Earth's magnetic field, they can wreak havoc with electrical lines, communications satellites, and even automatic garage door openers. John H. Thomas, an astrophysicist at the University of Rochester, and Benjamin Montesinos of Madrid's Laboratory for Space Astrophysics and Fundamental Physics have developed what they say is a more realistic version of the siphon-flow model, which predicts how gas flows from sunspots into the solar atmosphere. The work could also offer insights into other astrophysical processes that involve strong magnetic fields and jets of gas, such as when stars form or die--an area that's the focus of much research. For more information, contact John H. Thomas at (716) 275-6717.
Engineers at Fuel Cell Energy have found a way to take advantage of a side reaction, unique to their carbonate fuel cell that has nothing to do with energy production, as a potential, cost-effective solution to capturing carbon from fossil fuel power plants.
This is part one of an article discussing the University of Washington’s nationally ranked FSAE electric car (eCar) and combustible car (cCar). Stay tuned for part two, tomorrow, which will discuss the four unique PCBs used in both the eCar and cCars.
Researchers working with additive manufacturing have said multimaterial techniques will allow industry “to fabricate materials with combinations of density, strength, and thermal expansion that do not exist [yet].”
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