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How Magnetic Fields Shape Core Flows
The Earth's inner core is a hot, solid iron-rich alloy surrounded by a cooler, liquid outer core. The convection and rotation in this outer core creates our magnetic fields, but those magnetic fields can, in turn, affect the liquid metal flowing inside the Earth. (Image credit: C. Finley et al.; research credit: A. Pothérat et al.; via APS Physics) Read the full article
#fluid dynamics#magnetohydrodynamics#physics#planetary science#rotating flow#science#Taylor column#Taylor-Proudman theorem
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Ember Bursts Spread Wildfires
In a wildfire, a burst of embers lofted upward can travel far, starting a new spot fire when they land. Although large ember bursts only happen occasionally, researchers found that these events -- with orders of magnitude more embers than usual -- play an outsized role in wildfire spread. (Image credit: C. Cook; research credit: A. Peterson and T. Banerjee; via Physics World) Read the full article
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The Taum Sauk Dam Failure and Its Legacy
Managing an electrical grid is all about balancing the electricity that plants can supply with the instantaneous demands of consumers. If there's more power available than people need, it needs to get stored somehow. And for decades, the best way to store that excess supply has been in hydroelectric reservoirs like at the Taum Sauk Dam. (Video and image credit: Practical Engineering) Read the full article
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"Dew Point" Deposits Droplets
Artist Lily Clark loves to work in water. One of her recent sculptures, "Dew Point," uses superhydrophobic ceramic to grow and manipulate water droplets over and over and over. (Video credit: L. Turczan; artwork by: L. Clark; via Colossal) Read the full article
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Ghosts of Rivers Past
Artist Dan Coe uses lidar data to create portraits of rivers and their past meanders. Used aerially, lidar produces high-resolution elevation data that provides a glimpse of features that are currently hidden beneath vegetation. (Image credit: D. Coe; via Colossal) Read the full article
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