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Scientists pinpoint release of energy that powered series of solar flares

Scientists pinpoint release of energy that powered series of solar flares

Science
Jan. 17 (UPI) -- Scientists have precisely pinpointed the explosive release of energy that powered a series of solar flares -- a first. The solar flares were originally recorded in 2017 by the Expanded Owens Valley Solar Array, EOVSA, a radio telescope operated by the New Jersey Institute of Technology. While studying solar activity, the radio telescope spotted the birth of a new region of magnetic energy adjacent to an existing sunspot. The explosion of energy sent extremely hot plasma spewing from the solar atmosphere out into space. Recently, scientists reexamined the data collected by the EOVSA, looking for unique patterns recorded in microwave spectrum. Until now, scientists have only been able to study solar flares by examining the electromagnetic signatures registered at the phot...
MIT scientists design tiny motors powered by light

MIT scientists design tiny motors powered by light

Science
June 30 (UPI) -- A team of engineers at MIT have simulated tiny motors powered by light.Scientists have created a variety of light-based contraptions, including tractor beams and tweezers. But these optical technologies often require a sophisticated laser beam or some other kind of expensive and complex light source."Our approach is to look at whether we can get all these interesting mechanical effects, but with very simple light," Ognjen Ilic, a postdoctoral researcher at MIT, said in a news update.Ilic and his colleagues focused on designing a particle that could be powered and manipulated by simple light sources. The scientists simulated asymmetric particles known as Janus particles. The two-faced particles boast a micrometer diameter and are composed of silica. Half of each particle is...