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88 DESIGN007 MAGAZINE I AUGUST 2021 it should end with a quote from another great mind, Supreme Court Justice Oliver Wendell Holmes, who astutely observed, "Man's mind, stretched by a new idea, never goes back to its original dimensions." It seems doubly fitting, knowing that stretching also helps one to stay flexible in body as well. FLEX007 References 1. John F Kennedy paraphrased Shaw in his mem- orable first and, sadly, only inaugural speech and often is given credit as the first to present the idea. Joe Fjelstad is founder and CEO of Verdant Electronics and an international authority and innovator in the field of electronic interconnection and packaging technologies with more than 185 patents issued or pending. To read past columns or contact Fjelstad, click here. Download your free copy of Fjelstad's book Flexible Circuit Technology, 4 th Edition, and watch his in-depth workshop series "Flexible Circuit Technology." magnetic fields difficult to produce. Using numerical simulations and theoretical models, the researchers found that high-energy electrons can actually expel the background plasma to create a hole, making it harder for the plasma to cancel their current. "As the current is exposed, strong magnetic fields are produced that further push the background plasma away, creating bigger holes, leaving more of the current exposed, and producing even stron- ger magnetic fields," says Ryan Peterson, a PhD stu- dent at Stanford University and SLAC who is the first author of the publication. The researchers hope to find ways to reproduce it in a laboratory experiment, which would be an important step in developing compact high-energy radiation sources. Those sources would allow scien- tists to take pictures of matter on the atomic scale with extremely high resolution for applications in medicine, biology and materials research. (Source: SLAC National Accelerator Laboratory) Electrons and ions. The motion of these charged particles produces magnetic fields that form an interstellar magnetic web. These magnetic fields are important for a wide range of processes, from the shaping of galaxies and the formation of stars to controlling the motion and acceleration of high- energy particles like cosmic rays—protons and elec- trons that zoom through the universe at nearly the speed of light. Until now, the way energetic particles affect mag- netic fields was not well understood. In a paper published on the cover of Physical Review Letters, researchers from the Department of Energy's SLAC National Accelerator Laboratory show how electrons can amplify magnetic fields to much higher intensi- ties than were previously known. The motion of electrons carries an electrical current, which produces magnetic fields. Usually, charges from background plasma interfere with this current by moving in a way to cancel it, making strong Scientists Discover How High-Energy Electrons Strengthen Magnetic Fields

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