TUM physicists achieve solar system's weakest magnetic field

摘要

Electromagnetism represents one of the four fundamental interactions of nature, and ever since Maxwell described it mathematically in his equations, electrical engineers have put it to good use. Of course, the downside is that electromagnetism often appears where it's unwanted, to potentially deleterious effect. Consequently, engineers often find themselves having to simulate and measure electromagnetic interference, generate it to determine the susceptibility of equipment under test, and ultimately take some steps to minimize it. With regard to this last issue-at least with respect to the magnetic component of the EM wave-a group of physicists has implemented record-breaking magnetic shielding to achieve what they call the weakest magnetic field in the solar system, allowing them to conduct high-precision experiments free from magnetic interference. They have presented their work in the Journal of Applied Physics.