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Tag archives: electricity and magnetism

Making noise in the quietest room in the Netherlands

Wiggling electrons: an undulator at one of FELIX’s free-electron lasers.

By Tim Wogan in Nijmegen, the Netherlands

Tucked away near the German border is the Dutch city of Nijmegen and Radboud University, which has a treasure trove of fantastical physics facilities. I was in town for a two-day, whistle-stop tour of the university that included the the opening of the FELIX facility. FELIX stands for “free-electron laser for infrared experiments laboratory”. It is a  cavernous chamber housing four free-electron lasers that together can generate high-intensity, tunable radiation with wavelengths anywhere between 3–1500 μm. Something, I was told, that is possible nowhere else in the world.

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Getting into the mind of Maxwell

Malcolm Longair on the beauty of Maxwell's equations
Published 150 years ago, Maxwell's paper on electricity and magnetism remains hugely profound
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By Matin Durrani

In case you’ve forgotten – and shame on you if you have – 2015 has been designated the International Year of Light and Light-based Technologies (IYL 2015).  There’s been loads going on all over the globe, which you can follow on the excellent IYL 2015 blog, and we at Physics World have been in on the act too don’t forget. Our March 2015 issue was devoted to light and we also produced a digital-only collection of our 10 best features on light, which you can read free here.

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