To suggest topics or sites for Web Watch, please visit http://www.physicstoday.org/suggestwebwatch.html. Compiled and edited by Charles Day

Since 1970, physics professors at Eötvös University in Budapest, Hungary, have run the Rudolf Ortvay Competition in Physics. The problems, which are pitched at the high-school level, are designed to test physical reasoning at its most flexible and imaginative. This year’s contest starts on 27 October.

On 11 January 1952, Oak Ridge National Laboratory created a new research division devoted to the solid state. Mike Wilkinson, who directed the division in 1972–86, recounts in his online History of the Solid State Division how the division’s focus has broadened and flourished over the years.

The sometimes violent and damaging fluctuations in Earth’s magnetohydrodynamic environment are the subject of Space Weather , Sten Odenwald’s extensive online tutorial.

You do not currently have access to this content.