Web watch

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

http://twitter.com/LovellTelescope

Twitter is a free web-based service for sharing short messages. Anyone can use it to provide frequent updates on his or her activities. Among the first science labs to “tweet” (that is, to post Twitter messages) is the Lovell Telescope at Jodrell Bank Observatory in northern England.

http://www.jove.com

Several scientific journals let authors post videos as online supplements. For the Journal of Visualized Experiments , the videos are the papers. Founded last year, the online journal has a biological focus, but some of the topics, such as microfluidics and cell motility, overlap with physics.

http://www.aip.org/history/newsletter

Twice a year the American Institute of Physics’ Center for History of Physics publishes the History Newsletter. Research and preservation, at the center and elsewhere, are the main topics. The latest issue appears this month. To catch up on back issues, visit the newsletter’s online archive.