Web Watch

http://www.heavens-above.com

The Heavens-Above Web site provides a range of tools for calculating the visibility of the Hubble Space Telescope and other orbiting spacecraft. Developed and maintained by Chris Peat of the company Heavens-Above, the site and its underlying software generate charts and tables in real time for your location and time zone.

http://www.imss.fi.it

Housed in a Florentine palazzo, the Institute and Museum of the History of Science is both a noted repository of science artifacts and a research institute. Many of its holdings can be viewed online, along with explanatory notes in Italian and English.

http://bethe.cornell.edu

Five years ago, at the age of 93, Hans Bethe lectured the members of his retirement community in Ithaca, New York, on quantum mechanics. Three Lectures by Hans Bethe are now available online. Bethe’s biographer, Silvan Schweber, provides an introduction, and his former postdoc Edwin Salpeter provides an appreciation.

To suggest topics or sites for Web Watch, please visit http://www.physicstoday.org/suggestwebwatch.html .