The first legal gay marriage in the United States occurred in Massachusetts in 2004. Since then, countless others have tied the knot. Scholars decide whether gay marriage should be legal by reading a history of the issue, analyzing the...

A simulation which shows the field of a magnetic dipole or quadrupole using compass needles indicating direction and relative field strength. Change the angular orientation of the dipole, and a movable compass shows the magnetic field...

Change the size and orientation of a conducting loop falling out of a region of uniform magnetic field. Then, the data is plotted on an interactive graph.

An index to Perl software programs, resources, and libraries available on the World Wide Web.

Site offers wonderful illustrations of Perry's expedition to Japan with brief descriptions.