The University of Colorado Office of Information Technology will be performing a scheduled system reboot of the PhET server on Thursday, January 10 at 11:00 PM Mountain Standard Time. During this time, PhET (http://phet.colorado.edu) will experience periods of unavailability. We expect that the outage will last only 10 minutes and that we will be back online very quickly. However, if you experience issues, please e-mail the PhET Help Desk at firstname.lastname@example.org.
Thanks for your patience during our system maintenance.