Virtual Science Labs

http://en.wikipedia.org/wiki/Virtual_Laboratory
http://en.wikipedia.org/wiki/Virtual_Labs_(India)
http://www.vlab.co.in/lab_ready_for_use.php#ba1
http://virlab.virginia.edu/VL/home.htm
http://www.virtlab.com/index.aspx
http://www.npl.co.uk/educate-explore/virtual-physical-laboratory/