You can see invisible electric field - if you use "Electric Field". It is an excellent tool forvisualizing electric field and equipotential lines. Visibility of field line and potential surface depends on their magnitude. You can put unlimited number of charges in the field. Also, it can simulate electric field of charged condenser, charged wire and charged dielectric objects.
Full Specifications
What's new in version 2.01
General
ReleaseNovember 7, 2008
Date AddedOctober 5, 2006
Version2.01
Operating Systems
Operating SystemsWindows 95, Windows 2000, Windows Vista, Windows 98, Windows Me, Windows, Windows XP, Windows NT