it is interesting i could not find many particle-particle simulators that simulate electrical fields even thought dynamics is pretty similar to that of planetary orbitals. there are few i could find but they are mostly 2D and defining problem in mathematical/geometrical terms, with sin/cos or some harmonic oscillator functions. none, however, i could find that simulate CLASSICAL ELECTRODYNAMICS (Stochastic El.Dynm. - SED) in 3D n-body system and even less to include MAGNETIC FIELDS, which are the effect of moving electric fields, says Lorentz and friends... this is kind of situation and type of particles i want to simulate: http://en.wikipedia.org/wiki/Magnetic_field You may have mused in the past, why one of my ....., or my girlfriend's .... is smaller than the other? well, look at that photo above, CHIRALITY is built-in. this universe is rather quier, it pulls on one side more than on the other. breaking of the symmetry... - CHARGES & MAGNETO-ELECTRIC FIELD FORCES - Magnetic Fields - test1 http://www.youtube.com/watch?v=DUNP4z-Vaac Electric and Magnetic Fields: Positron & Electron do the helix dance http://www.youtube.com/watch?v=JpI-klsq9nQ DIPOLE MAGNETIC FIELDS due to moving electric charges (not spin yet)... HydrogZen-2 http://www.youtube.com/watch?v=2bIaGw3V6OQ HydrogZen-1, Spontaneous formation of NEUTRAL Quazi-Hydrogen atoms http://www.youtube.com/watch?v=aYBMrGM6IpM - MASS & GRAVITY FIELD FORCE - Chaos in a Box: Inverse Square and Fractal kind of Randomness http://video.google.com/videoplay?docid=4342269507182595610 little twitching worms, all right, lets see how does it compare... http://www.bo.infn.it/antares/bolle_proc/foto.html in essence, i hope to be able to manage and somehow force these virtual atoms to aggregate with the use of "covalent bonds" by simulating it all with classical mechanics rather than quantum, which is contradictory to the "analog universe" somewhat.... anyway, any idea? any similar software out there?