Symmetry Magazine
Symmetry Magazine: Explain It in 60 Seconds: Virtual Particles
Virtual particles, described here, are particles that appear and disappear so rapidly they can be detected only by their effect on other particles. "Explain It In 60 Seconds" is an article series that aims to summarize in a few...
Khan Academy
Khan Academy: Start: How Do Computers Simulate the Motion of Virtual Particles?
In this lesson we'll explore how we use fairly simple physics to draw particles which move according to the forces we feel in the real world (such as wind & gravity).