A procedural art widget drawing inspiration from bubble / cloud chambers used to study particle trajectories.
http://jsyang.ca/particletracks/
You can specify options to the particles
module via query string: see src/particles.js
for a comprehensive list of options and their effects.
** Ex: Start with 10000 particles **
http://jsyang.ca/particletracks/?count=10000
** Clear particle trails per frame and start with 5000 particles **
http://jsyang.ca/particletracks/?shouldClearTracksPerFrame=true&count=5000
** Set the maximum lifespan of a particle to 20 frames **
http://jsyang.ca/particletracks/?lifespan=20