- The Foucault pendulum
- The maximum speed of a rowering boat
- The water propelled rocket and its simulator
- (2008 01 11) Bush in a quantum entangled state
- (2007 12 29) Corpuscular Rays in St. Peter's Basilica (the Vatican)
- (2007 12 13) A Nice Black Hole Merger Simulation
- (2007 04 22) Parhelic Circles, Ice Haloes and Sun dogs over Jerusalem
- (2006 05 26) Have you heard of the silent Earthquake?
