We use a very small piece of flash paper to make the fire syringe action
visible. You can get sheets of flash paper from your local magician
supply. Karl
Dr. Karl I. Trappe Desk Phone: (512) 471-4152
Physics Dept, Mail Stop C-1600 Demo Office: (512) 471-5411
The University of Texas at Austin Home Phone: (512) 264-1616
Austin, Texas 78712-1081