Fire Syringe Boyles Law
The principle being that reducing the volume of a gas increases it pressure and temperature, there by causing the paper or cotton to ignite till all the oxygen is used up. Amazing flashy demonstration of The Gas Law. This is used to demonstrate Gas Law and Diesel Engine Principle. Rapid compression of air in the chamber ignited a tiny small bit of tissue paper or a wisp of cotton. Comes complete with spare O Rings and cotton.