How a Grenade Works!

Knowing how the grenade works will help to avoid accidents when using fireworks and firecrackers.
In this video you will see how the F-1 Grenade works! The grenade shown in the video is made of cardboard and matches and is not capable of causing serious harm, but you should not repeat what you saw at home. It is not forbidden to show how the grenade works. A description of this process can even be found on Wikipedia en.wikipedia.o... and even in school textbooks in some countries. In addition, all freely sold fireworks and petards are based on this principle.