Hello, this question may not be appropriate for this forum, but I feel that chemistry people are more likely to understand the basic operational characteristics of firecrackers. Say I have a standard obnoxious firecracker, like the ones that they sell connected in strings for your neighbors to detonate early in the morning. The firecracker is just a bunch of black powder in a cardboard tube, and the tube explodes when the fire reaches it. My question is how the tube explodes. Is the explosion somewhat omnidirectional, or does it favor the poles of the cardboard tube? By that I mean, if I were trying to pry open a door or something (not that I am, this is just to illustrate), would more force be directed onto the two surfaces if the firecracker was inserted lengthwise or on its end?