Earlier today, I worked on building this coil gun (which basically uses electromagnetic pulses to launch projectiles) with one of my friends earlier today. First, we removed the flash capacitors from disposable cameras, which actually hold quite a bit of energy! Here is a photograph of the capacitor being discharged, so you don't shock the daylights out of yourself! I honestly inadvertently zapped myself pretty good when I touched the wrong part of the circuit board, when the capacitor was fully charged! Next, we discombobulated an Airsoft gun, which was the framework for the new product. We wired up conntections to a switch, set off by the trigger. This then sends a electric pulse through the copper wire, generating a magnetic field, and launching the chosen projectile. The gun took a few hours to build, and do to a single faulty connection, still has some work to be done.