I'm sure some of us remember these brightly colored blasters that lined our toy boxes as kids, and the backyard shenanigans shared with friends. But what many of us probably didn't realize is that what we held in our hands was a spring loaded product of physics. When pumped back, a spring inside the blaster would be compressed, and held in this state by a small contraption attached to the trigger. When the trigger is pulled afterwards, this contraption moves out of the way, allowing the spring to return to its equilibrium position. A Platform on the end of the spring then uses the spring's restoring force to push air from inside the blaster, which propels a foam dart forward and out the front. From there, gravity takes over until the dart hits the ground, or another surface.