shockwave

nothing says freedom like a really big explosion of old ammo. in this video we can clearly see what happens when something is detonated at a very high velocity. in the first few seconds of the clip we are able to see the shockwave. this shockwave occurs when an object is moving so fast through a medium that the medium does not have time to react, so when it finally does react it is almost instantaneous. we see the air almost instantly react to the massive amounts of heat and pressure that built up in the explosion. the second video is a good example of waves in the air. the explosion sets out a pulse in all directions creating lateral waves causing the air to compress and decompress very rapidly. this is clearly shown in the dirt on the ground as the air moves past it.