The first and the fastest mechanical impulse, which will spread from the discharge impact site, is the supersonic (shock)wave, which is always highly accurate circle, and disappear after a few kilometers.
Ang unang at ang pinakamabilis na mechanical salpok, Aling ay kumalat paglabas mula sa site na epekto, ang Supersonic (shock) wave, Alin ang palaging mataas Tumpak na bilog, at mawala pagkatapos ng ilang kilometro.