Schock Wave

Who knew that more than 12 years ago, in a place extremely frequented by the public (Lido di Venezia beach, next to the Venice Film Festival building) a banal tourist filming, with a contemplative atmosphere and live sound, would become a video subject in the exhibition of girl. The contemplative is given by the invariable rhythm of the waves of the sea broken in the bare feet drowned in the sand, among the shells, innocent voices and floating remains of seaweed, like the dance of a blues of lovers... A small touch of the infinite - the poet would say, maybe I, maybe you... The ending is short and tragic, worthy of a blockbuster screenplay. Heard helicopter blades cover the live sound, then everything goes red. Problem: to calculate the distance of the shock wave between the place of the explosion and the place of the person filming, knowing that the shock wave has a conical shape along the trajectory of its movement and is formed when a body - a bomb, in the situation described above up – travels at a speed v greater than the speed of sound c. The angle formed by the displacement axis with the wavefront is: sin α = c/v, also called the Mach number, after which the speeds can be subsonic or supersonic. With the mention of the fact that shock wave propagation is an irreversible thermodynamic process with energy dissipation. The speed of sound in air is 340 m/s, and in water, at 20°C, it is 1482 m/s. How long does the beach remain empty? This video contains some AI generated scenes.