G+_George Kozi Posted September 7, 2013 Share Posted September 7, 2013 Okay you science minded people, this looks all odd and wrong to me. Can you see why? Originally shared by Jason Wiley BOOM!! Link to comment Share on other sites More sharing options...
G+_Jeff Stevens Posted September 7, 2013 Share Posted September 7, 2013 Looks real enough to me. Source: Link to comment Share on other sites More sharing options...
G+_George Kozi Posted September 7, 2013 Author Share Posted September 7, 2013 what kind of weirdass bubbles move downwards? Link to comment Share on other sites More sharing options...
G+_Joshua “Wizdum” Burgess Posted September 7, 2013 Share Posted September 7, 2013 George Kozi Bubbles that are full of lead and gunpowder? Link to comment Share on other sites More sharing options...
G+_George Kozi Posted September 7, 2013 Author Share Posted September 7, 2013 lol. nah the gunpowder has already burned off. This downwards movement would suggest to me that it was filmed upside down, but then the surface ripples are in the wrong place. Link to comment Share on other sites More sharing options...
G+_Joshua “Wizdum” Burgess Posted September 7, 2013 Share Posted September 7, 2013 George Kozi A lot of gunpowder doesn't burn when a gun is fired, thats why regular maintenance is required. Now add to that the fact that the gun is submerged and a lot of the powder is going to be wet... Link to comment Share on other sites More sharing options...
G+_Nestor Custodio Posted September 7, 2013 Share Posted September 7, 2013 Agreed, this looks suspect. Link to comment Share on other sites More sharing options...
G+_Matthew Curry Posted September 7, 2013 Share Posted September 7, 2013 bubbles go the wrong way... Link to comment Share on other sites More sharing options...
G+_Justin Marks Posted September 7, 2013 Share Posted September 7, 2013 The camera is upside down. Link to comment Share on other sites More sharing options...
G+_George Kozi Posted September 7, 2013 Author Share Posted September 7, 2013 it must indeed be the shock wave that hits the surface from below, and blows back downwards. and because there is no reflective surface below (nothing to compensate), the net result is that the bubbles move towards the bottom. Link to comment Share on other sites More sharing options...
G+_Tycho Aussie Posted September 7, 2013 Share Posted September 7, 2013 Trajectory of the projectile also looks to be pointed slightly downward, so it looks right to me. Link to comment Share on other sites More sharing options...
G+_Eng. Jorge Santana Posted September 7, 2013 Share Posted September 7, 2013 Water is an incompressible fluid when the gun fires the displaced water refills the area of the explosion and what's left is the powder. It's real... Link to comment Share on other sites More sharing options...
G+_Michael Tonge Posted September 7, 2013 Share Posted September 7, 2013 This is quite a good demonstration of open circuit reflection of a wave. When the wave hits the surface (open circuit), it is reflected back. The same would happen if the wave hit a solid surface (short circuit). This effect is what makes antennas work. Link to comment Share on other sites More sharing options...
G+_Tim Allen Posted September 7, 2013 Share Posted September 7, 2013 There probably was little to no air left in the gun, so the bubbles were just being created by displacement and wouldn't necessarily need to go up. At least that's what I'd think. Link to comment Share on other sites More sharing options...
G+_John Mink Posted September 7, 2013 Share Posted September 7, 2013 Michael Tonge SWR analysis of gunfire bubbles, melikes! Link to comment Share on other sites More sharing options...
G+_Michael Tonge Posted September 7, 2013 Share Posted September 7, 2013 John Mink Well it's not really a standing wave, but you get the idea. :o) Link to comment Share on other sites More sharing options...
G+_John Mink Posted September 7, 2013 Share Posted September 7, 2013 Michael Tonge it's a "shooting wave" ^_^ but yeah, I know what you mean. Link to comment Share on other sites More sharing options...
G+_Eirik Havre Posted September 7, 2013 Share Posted September 7, 2013 Are you talking about the bubbles expanding collapsing then expanding again? This video explains it: Link to comment Share on other sites More sharing options...
G+_Eirik Havre Posted September 7, 2013 Share Posted September 7, 2013 This is the video your gif is from: Link to comment Share on other sites More sharing options...
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