On 01/08/2017 03:35 PM, juan wrote: If some sort of magical mud magically liquified under a building, then the building would magically sink in a pool of mud. Especially when there are 'a couple' of videos showing a building that indeed seems to be 'sinking'. Ok class. Here we have a tuning fork (A440) and a glass of water. I will strike the tuning fork against a hard object ... like Juan's head ... (Get you hands out of your pants Juan and come here to the front of the class... Don't bother to wipe the stain on your trousers. We ALL know what you were doing back there Juan) and now I will put the end of the tuning fork I'm holding in a glass of water. Even with the damping effect of my fingers squeezed tight around it like you might hold your own cock when ur fapping Juan, (PAY ATTENTION JUAN!) you will still see ripples in the water. If there's solid material added, like Juan's teeny load of pubescent jizz, the net effect is a lowering of the frequency of the ripples due to change of mass, but the amplitude will approximately remain the same and if you let a piece of paper or light wood like a chunk of coffee stir stick float in the water, the objects will move up, down, and sideways, in relation to the ripples. That's your physics lesson for today children. Rr