I have read that the lines of force in (abruptly turned off) water can brake a glass if placed in the lines of force path.
Once again, can we "load a coil" , collapse the load but shut the drain before it collapses totally and be set to capture what ever it may generate? I will forgo diagramming this, ms paint is not easy to draw with for me.
page two of this gets into such a scheme modeling water hammer with electricity.
http://www.energeticforum.com/renewable-energy/5952-capacitive-sink-hole.html