Zero Point energy is energy with regards to a ZERO point.... The problem is to define the ZERO POINT, not to find the energy. The Universe is filled with energy, but to get it into a useful form, we need to move it from a state of high energy supply to a state of low energy supply, just like we need to move electrons from a state of high voltage to a state of low voltage. If we could define a Ground BELOW 0 volts, then by definition all voltages would be higher regarding that point than they would be regarding the 0 volt point. The problem is simply to define a state of energy depleation so large as to suck energy into it... a black hole would suffice, but would also suck mass, and light, and other things.... Think black Ground for electricity.... [EG] Grey GRAEME SMITH email: grysmith@freenet.edmonton.ab.ca YMCA Edmonton Address has changed with little warning! (I moved across the hall! :) ) Email will remain constant... at least for now.