Can you get a high enough E-Field/Energy Density to effect enough Polarized Vacuum to create a "Spacebubble"?
Cylindrical Capacitor Equations: http://hyperphysics.phy-astr.gsu.edu/hbase/electric/capcyl.html Spherical Capacitor and Isolated Sphere Capacitance Equations: http://hyperphysics.phy-astr.gsu.edu/hbase/electric/capsph.html For example an isolated 2.0 meter diameter Van de Graaff sphere (R = 1.0 meter) has a capacitance C = 4(pi)eoR = 4*3.14159*8.85E-12*1.0 = 1.112E-10 farads. If it has 3.0 million volts on it (3.0 million volts per meter is the corona onset point [the breakdown point of air at sea level pressure-temperature]) the charge Q = C*V = 1.112E-10 farad* 3E6 volts = 3.336E-4 Coulombs. Since the fundamental unit of charge (plus or minus) = 1.6E-19 Coulombs, dividing Sphere Charge Q by 1.6E-19 = 3.336E-4/1.6E-19 = 2.08E15 electrons spread over the 2.0 meter diameter sphere surface of 4(pi)R^2 meters or 4*3.14159* 1.0^2 = 1.659E14 electrons per square meter. The same exercise can be applied to a wire of a given diameter and length to see where the corona point in air sets in (76 Kilovolts/Inch radius or 3.0 Megavolts/meter radius) and the corresponding surface electron density. Vacuum Breakdown Info: http://w4.lns.cornell.edu/public/CESR/SRF/dissertations/werner/werner.html Fred
