Hi Scott, I still don't think you can derive directional thrust in our inertial frame but your point regarding motion is appropriate relative to how we define time and motion when describing relative effects between different inertial frames. What we describe as time dilation from our perspective outside a cavity is perceived as spatial motion from the local perspective of the remote object inside the cavity such that the as plates move closer together from our external perspective they have an opposing motion from an internal perspective that starts to add distance at the inverse of distance^4 - It is a very real motion to the vac wavelengths [virtual particles] allowing them to fit in a space that appears too small from our perspective outside the cavity. You may be able to create imbalances inside the cavity but I remain convinced the overall "pressure" remains balanced externally and internally and you need to involve a 3rd body such as gas atoms that have a natural affinity for one region over the other in order to create an exploitable asymmetry.
My premise is that as long as the cavities taper smoothly into fissures and capillaries of sub atomic geometry the fractional gas can become further fractionalized and migrate into these relativistic confines as long as it remains in the center of the field and does not approach the cavity walls - If it slips out of the field it should rapidly translate through the fractionalized states and be rapidly squeezed out of the cavity by the confining walls. The confusion is that the Casimir plates modify both inertial frames- segregating energy density differently inside vs outside the cavity between as mentioned by Zofia Bialynicka-Birula in her paper Cavity QED http://th-www.if.uj.edu.pl/acta/vol27/pdf/v27p2409.pdf. This abrupt breach in isotropy is unlike any other macro phenomenon in nature. She also makes a point similar to yours regarding radioactive decays but based instead on spontaneous emission of Yb atoms in a mirror resonator being either enhanced or inhibited dependent on conditions. Regards Fran From: Wm. Scott Smith [mailto:scott...@hotmail.com] Sent: Tuesday, September 06, 2011 12:34 AM To: vortex-l@eskimo.com; Roarty, Francis X; Fran Roarty Subject: EXTERNAL: Time-Frame-Based Casimir Effect Fran, I think this is part of the difference between cavities that exhibit "negative" internal pressure or "positive" internal pressure. If we start by assuming that Lorentz Invariance applies to nanocavities then, at first, we expect the same pressure inside the cavity as outside the cavity, except for one little detail: Casimir Plates actually move! How can this be? Clearly, if we are correct, the pressure actually is the same in each time frame, but faster time means more instances of impulse as counted from a slower time frame; this gives us a positive pressure cavity. If time passes slower inside the cavity, then we have a "negative pressure" cavity. In other words, the time change is what is actually causing the Casimir Effect. Therefore, a cavity with a U-shaped cross section of the right materials, size and proportions can probably be designed so as to experience equal forces on its ceiling as on its roof, but at different rates of time. Therefore, a properly designed cavity will experience a net force. What do you think? Scott,