Perhaps "when" did the mass go answers the question better to explain the spatial imbalance.
-----Original Message----- From: mix...@bigpond.com [mailto:mix...@bigpond.com] Sent: Monday, March 14, 2016 5:15 PM To: vortex-l@eskimo.com Subject: EXTERNAL: Re: [Vo]:Re: EM Drive(s) In reply to David Roberson's message of Mon, 14 Mar 2016 14:44:33 -0400: Hi, [snip] >From the EM drive's point of view the CoE must be violated because as it >accelerates in space a portion of it's mass must be converted into energy that >is used to power the drive. When it ceases to use the drive it begins to >remain motionless in space from its point of view. Where did that mass go >which was converted into energy that powered the drive? Did it simply vanish? When a electric car drives down the road, where does the expended energy show up in the reference frame of the car? Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html