Yes, he can determine that he has changed velocity by looking outside the ship at other objects. That is why I proposed the recent posting where he returns to the original location and velocity. That procedure counters the thought that a final velocity change can obscure any problems due to usage of the reactionless drive. Special Relativity is generally considered capable of countering the natural feeling that a particular velocity is important in space, but with zero velocity change there is no need to play that card.
The guy must reconcile where the mass of his ship has gone after using the reactionless drive. Dave -----Original Message----- From: Bob Cook <frobertc...@hotmail.com> To: vortex-l <vortex-l@eskimo.com> Sent: Mon, Nov 24, 2014 10:38 am Subject: Re: [Vo]:They call me a moron. A reply. David-- You stated: <<<After the drive is shut down the ship stops accelerating and comes to rest in space. Even though the new velocity is different than the old one before the drive operates, a guy onboard the ship can not determine that he is moving. >>> Yes he can determine he is moving. All he needs to do is look out the window and see that he is moving relative to objects that were fixed before he started his travel and are assumed to have remained fixed. Bob ----- Original Message ----- From: David Roberson To: vortex-l@eskimo.com Sent: Sunday, November 23, 2014 9:21 PM Subject: Re: [Vo]:They call me a moron. A reply. The fact that energy can be extracted from the battery to drive the microwave source is certainly possible. No one will ague against that point. The problem is that this energy can be depleted without having anything to show for its loss. If taken to the extreme most of the ship can be converted into energy by some nuclear process to supply power for the drive mechanism. After the drive is shut down the ship stops accelerating and comes to rest in space. Even though the new velocity is different than the old one before the drive operates, a guy onboard the ship can not determine that he is moving. He will not have any kinetic energy relative to himself. He sees that his ships mass has depleted but has nothing to show where it went. With a normal drive the guy can see the exhaust that is moving relative to him which contains all of the converted energy. Dave -----Original Message----- From: Eric Walker <eric.wal...@gmail.com> To: vortex-l <vortex-l@eskimo.com> Sent: Mon, Nov 24, 2014 12:02 am Subject: Re: [Vo]:They call me a moron. A reply. On Sun, Nov 23, 2014 at 8:26 PM, David Roberson <dlrober...@aol.com> wrote: I encourage anyone out there with knowledge about how to overcome the obvious problems to offer their input. One thought here -- the "reactionless drive" that I am aware of being in the recent news is the EmDrive. That one involves the generation of microwaves and their reflection in a cavity. It's not clear whether anyone other than Nasa and the inventor believe that it works as advertised. But if it does, note that energy must be expended to generate the microwaves, e.g., by a battery, to which the usual E=mc^2 conversion will apply. Eric
