Re: Re: RE: [FT] Strange Forces

On Wed, Feb 13, 2002 at 06:53:41PM -0500, Laserlight wrote:
>There was an article in Analog which discussed this,
>probably somewhere 1980 and 1990.  The author said that you could
>couple a positive and negative mass and get something which constantly
>accelerated with no energy input and, since half the mass is negative,
>it doesn't violate conservation of mass-energy.
>[snip]
>I can't unfortunately, recall who the author is and it's not in one of
>the dozen or so Analogs I keep handy.

Robert L. Forward wrote a book (_Timemaster_) on this premise. If one
ignores the attempts at characterisation, it's quite fun.