[extropy-chat] unidirectional thrust

[Mike Lorrey]

--- Dirk Bruere <dirk at neopax.com> wrote:
> Mike Lorrey wrote:
> 
> >The mass of an electron is incredibly small, no doubt, but the
> >velocities we are talking about are very significant. This likely
> will
> >not get us high fraction of 1 g accelerations by any stretch of the
> >imagination but it will give us, IMHO, a way to dump a lot of energy
> >into propulsion without wasting mass. (and no, Dirk, doing so is not
> >over unity if the work done is less than the amount of energy put
> in,
> >please go back and read your physics textbooks). Once stable long
> term
> >  
> >
> It's you who should do more reading.
> In space with no universal reference frame a constant energy input 
> translating to constant acceleration can produce arbitrarily large 
> amounts of energy.
> It is only with respect to a fixed reference frame that energy is 
> conserved - in which case SR and GTR are history.

I believe scirer posted a link showing that Einstein was off.

Mike Lorrey
Vice-Chair, 2nd District, Libertarian Party of NH
"Necessity is the plea for every infringement of human freedom.
It is the argument of tyrants; it is the creed of slaves."
                                      -William Pitt (1759-1806) 
Blog: http://intlib.blogspot.com

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