Re: Eidetic Anti Matter

Nigel Jacob (
Mon, 21 Jul 1997 13:10:29 -0400 (EDT)

On Sun, 20 Jul 1997, Dan Clemmensen wrote:

> Unless you find some new laws of physics, your will use the energy
> to power a reaction drive, sending photons in one direction and
> your ship in the other. You will not exceed the speed of light.
> Therefore, you cannot reach Pluto in less than 39 hours (as I recall.)
> If you intend to use the energy to accelerate to .5c and then
> decelerate,
> your matter-antimatter drive will need to to use twice the mass of
> the ship. That's a lot of antimatter. Production of that amount
> of antimatter will take several orders of magnitude more energy than
> the human race has generated in all of history.
> Conclusion: find some new laws of physics.

In fact, an anit-matter drive employing equal amounts of reactable
matter and antimatter is not as efficient as some related alternatives.
The magnitude of the radiated (non-usable) EM flux would mean lots of
shielding, thus incurring payload/fuel ratio name just just
one basic inefficiency of such a drive system. A far more efficient and
more technically feasible drive would employ a small amount of anitmatter
with a larger amount of thrust material, such as water. The generated
thrust of such a drive is very high and the associated payload/fuel ratio
is also correspondingly high.