Spudboy100@aol.com wrote:
>
> In a message dated 03/17/2000 10:56:13 PM Eastern Standard Time,
> spike66@ibm.net writes:
>
> > I estimated that my truck's 12 volt 100 amp-hour battery
> > has a mass of about 25 kg. Fully charged to fully discharged
> > the whole outfit would gain on the order of half a millimeter
> > per second. Not the most efficient way to pick up some
> > delta vee. spike
> I wonder what the effective jet velocity would be for something like
> gamma-ray photons? Also is there the feature of photonic density-can ya pack
> enough energetic photons inside a hydrogen atom's diameter?
No, the energy of the individual photons doesn't matter- the momentum of
a photon is directly proportional to its energy, so a gigawatt of gammas
produces the same thruat as a gigawatt of reds (about 3.3 newtons). The
gammas are a lot harder to make, though.
-- Doug Jones Rocket Plumber, XCOR Aerospace http://www.xcor-aerospace.com
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